Kev Tshawb Fawb Kev Txhim Kho Ntawm Cov Khoom Siv Ua Haujlwm Tshiab Txhuas Ua Npuas Ncauj

1. Taw qhia

Foamed aluminium yog hom tshiab ntawm cov khoom siv, uas yog cov khoom siv ua npuas dej zoo li cov khoom siv hlau ultra-lub teeb nrog ntau cov npuas tawg hauv cov hlau txhuas matrix, thiab cov porosity dav dav yog 40 feem pua ​​~ 98 feem pua. Xyoo 1948, Sonik tau npaj ib txoj hauv kev los npaj foamed aluminium los ntawm vaporizing thiab foaming mercury hauv txhuas, thiab tom qab ntawd Elliot tau ua tiav kev npaj foamed aluminium hauv xyoo 1951. Nyob rau xyoo 1960, American Ethyl Company tau los ua qhov chaw tshawb fawb tshawb fawb hauv paus rau kev txhim kho aluminium npuas. Xyoo 1991, Nyiv lub koom haum Kyushu ntawm Industrial Metals tau tsim txoj hauv kev rau kev lag luam ntawm foamed aluminium, thiab tam sim no loj thiab me me tuaj yeem tsim los ntawm cov hlau foaming thiab percolation txoj kev. Txog niaj hnub no, Tebchaws Meskas, Nyiv, Tebchaws Askiv, Fabkis, Canada thiab lwm lub tebchaws tau ua tiav ntau yam kev patents. Hauv kuv lub tebchaws, qee qhov kev tshawb nrhiav haujlwm kuj tau ua tiav ntawm cov kev tshawb fawb hauv paus ntawm kev npaj cov txheej txheem ntawm foamed aluminium, thiab qee qhov kev ua tiav tau ua tiav.

Aluminium ua npuas ncauj muaj ntau yam zoo heev vim nws cov qauv tshwj xeeb. Nws tsis tsuas yog muaj lub teeb yuag ntawm cov ntaub ntawv ntxeem tau, tab sis kuj muaj cov khoom siv zoo heev thiab thermal, hluav taws xob thiab lwm yam khoom siv lub cev uas cov hlau muaj, xws li nkag mus, damping, lub zog nqus, siab tshwj xeeb thaj chaw, electromagnetic shielding thiab lwm yam khoom. Tam sim no, cov ntawv thov tseem ceeb ntawm foamed aluminium yog: fireproof thiab sound-absorbing panels, cuam tshuam lub zog nqus cov ntaub ntawv, lub tsev vaj huam sib luag, semiconductor gas diffusion daim hlau, tshav kub exchangers, electromagnetic shielding thiab hais txog. Nws tuaj yeem siv rau hauv kev lag luam metallurgy, tshuaj lom neeg kev lag luam, aerospace, shipbuilding, electronics, tsheb tsim thiab kev tsim kho, thiab cov Scope ntawm daim ntawv thov yog tas li nthuav.

2. Txoj kev npaj ntawm txhuas ua npuas ncauj

2.1 Casting method

Cov txheej txheem casting yog siv dav hauv kev tsim cov foamed aluminium, thiab cov txheej txheem kev npaj yog tus paub tab. Muaj ob peb txoj hauv kev muaj feem xyuam nrog hauv qab no.

2.1.1 Seepage casting method

Txoj kev percolation casting yog infiltrate high-temperature kua hlau aluminium rau hauv qhov khoob ntawm qhov muab tub lim nyob rau hauv ib lub siab, thiab tshem tawm cov soluble particles nyob rau hauv lub aluminium alloy tom qab solidification, uas yog, kom tau foamed txhuas nrog ib tug txuas cell qauv. . Txoj kev no tuaj yeem muab faib ntxiv rau hauv siab infiltration casting txoj kev thiab tsis zoo siab infiltration casting txoj kev. Lub siab sulphurizing casting txoj kev yog cov khoom siv hluav taws xob nrog lub zog, kev ua haujlwm siab, kev hloov pauv kub zoo heev thiab nkag mus rau qhov tsis zoo ntawm qhov tsis zoo siab infiltration casting txoj kev.

(3) Lub neej nruab nrab ntawm Al2O3 dispersion-strengthened tooj liab electrodes rau vuam 1.5 hli tuab aluminized steel daim hlau yog 7200 cov ntsiab lus, uas tuaj yeem ua tau raws li qhov xav tau ntawm CPT tawg-pov thawj txoj siv vuam.

Nws muaj qhov zoo ntawm cov txheej txheem ua haujlwm yooj yim, ceev preheating ceev, siab tsim tau thiab tawm los, loj kev nyab xeeb yam, cov cuab yeej siv me me, thiab kev siv tshuab yooj yim. Ntawm lawv, kev xaiv thiab kev ua ntawm cov khoom muab tub lim yog qhov tseem ceeb heev, uas muaj cov yam ntxwv hauv qab no: txaus tshav kub tsis kam, tsis yaj ntawm qhov kub thiab txias; txaus lub zog thiab nruj, tsis tawg thiab deformed nyob rau hauv qhov kev txiav txim ntawm seepage siab; Kev tshem tawm zoo Cov khoom muab tub lim nyob rau hauv peb-dimensional pores tuaj yeem raug tshem tawm tag nrho nrog cov kuab tshuaj los yog cov kua dej aqueous tom qab cov kua txhuas solidifies; tshuaj stability, tsis hnov ​​​​mob nrog cov kua txhuas. Txoj kev no yooj yim rau kev khiav lag luam, thiab qhov nruab nrab porosity tuaj yeem ncav cuag 70 feem pua, uas yooj yim rau kev tsim khoom loj. Tam sim no, txoj kev percolation tsis yog tsuas yog siv hauv kev tsim cov txhuas ua npuas ncauj, tab sis kuj tseem tsim cov ntaub ntawv ua npuas ncauj xws li zinc, magnesium, txhuas, tin, thiab hlau, uas tuaj yeem siv los tsim cov khoom nrog cov duab nyuaj.

2.1.2 Ntxiv cov txheej txheem pob

Cov txheej txheem pob ntxiv yog ntxiv cov khoom los yog cov hollow spheres rau cov kua aluminium alloy, ntxiv dag zog rau kev nplawm, thiab nrum cov kua txhuas uas tseem nyob hauv cov txheeb ze txaus kom tau txais ib qho txhuas alloy thiab cov khoom sib xyaw, thiab tom qab ntawd yaj thiab tshem tawm cov aluminium alloy matrix. . Soluble hais, thiab ib qho kev sib txuas-cell aluminium ua npuas ncauj tau txais.

2.1.3 Kev nqis peev casting txoj kev

Ua ntej, peb-dimensional nruam ua npuas ncauj daim txhuam cev cov khoom siv nrog qee qhov porosity yog siv los ua cov khoom siv niam txiv, thiab tom qab ntawd cov khoom siv refractory yooj yim yog flushed rau hauv daim txhuam cev zoo li ua npuas ncauj, qhuav thiab hardened los ua ib lub prefabricated zoo, thiab Tom qab ntawd raug rho tawm haujlwm los ua kom cov khoom siv refractory thiab ua rau nws Cov npuas dej ua npuas dej yog vaporized thiab decomposed, thiab tom qab ntawd lub preform yog muab tso rau hauv ib lub pwm hlau, ncuav rau hauv cov hlau molten, thiab ib qho kev siab yog siv rau nws los yog lub tshuab nqus tsev casting yog ua los ntawm cov pwm. pores ntawm pwm nrog molten hlau, thiab nws raug tshem tawm tom qab txias. Qhov thaiv ntawm cov khoom siv refractory tuaj yeem tau txais peb-dimensional network los ntawm-cell aluminium ua npuas ncauj. Cov txhuas ua npuas dej ua los ntawm cov txheej txheem kev npaj peev txheej no muaj kev nkag mus rau peb-dimensional zoo, thiab cov txheej txheem muaj ntau yam kev siv thiab tsis-corrosive, thiab muaj kev cia siab zoo hauv kev tsim cov khoom siv dej-permeable.

2.1.4 Foaming method

Muaj ob hom roj foaming txoj kev thiab hlau ua kua foaming txoj kev. Cov pa roj foaming txoj kev yog tshuab roj rau hauv cov hlau molten yaj kom ua npuas cov hlau yaj. Cov roj siv rau foaming tuaj yeem yog cov pa oxygen, argon, cua, dej vapor, carbon dioxide, thiab lwm yam. Cov txheej txheem tseem ceeb yog tias cov yaj yuav tsum muaj qhov tsim nyog viscosity, cov hlau muaj pes tsawg leeg yuav tsum ua kom muaj qhov dav txaus foaming qhov kub thiab txias. ua npuas ncauj yuav tsum muaj kev ruaj ntseg txaus los xyuas kom meej tias cov npuas dej tsis tawg thaum lub sij hawm tom qab sau thiab molding txheej txheem. Cov pa roj foaming txoj kev tam sim no yog txoj kev pheej yig tshaj plaws los tsim cov hlau ua npuas ncauj. Qhov loj ntawm cov npuas dej yog qhov loj heev, thiab qhov porosity ntawm foamed aluminium khoom tuaj yeem ncav cuag 97 feem pua. Cov txheej txheem ua kua hlau foaming tau dav siv nyob rau hauv cov hnub thaum ntxov, feem ntau ntxiv TiH2, ZrH2, CaH2 thiab lwm yam foaming agents rau cov kua txhuas alloy, thiab tom qab ntawd cua sov kom decompose tus neeg sawv cev foaming tso tawm cov pa, thiab nthuav cov roj ua. cov aluminium alloy rau hauv ib lub npuas dej, thiab tom qab ntawd txias Qhov ntawd yog, foamed aluminium khoom yog tau. Lub txhuas ua npuas ncauj npaj los ntawm txoj kev no belongs rau kaw-cell aluminium ua npuas ncauj. Cov qauv thiab cov porosity ntawm cov pores muaj feem xyuam rau cov viscosity ntawm cov hlau molten thiab lub sij hawm foaming. Kev tswj cov viscosity ntawm cov hlau molten thiab lub sij hawm foaming thaum lub sij hawm melting yuav tswj cov porosity. Txawm li cas los xij, cov pores yog ywj siab ntawm ib leeg, lawv qhov loj thiab kev faib tawm tsis sib xws, thiab kev tswj xyuas nyuaj.

2.1.5 Eutectic solidification txoj kev

Cov pa roj muaj qee yam solubility hauv cov hlau molten, thiab nws nce nrog qhov nce siab thiab kub. Thaum lub solubility ntawm cov roj nyob rau hauv cov hlau mus txog ib tug predetermined tus nqi, cov hlau thiab cov roj theem nyob rau hauv lub eutectic solidification kom tau raws li qhov xav tau ntawm txhuas ua npuas ncauj. , los ntawm kev tswj xyuas qhov txias txias (siab, txias npaum li cas, cov cua kub dissipation kev taw qhia), isotropic thiab anisotropic high-porosity aluminium foams nrog ntau qhov pore duab tuaj yeem tau txais [18].

2.2 Deposition method

2.2.1 Sputter deposition method

Sputter deposition txoj kev yog siv lub tshuab sputtering kom uniformly txau cov hmoov nrog inert roj ntawm lub txhuas alloy hlau, thiab cua sov nws mus rau lub melting point ntawm hlau, thiaj li hais tias cov roj ntxiv nyob rau hauv cov hlau matrix expands mus rau hauv lub qhov, thiab tom qab ntawd. txias, nws yog ib tug foamed txhuas nrog ib tug foamed qauv yog tau. Lub pore ntim feem ntawm cov khoom tau txais los ntawm txoj kev no tuaj yeem tswj tau los ntawm kev tswj xyuas ib feem ntawm cov roj inert nyob rau hauv cov deposition, thiab qhov loj feem ntawm cov inclusion gas tuaj yeem sib txawv ntawm {{0} }.015 feem pua ​​​​rau 0.23 feem pua ​​.

2.2.2 Vapor Evaporation Deposition

Nyob rau hauv ib qho kev kub siab inert huab cua (102 ~ 103Pa), hlau txhuas yog maj mam evaporated, thiab cov evaporated hlau atoms raug ib tug series ntawm kev sib tsoo thiab tawg nrog cov inert gas nyob rau hauv tus txheej txheem ntawm kev nce qib, thiab sai sai poob. Lub zog kinetic, yog li ib nrab condensing los ua cov pa luam yeeb hlau, cov fume hlau yog tso rau hauv qhov kev txiav txim ntawm nws tus kheej lub ntiajteb txawj nqus thiab nqa los ntawm cov pa roj inert, thiab txuas ntxiv txias thaum lub sij hawm downward txheej txheem, thiab thaum kawg mus txog lub hauv paus. Vim nws qhov kub thiab txias, nws yog ib qho nyuaj rau cov atoms migrate los yog diffuse, yog li cov hlau fume hais tsuas yog loosely piled mus rau hauv cellular ua npuas ncauj qauv. Cov txhuas ua npuas dej ua los ntawm cov txheej txheem no txawv ntawm cov foamed aluminium nrog cov qauv macroscopic. Nws yog tsim los ntawm ib tug loj tus naj npawb ntawm sub-micron-scale hlau hais thiab micropores, thiab nws qhov ntom yog li ntawm 1 feem pua ​​​​ntawm qhov ntom ntawm niam txiv hlau aluminium, thiab qhov tsawg kawg nkaus yog 0.15 feem pua.

2.2.3 Electrodeposition

Txoj kev no yog los npog cov yas foamed nrog ntau cov kauj ruam xws li roughening kev kho mob, rhiab heev thiab ua kom cov kev kho mob, tshuaj pre-plating thiab tshuaj plating, thiab lwm yam., thiab ces sov lub foamed yas decompose kom tau foamed txhuas. Ntawm lawv, ob txheej txheem ntawm rhiab heev thiab ua kom muaj kev kho mob ua lub luag haujlwm tseem ceeb heev. Kev kho mob rhiab heev yog ua kom lub ntsej muag ntawm qhov roughened ib feem adsorb qhov txo ions, yog li ntawd thaum lub sij hawm kev kho mob ion activation, qhov saum npoo ntawm ib feem tsim ib txheej nrog catalytic zog. Lub luag hauj lwm ntawm cov txheej txheem hlau tseem ceeb, kom cov electroless plating tuaj yeem ua tiav, kom cov npuas ua ib qho semiconductor, uas nyob rau hauv lem txhawb txoj kev vam meej ntawm electroplating aluminium. Cov txhuas ua npuas ncauj npaj los ntawm txoj kev no muaj qhov sib txuas zoo pore, kev faib tawm tsis sib xws, thiab cov porosity loj, tab sis cov khoom tuab yog txwv thiab tus nqi siab.

2.2.4 Molten ntsev Electroplating Aluminium

Molten ntsev electroplating aluminium yog ib hom ntxeem tau ntawm txhuas ua npuas ncauj ua los ntawm cov txheej txheem electrodeposition nyob rau hauv molten ntsev uas muaj txhuas ntsev, nrog ua npuas ncauj yas li electrode cathode thiab txhuas phaj li anode. Aluminium ua npuas ncauj ua los ntawm txoj kev no muaj siab porosity thiab uniform pores.

2.3 Hmoov metallurgy

2.3.1 Powder foaming method

Cov hmoov foaming txoj kev yog sib tov txhuas hmoov nrog ib tug foaming agent (TiH2), thiab axially compress nws ntawm ib tug tej yam kub kom tau ib tug preform nrog ib tug airtight qauv. Ib txoj hauv kev nthuav dav cov khoom kom tau txais foamed aluminium. Sib tov, nias thiab foaming yog peb qhov tseem ceeb txuas hauv cov hmoov foaming txoj kev. Nyob rau tib lub sijhawm, los ntawm kev kho qhov tsis sib xws hauv cov txheej txheem foaming (tus nqi ntawm tus neeg sawv cev foaming, foaming kub, thiab lub sijhawm foaming), foamed aluminium nrog cov qauv ntawm tes sib txawv tuaj yeem tau txais.

2.3.2 Slurry forming method

Txoj kev slurry molding yog tsim los ntawm kev ncua ntawm cov hlau txhuas hmoov, foaming tus neeg sawv cev (hydrofluoric acid, aluminium hydroxide los yog orthophosphoric acid) thiab organic carrier, do nws mus rau hauv lub xeev uas muaj npuas dej, thiab ces muab tso rau hauv pwm thiab kub nws tom qab calcination. , khoom hlau aluminium nrog cov qauv ntxeem tau tuaj yeem tau. Txoj kev no tau pib siv los ua foamed Be, Fe, Cu, thiab stainless hlau cov ntaub ntawv, thiab tom qab ntawd los tsim foamed aluminium. Tab sis cov khoom muaj zog yog tsawg heev.

2.3.3 hmoov molding txoj kev

Cov hmoov molding txoj kev yog ib txoj kev sib tov hlau txhuas hmoov nrog ib tug foaming neeg sawv cev (TiH2), ua los ntawm txias los yog kub siab, thiab ces sintering nws mus rau hauv foamed txhuas. Nws muaj ob qho txiaj ntsig tseem ceeb: ib qho yog tias nws tuaj yeem siv rau ntau qhov sib txawv ntawm cov hlau alloy ntau dua li lwm txoj hauv kev, yog li tswj cov khoom siv ntawm aluminium npuas; Sandwich-shaped aluminium ua npuas ncauj, thiab txhuas ua npuas ncauj-filled turbine lug

2.3.4 Loose hmoov sintering txoj kev

Lub hauv paus ntsiab lus ntawm txoj kev xoob hmoov sintering yog tias thaum cov khoom zoo nyob rau hauv kev sib cuag nrog ib leeg, lawv tuaj yeem txuas rau ib leeg los ntawm kev ua ntawm qhov nro. Cov hmoov txhuas zoo no tau muab tso rau hauv pwm rau sintering, thiab cov khoom sib txuas ua ke los ua ib lub cev ntxeem tau sintered. Txoj kev no tseem tuaj yeem siv los tsim cov lim dej nrog porosity feem ntau 40 feem pua ​​​​rau 60 feem pua.

2.3.5 Impregnation daim txhuam cev sintering txoj kev

Hauv cov hmoov hlau metallurgy, cov khoom siv spongy tuaj yeem siv los ua cov qauv kev txhawb nqa ib ntus los tsim kom muaj cov porosity siab, niaj hnub aluminium foams. Cov spongy organic teeb meem raug txiav rau hauv cov duab uas xav tau thiab tom qab ntawd nkag mus nrog cov slurry uas muaj cov hmoov txhuas hlau ua tiav (cov cab kuj ntawm kev ncua yog dej thiab cov kua organic). Lub immersed sponge zoo li cov organic teeb meem yog qhuav kom tshem tawm cov flux, thiab tom qab txias, lub foamed hlau aluminium nrog ib tug siab porosity peb-seem qauv yuav tau. Cov txheej txheem kuj tseem siv los tsim cov ntawv nyiaj foamed nrog porosity ntawm 70 feem pua ​​​​rau 90 feem pua.

2.3.6 Fiber sintering txoj kev

Cov hlau txhuas hlau siv nyob rau hauv txoj kev no yog cov hlau hlau uas tau txais los ntawm cov khoom siv kos duab lossis lwm txoj hauv kev. Cov hlau txhuas hlau yog tsim los rau hauv ib lub nplhaib zoo nkauj los ntawm plam casting lossis mechanical xav nplhaib txoj kev, thiab tom qab ntawd sintered kom ua tiav lub zog xav tau. thiab porosity. Qhov ntxeem tau ntawm txhuas ua npuas ncauj npaj los ntawm txoj kev no muaj qhov zoo heev: porosity ntau dua li cov hmoov sintering tuaj yeem tau txais, txog li 95 feem pua; tag nrho cov pores yog interconnected pores; qhov siab tshaj plaws porosity tseem khaws cia. Cov yam ntxwv zoo; nyob rau tib lub porosity, lub zog thiab toughness yog ob peb zaug siab dua cov hmoov metallurgy. Nws tseem tuaj yeem siv los tsim ntau yam hlau lim, xws li stainless hlau, tooj liab, npib tsib xee, nichrome, thiab lwm yam.

2.3.7 Sintering dissolution method

Txoj kev sintering dissolution yog ib txoj kev tshiab rau kev tsim foamed aluminium tsim nyob rau hauv xyoo tas los no. Nws yog ib txoj hauv kev npaj los ntawm cov xov tooj ntawm tes ua npuas ncauj los ntawm kev sib tov, nias, sintering thiab dissolving txhuas hmoov thiab muab tub lim. Nws muaj cov yam ntxwv uas cov duab, qhov loj me, qhov porosity thiab kev faib tawm ntawm qhov pores tuaj yeem tswj tau qhov tseeb, thiab nws muaj cov txiaj ntsig zoo ntawm qhov zoo thiab tus nqi. Nws yog ib txoj hauv kev zoo los tsim cov khoom nruab nrab-ntom ntom nti ua npuas nrog cov khaub ncaws tsis zoo lossis gradiorm lossis gradiorm lossis gradient nplua.

3. Cov khoom thiab kev siv ntawm txhuas ua npuas ncauj

Raws li cov qauv, txhuas ua npuas ncauj tuaj yeem muab faib ua ob hom: kaw-cell aluminium ua npuas ncauj thiab qhib-cell aluminium ua npuas ncauj. Lub koom haum thiab morphological yam ntxwv ntawm txhuas ua npuas ncauj, nrog rau cov qauv ntawm pores (qhib los yog kaw), txheeb ze ntom ntom, pore loj, pore zoo, pore phab ntsa thickness, anisotropy, thiab lwm yam. Electron microscopy thiab X-ray tomography yog siv rau kev soj ntsuam thiab kev tshawb fawb. , thiab kev tshawb fawb hauv cheeb tsam no tab tom txhim kho sai. Vim muaj cov qauv sib txawv, nws cov khoom sib txawv heev, yog li nws muaj kev siv sib txawv. Piv nrog cov tsoos hlau txhuas, foamed aluminium muaj cov yam ntxwv hauv qab no thiab tau siv dav hauv metallurgy, tshuaj lom neeg kev lag luam, aerospace, shipbuilding, electronics, tsheb tsim thiab kev tsim kho kev lag luam. thiab lwm yam teb tau dav siv.

3.1 Tsawg ceev

Vim tias txhuas ua npuas ncauj muaj qhov loj thiab me me nyob rau hauv aluminium matrix, nws muaj qhov ntom me me. Qhov ntom ntawm aluminium npuas tuaj yeem sib txawv ntawm ntau yam, thiab qhov porosity siab tshaj plaws uas tuaj yeem tau txais tam sim no tuaj yeem ncav cuag 97 feem pua, thiab nws qhov pore loj nyob ntawm ntau micrometers mus rau kaum millimeters. Qhov qis dua qhov ntom. Nws tuaj yeem siv rau hauv cov thawv ntim khoom, tshwj xeeb tshaj yog cov thawv ntim khoom thauj.

3.2 Muaj zog ua kom sov

Foamed aluminium muaj qhov kub tsis kam, thiab nws yuav tsis yaj txawm tias nws mus txog qhov melting point ntawm alloy. Feem ntau, lub melting kub ntawm aluminium alloys nyob ntawm 560 mus rau 700 e, tab sis cov foamed aluminium tsis yaj txawm tias thaum rhuab mus rau 1400 degree. Tsis tas li ntawd, nws tsis tso cov pa phem ntawm qhov kub thiab txias, thiab tuaj yeem hloov cov khoom siv foamed thiab asbestos raws li cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob thiab cov khoom tseem ceeb ntawm ntau yam khoom siv hluav taws xob hauv ntau lub sijhawm.

3.3 Zoo permeability

Aluminium ua npuas ncauj tuaj yeem siv los ua cov khoom siv lim dej los lim tawm cov khoom ntawm cov kua lossis roj. Feem ntau, qhov permeability nce nrog qhov nce ntawm qhov pore loj, tab sis nws tseem cuam tshuam los ntawm qhov chaw roughness. permeability. Nws tuaj yeem siv los ua cov lim dej rau ntau yam kua thiab roj.

3.4 Loj qhov chaw tshwj xeeb

Siv qhov loj tshwj xeeb ntawm thaj chaw ntawm aluminium ua npuas ncauj kom ua tiav cov khoom siv hluav taws xob siab, nws yog cov khoom siv zoo rau kev ua cov cua sov thiab cov khoom siv hluav taws xob. Tsis tas li ntawd, nws tseem tuaj yeem siv los ua tus cab kuj rau cov tshuaj tiv thaiv uas yuav tsum tau muaj qhov loj me, xws li cov cab kuj catalyst. , ntxeem tau electrodes, phaj cov ntaub ntawv rau rechargeable roj teeb, tshav kub exchangers, lub zog absorbers thiab catalyst cab kuj, thiab lwm yam.

3.5 Muaj zog suab rwb thaiv tsev

Aluminium ua npuas ncauj tuaj yeem nqus tau lub zog ntawm lub suab los ntawm kev co ntawm lub qhov phab ntsa, thiab tuaj yeem siv los muffle thiab tshem tawm suab nrov. Feem ntau hais lus, lub suab nqus kev ua tau zoo ntawm lub xov tooj ntawm tes aluminium ua npuas ncauj zoo dua. Qhov loj ntawm lub qhov cuam tshuam rau nws qhov kev ua tau zoo rau tag nrho lub suab nthwv dej ntau zaus. Qhov me me ntawm lub qhov, qhov muaj peev xwm nqus suab ntau dua.

Kev ua tau zoo ntawm lub suab nrov tuaj yeem tau txais los ntawm kev hloov qhov loj thiab cov duab ntawm aluminium npuas pores. Nws tuaj yeem siv rau sab hauv thiab sab nrauv kho kom zoo nkauj qhov chaw, kab hlau rhuav phab ntsa, muab faib cov qhov rooj qhov rooj hauv kev tsim kho, tsim cov suab nrov-absorbing panels, suab-insulating phab ntsa, ntau yam mufflers, thiab lwm yam.

3.6 Muaj kev ua haujlwm siab ntawm absorbing cuam tshuam lub zog

Foamed aluminium tsis yog kev taw qhia zoo li cov ntaub ntawv honeycomb, thiab nws tsis muaj qhov cuam tshuam zoo li cov ntaub ntawv polymer ua npuas ncauj. Nws muaj cov khoom zoo ntawm kev poob siab thiab yog cov khoom siv zoo rau kev cuam tshuam-tiv taus qhov chaw. Nws tuaj yeem siv rau hauv tsheb nres tsheb, tensioners, thiab lub tes tsho tiv thaiv thiab bumpers hauv cov khoom siv dav hlau. Qhov loj ntawm nws qhov damping yog cuam tshuam nrog qhov loj ntawm qhov pore loj ntawm qhov pores. Nws tuaj yeem siv rau kev nyab xeeb ntawm lub elevator thiab conveyors, kev poob siab thiab lub zog nqus cov ntaub ntawv rau kev kub ceev grinder guards, hauv paus rau high-precision tshuab cuab yeej, thiab lwm yam.

3.7 Mechanical Properties

Txhua yam khoom ntawm txhuas ua npuas ncauj yog tsuas yog txiav txim siab los ntawm nws qhov ntom, tab sis qhov loj, qauv thiab kev faib tawm ntawm qhov pores kuj tseem ceeb rau kev txiav txim siab cov khoom siv kho tshuab. Nyob rau hauv qhov kev txiav txim ntawm compressive kev nyuaj siab, tom qab cov ntaub ntawv undergoes thawj elastic deformation, cov txhuas ua npuas ncauj nkag mus rau hauv cov kev nyuaj siab nkhaus platform, uas yog, cov txhuas ua npuas ncauj pib rupture, thiab cov kev nyuaj siab nyob rau hauv lub hauv paus tsis hloov thaum lub sij hawm ua npuas ncauj crushing theem. Tom qab ib tug loj npaum li cas ntawm cov yas deformation, cov npuas dej tau tawg tag, thiab cov khoom nkag mus rau hauv qhov ntom ntom Thaum lub sij hawm tshuaj lom neeg, qhov kev ntxhov siab nce sai heev. Ob leeg Young's modulus thiab shear modulus ntawm txhuas ua npuas ncauj nce nrog kev nce ceev.

3.8 Electromagnetic shielding kev ua tau zoo

Aluminium ua npuas ncauj muaj kev tiv thaiv zoo ntawm cov khoom siv hluav taws xob ntau zaus, uas tuaj yeem txo qhov cuam tshuam ntawm electromagnetic los ntawm ntau tshaj 80 feem pua. Kaw-cell aluminium ua npuas ncauj nrog lub thickness ntawm 5 hli thiab ib tug porosity ntawm 90 feem pua, lub electromagnetic shielding kev ua tau zoo ntawm 60 ~ 1000MHz yog 35 ~ 75dB, uas yuav siv tau nyob rau hauv electromagnetic shielding chav (npog), hluav taws xob ntsuas enclosures, xov tooj cua kaw lus, electromagnetic shielding thiab lwm zaus.

3.9 Lwm yam khoom

Aluminium ua npuas ncauj kuj muaj roj rhiab heev, hluav taws kub, catalysis, thiab lwm yam. Cov hluav taws xob conductivity ntawm foamed aluminium yog zoo heev cuam tshuam los ntawm tus txheeb ze ntom, thaum qhov luaj li cas ntawm lub pore loj muaj me ntsis cuam tshuam rau cov hluav taws xob conductivity. Nws xav tias yuav muaj kev cia siab zoo hauv cov haujlwm tshiab xws li aerospace, kev sib txuas lus thiab kev tiv thaiv ib puag ncig.