Metalized Alumina Cheebtsam Cov Khoom Siv: Cov Khoom Siv Tseem Ceeb ntawm Niaj Hnub Niaj Hnub Siv Tshuab

Niaj hnub no, lub zog, cov ntaub ntawv, thiab cov ntaub ntawv tau dhau los ua qhov tseem ceeb ntawm tib neeg kev vam meej niaj hnub no, nrog cov ntaub ntawv yog cov khoom siv tseem ceeb rau tib neeg txoj sia nyob thiab kev loj hlob. Tom qab cov hlau, ceramics, thiab polymers, Metalized Alumina Cheebtsam 'cermet cov ntaub ntawv tau nkag mus rau ntau yam kev lag luam vim lawv cov kev ua tau zoo, muaj ntau hom, thiab ntau yam kev siv. Cov ntaub ntawv Cermet muaj cov khoom zoo xws li lub zog tshwj xeeb, siab tshwj xeeb modulus, hnav tsis kam, thiab siab -kub tsis kam. Hauv ntau lub ntsiab lus, lawv tau dhau los ua cov ntaub ntawv tshiab, tsim cov khoom siv rau cov cuab yeej siv siab niaj hnub, kev lag luam tawm tshiab, thiab kev hloov pauv thev naus laus zis ntawm kev lag luam ib txwm muaj. Lawv kuj yog ib feem tseem ceeb ntawm kev tiv thaiv lub teb chaws niaj hnub no, nyiam cov neeg nyiam thoob ntiaj teb thiab raug lees paub tias yog thaj chaw tseem ceeb rau kev txhim kho thev naus laus zis siab -.

Ceramic metals yog cov khoom siv tsim los ntawm cov theem nyuaj ceramic thiab cov hlau los yog alloy binder theem. Lo lus Askiv "Cermets" muab "ceramic" thiab "hlau." Metallized Ceramic Cheebtsam khaws lub siab zog, siab hardness, hnav tsis kam, kub tsis kam, oxidation tsis kam, thiab tshuaj stability ntawm ceramics, thaum kuj muaj zoo metallic toughness thiab plasticity. Txij li thaum tsis muaj ib thaj tsam meej ntawm ob lo lus kev kawm "cermets" thiab "hard alloys," nws yog ib qho nyuaj rau kev txhais cov ciam teb rau cov ntaub ntawv tshwj xeeb. Raws li cov khoom muaj pes tsawg leeg, "hard alloys" kuj tau muab cais ua "cermets."

Cov yam ntxwv tseem ceeb ntawm cov hlau ceramics muaj xws li hauv qab no:

(1) Zoo wettability ntawm cov hlau mus rau theem ceramic. Lub wettability ntawm cov hlau thiab ceramic hais yog ib qho ntawm cov xwm txheej tseem ceeb rau kev soj ntsuam cov microstructure thiab kev ua haujlwm ntawm cermets. Qhov muaj zog ntawm cov wettability, qhov ntau dua qhov ua tau ntawm cov hlau ua ib ntus txuas ntxiv, thiab qhov ua tau zoo ntawm Brazed Hlau rau Ceramic Contactor.

(2) Tsis muaj tshuaj lom neeg ua phem ntawm theem hlau thiab theem ceramic. Yog hais tias cov tshuaj tiv thaiv interfacial ua nruj ua tsiv thaum Ceramic Metallization, tsim cov tebchaw, cov hlau theem tsis tuaj yeem siv los txhim kho cov ceramic tsis kam rau cov neeg kho tshuab poob siab thiab thermal shock.

(3) Qhov sib txawv ntawm expansion coefficients ntawm cov hlau thiab ceramic theem tsis loj heev. Thaum cov coefficients ntawm thermal expansion ntawm cov hlau theem thiab cov ceramic theem nyob rau hauv ib tug Metallized Ceramic yog ho txawv, nws yuav ua rau muaj kev nyuaj siab nyob rau hauv ntau dua thiab txo lub thermal stability ntawm lub cermet.

Txoj kev npaj tseem ceeb rau cov ntaub ntawv cermet muaj xws li kub nias, hmoov sintering, thiab impregnation. Cov txheej txheem tshwj xeeb yog raws li hauv qab no:

Kub nias:Hlau los yog alloy / ceramic raw cov ntaub ntawv yog finely pulverized, uniformly tov, zoo li tus, kub - nias, thiab ua tiav kom tau cov khoom tiav.

Hmoov sintering:Hlau los yog alloy / ceramic raw cov ntaub ntawv yog finely pulverized, uniformly tov, zoo li tus, qhuav, raug rho tawm mus rau hauv ib tug ntxeem tau lub moj khaum, sintered, thiab ua tiav kom tau cov khoom tiav.

Impregnation:Hlau los yog alloy / ceramic raw cov ntaub ntawv yog finely pulverized, uniformly tov, zoo li tus, qhuav, raug rho tawm mus rau hauv ib tug ntxeem tau lub moj khaum, impregnated nrog hlau, thiab ua tiav kom tau cov khoom tiav.

(1) Machining teb

Metalized Ceramics muaj siab hardness, liab hardness, thiab hnav tsis kam, exhibiting zoo heev txiav kev ua tau zoo nyob rau hauv siab - ceev thiab qhuav txiav. Nyob rau hauv tib txoj kev txiav, kev hnav tsis kam ntawm cov hlau- cov cuab yeej ceramic yog qhov zoo tshaj plaws ntawm cov cemented carbide zoo tib yam.

(2) Aerospace Kev Lag Luam

Txij li thaum xyoo 1950, kev tshawb fawb tau ua tiav ntawm TiC-Ni Metallized Ceramics rau siab- cov ntaub ntawv kub hauv cov dav hlau dav hlau. Txawm li cas los xij, thaum lub sij hawm sintering, qhov tsis muaj peev xwm ntawm npib tsib xee kom ntub tag TiC ua rau kev sib sau ua ke thiab kev loj hlob ntawm TiC hais, ua rau cov tawv nqaij tsis zoo thiab ua tsis tau raws li qhov xav tau cua sov-cov khoom tiv taus. TiC nws tus kheej muaj siab hardness, siab melting point, tsis tshua muaj lub ntiajteb txawj nqus, thiab zoo thermal stability, thaum tooj liab pom zoo heev hluav taws xob thiab thermal conductivity thiab zoo plasticity. TiC/Cu cov ntaub ntawv sib xyaw, tsim los ntawm TiC thiab tooj liab, muab qhov zoo ntawm ob qho tib si, ua rau lawv muaj txiaj ntsig zoo rau kev siv cov khoom siv hluav taws xob thiab thermally conductive, hnav- cov ntaub ntawv tiv taus, thiab foob pob hluav taws hauv caj pas.

(3) Lwm yam kev siv
Hlau -ceramic composite coatings tuaj yeem hloov qhov tsos, qauv, thiab tshuaj lom neeg muaj pes tsawg leeg ntawm sab nrauv ntawm cov hlau substrate, thiab muab lub substrate nrog cov khoom tshiab.Metalized Alumina Cheebtsammuab lub zog thiab tawv tawv ntawm cov hlau nrog lub siab -kub tsis kam ntawm ceramics, ua rau lawv cov khoom zoo heev. Lawv tau ua tiav hauv aerospace, aviation, tiv thaiv, tshuaj lom neeg, tshuab, hluav taws xob, thiab hluav taws xob kev lag luam.