Cov ntsiab lus ntawm kev siv tseem ceeb ntawm silicon nitride ceramics

Cov ntsiab lus ntawm kev siv tseem ceeb ntawm silicon nitride ceramics

Silicon nitride yog ib qho tseem ceeb ntawm cov khoom siv ceramic. Nws yog cov khoom siv superhard nrog lub hauv paus ntawm lubricity thiab hnav tsis kam, thiab yog atomic crystal; Antioxidant thaum kub kub. Thiab nws tuaj yeem tiv taus txias thiab kub shocks. Thaum tshav kub tshaj 1000 degree hauv huab cua, nws yuav tsis tawg txawm tias tom qab txias thiab cua sov sai. Nws yog qhov tseeb vim tias silicon nitride ceramics muaj cov khoom zoo heev uas tib neeg feem ntau siv los tsim cov khoom siv kho tshuab xws li bearings, turbine blades, mechanical sealing rings, forms mus tas li, thiab lwm yam. los tsim cov cua sov saum npoo ntawm cov khoom siv cav, nws tuaj yeem tsis tsuas yog txhim kho cov tshuab diesel, txuag roj, tab sis kuj txhim kho thermal efficiency. Tuam Tshoj, nrog rau cov teb chaws xws li Tebchaws Meskas thiab Nyij Pooj, tau tsim lub tshuab hluav taws xob zoo li no.

Silicon nitride ceramics muaj siab hardness, zoo heev tiv taus acid thiab alkali corrosion, thiab nws tus kheej-lubricating zog. Yog li ntawd, silicon nitride ceramic npas tuaj yeem siv los ua cov kabmob sib txuas nrog cov hlau lossis cov khoom siv tib lub tes tsho. Nws tus kheej zoo tuaj yeem siv rau hauv qhov chaw tshwj xeeb; Tsis tas li ntawd, cov khoom siv hluav taws xob ceramic tuaj yeem siv rau hauv cov roj av, thiab lawv cov hluav taws xob rwb thaiv tsev kuj tuaj yeem ua rau lub nplhaib rwb thaiv tsev; Vim nws qhov kub siab sintering, silicon nitride structural Cheebtsam yuav siv tau raws li high-temperature txhawb cov ntaub ntawv nyob rau hauv high-tech teb; Silicon nitride ceramic riam yog siv rau hauv cov cuab yeej siv tshuab, thiab lwm yam

Tom qab ua kom sov, silicon nitride ceramics yuav tsis yaj mus rau hauv lub cev molten thiab yuav tsis decompose mus txog 1900 degree. Lawv muaj cov tshuaj tiv thaiv zoo heev thiab tuaj yeem tiv taus yuav luag tag nrho cov inorganic acids thiab tsawg dua 30% caustic soda daws, nrog rau cov corrosion ntawm ntau cov organic acids; Nws kuj yog cov khoom siv hluav taws xob ua haujlwm siab. Dav siv dav hauv aerospace, khoom siv kho mob, chaw tsim khoom, thiab cov khoom siv hluav taws xob ntse, thiab lwm yam.

Dab tsi yog qhov ua haujlwm ntawm sintered pads

Nta: Siv rau sintering txhaj tshuaj molding hmoov metallurgy yam tsis muaj decarburization, carburization, silicon infiltration, adhesion, thiab lwm yam., kom ntseeg tau qhov zoo seem ntawm qhov chaw;

Lub cushion phaj plays lub luag haujlwm hauv qhov hnyav thiab yog qhov nruab nrab nruab nrab rau kev sib npaug ntawm cov khoom sib txawv, thiab yog ib qho tseem ceeb rau kev tswj cov qib ntawm cov khoom.

Kev kub siab sintering yog siv los ua cov phaj rov qab rau cov hmoov hlau metallurgy mesh siv rauv rauv thawb qws rauv taws. Cov khoom no muaj zoo flatness, zoo heev thermal stability, nyias lub cev zoo, thiab yuav siv tau tsis tu ncua thiab hloov tus thawj imported nyias phaj. Qhov tsis sib xws ntawm cov khoom loj yog tsawg dua {{0}}.5mm, thiab qhov tsis sib xws ntawm cov khoom me me yog 0.03mm (yuav tsum tau ua tiav).

Yog vim li cas rau xaiv sintered pads (cov kabmob daim hlau):

Thaum lub sij hawm sintering, nws yog ib qho tsim nyog yuav tsum tau siv tib lub tshav kub cia sintering ncoo (sintering phaj) kom cais cov kub kub sintering ntawm graphite phaj thiab qhov chaw; High alumina sintered pads nrog ntau qhov porosity muaj qis thermal cia kev ua tau zoo thiab zoo heev-kub tsis kam, thermal poob siab, thiab tshuaj tiv thaiv cov tshuaj tiv thaiv, ua kom cov txheej txheem sintering du thiab qhov loj ntawm cov khoom.

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