Txoj kev npaj, yam ntxwv thiab daim ntawv thov teb ntawm cov tshuaj tiv thaiv-sintered silicon carbide

Cov tshuaj tiv thaiv sintering silicon carbide yog ib txoj hauv kev los npaj cov khoom siv ceramic zoo. Nws reacts thiab presses silicon carbide hmoov nrog rau lwm yam tshuaj nyob rau hauv lub kub kub tej yam kev mob los tsim high density, siab hardness, siab hnav tsis kam thiab siab corrosion kuj cov ntaub ntawv.

1. Txoj kev npaj. Kev npaj cov txheej txheem ntawm reactive sintering silicon carbide feem ntau suav nrog ob kauj ruam: cov tshuaj tiv thaiv thiab sintering. Nyob rau hauv cov tshuaj tiv thaiv theem, silicon carbide hmoov reacts nrog rau lwm yam tshuaj nyob rau hauv high kub los tsim cov tebchaw nrog qis melting ntsiab lus, xws li alumina, boron nitride thiab calcium carbonate. Cov tebchaw no tuaj yeem ua raws li cov ntaub ntawv thiab cov khoom siv los pab txhawb kev sib koom ua ke thiab cov dej ntws ntawm silicon carbide hmoov thaum txo qhov pores thiab qhov tsis xws ntawm cov khoom. Nyob rau hauv lub sintering theem, cov tshuaj tiv thaiv cov khoom yog sintered ntawm high kub los tsim ib tug ntom ceramic khoom. Cov yam ntxwv xws li kub, siab thiab kev tiv thaiv huab cua yuav tsum tau tswj nyob rau hauv cov txheej txheem sintering kom ntseeg tau tias cov khoom muaj kev ua tau zoo. Cov khoom siv silicon carbide ceramic tau muaj cov yam ntxwv ntawm kev ua haujlwm siab, siab zog, siab corrosion kuj thiab siab hnav tsis kam.

2. Khoom. Cov tshuaj tiv thaiv-sintered silicon carbide muaj ntau yam zoo heev, ua rau nws siv dav hauv ntau qhov chaw. Ua ntej tshaj plaws, cov khoom siv silicon carbide ceramic muaj qhov hardness siab heev thiab tuaj yeem txiav cov ntaub ntawv nyuaj xws li hlau. Qhov thib ob, cov khoom siv silicon carbide ceramic muaj qhov hnav tsis zoo thiab tuaj yeem siv tau ntev hauv cov xwm txheej hnyav xws li kub thiab kub siab. Tsis tas li ntawd, cov khoom siv silicon carbide ceramic muaj kev tiv thaiv corrosion thiab kub ruaj khov, thiab tuaj yeem siv tau ntev hauv qhov chaw corrosive thiab kub siab.

3. Daim ntawv thov teb. Cov tshuaj tiv thaiv-sintered silicon carbide yog siv hauv ntau qhov chaw. Piv txwv li, nyob rau hauv kev lag luam tsim, silicon carbide ceramic cov ntaub ntawv yog dav siv nyob rau hauv abrasives, txiav cov cuab yeej thiab hnav qhov chaw. Nws cov hardness siab thiab hnav tsis kam ua rau nws siv tau rau kev txiav, sib tsoo thiab sib tsoo

Zoo tagnrho rau polishing thiab lwm yam teb. Hauv kev lag luam chemical, silicon carbide ceramic cov ntaub ntawv tuaj yeem siv los tsim cov tshuaj xws li sulfuric acid thiab cov kua qaub muaj zog xws li hydrofluoric acid vim lawv cov corrosion kuj thiab kub stability. Hauv kev lag luam aerospace thiab kev tiv thaiv, silicon carbide ceramic cov ntaub ntawv tuaj yeem siv los ua cov foob pob hluav taws thiab cov ntaub ntawv tiv thaiv thermal rau cov dav hlau ceev. Tsis tas li ntawd, cov ntaub ntawv silicon carbide ceramic kuj tuaj yeem siv rau hauv biomedical teb ntawm cov pob qij txha thiab cov cuab yeej phais orthopedic, vim tias lawv muaj biocompatibility zoo thiab hnav tsis kam.

Cov tshuaj tiv thaiv sintering silicon carbide yog ib txoj hauv kev los npaj cov khoom siv ceramic zoo. Nws reacts thiab presses silicon carbide hmoov nrog rau lwm yam tshuaj nyob rau hauv lub kub kub tej yam kev mob los tsim high density, siab hardness, siab hnav tsis kam thiab siab corrosion kuj cov ntaub ntawv. Silicon carbide ceramic cov ntaub ntawv muaj cov khoom zoo, xws li siab hardness, siab hnav tsis kam, siab corrosion kuj thiab kub stability, yog li nws yog dav siv nyob rau hauv ntau lub teb xws li kev tsim, tshuaj lom neeg kev lag luam, aerospace thiab tiv thaiv teb thiab biomedical teb.