Silicon carbide ceramicmolding process kuenzanisa: sintering process uye zvakanakira nekuipira
Mukugadzirwa kwesilicon carbide ceramics, kuumba ingori yekubatanidza mukuita kwese. Sintering ndiyo yakakosha maitiro inobata zvakananga kuita kwekupedzisira uye kuita kweceramics. Kune nzira dzakawanda dzakasiyana dzekuisa silicon carbide ceramics, imwe neimwe iine zvayakanakira nezvayakaipira. Mune ino blog post, isu tichaongorora iyo sintering maitiro esilicon carbide ceramics uye kuenzanisa nzira dzakasiyana.
1. Rection sintering:
Reaction sintering inyanzvi yekugadzira yakakurumbira yesilicon carbide ceramics. Iyi iri nyore uye inodhura-inoshanda pedyo net-to-size process. Sintering inowanikwa ne silicidation reaction pane yakaderera tembiricha ye1450 ~ 1600 ° C uye ipfupi nguva. Iyi nzira inogona kuburitsa zvikamu zvehukuru hukuru uye chimiro chakaoma. Zvisinei, inewo zvayakaipira. Iyo siliconizing reaction inotungamira kune 8% ~ 12% yemahara silicon musilicon carbide, iyo inoderedza yayo yepamusoro-tembiricha michina zvimiro, kushora kwekudzivirira, uye oxidation kuramba. Uye tembiricha yekushandisa inogumira pasi pe1350°C.
2. Kupisa kudzvanya sintering:
Kupisa kudzvanya sintering imwe nzira yakajairika yekuisa silicon carbide ceramics. Nenzira iyi, yakaoma silicon carbide poda inozadzwa muforoma uye inopisa paunenge uchishandisa kudzvanywa kubva kune uniaxial kutungamira. Uku kudziya panguva imwe chete uye kudzvanywa kunosimudzira kupararira kwechikamu, kuyerera, uye kufambisa kukuru, zvichikonzera silicon carbide ceramics ine zviyo zvakatsetseka, yakakwira hukama, uye yakanakisa michina zvivakwa. Nekudaro, kupisa kudzvanya sintering kunewo zvayakaipira. Maitiro acho akaomarara uye anoda zvemhando yepamusoro mold zvinhu nemidziyo. Kubudirira kwekugadzira kwakaderera uye mutengo wakakwira. Mukuwedzera, iyi nzira yakakodzera chete kune zvigadzirwa zvine maumbirwo ari nyore.
3. Kupisa isostatic kudzvanya sintering:
Kupisa isostatic kudzvanya (HIP) sintering inzira inosanganisira iyo yakasanganiswa chiitiko chekushisa kwepamusoro uye isotropically yakaenzana yakakwirira-kudzvanywa gasi. Iyo inoshandiswa kunyura uye densification yesilicon carbide ceramic poda, muviri wakasvibira kana pre-sintered muviri. Kunyangwe HIP sintering inogona kuvandudza mashandiro esilicon carbide ceramics, haishandiswe zvakanyanya mukugadzirwa kwakawanda nekuda kweiyo yakaoma maitiro uye kudhura kwakanyanya.
4. Kuchema pasina kumanikidzwa:
Pressureless sintering inzira ine yakanakisa tembiricha yekuita, yakapusa sintering maitiro uye yakaderera mutengo wesilicon carbide ceramics. Inobvumirawo nzira dzakawanda dzekugadzira, ichiita kuti ive yakakodzera kune yakaoma maumbirwo uye zvikamu zvakakora. Iyi nzira yakanyatsokodzera kugadzirwa kukuru kwemaindasitiri esilicon ceramics.
Muchidimbu, iyo sintering process inhanho yakakosha mukugadzirwa kweSiC ceramics. Sarudzo ye sintering nzira inoenderana nezvinhu zvakaita sezvinodiwa zveceramic, kuomarara kwechimiro, mutengo wekugadzira uye kugona. Imwe neimwe nzira ine zvayakanakira nezvayakaipira, uye zvakakosha kunyatso funga nezvezvinhu izvi kuti uone iyo yakanyatsokodzera sintering process yeimwe application.
Nguva yekutumira: Aug-24-2023