Izinto ezintsha ze-SiC-Isixhobo seCeramic Elukhuni njengeDayimane

I-silicon carbide iziphatha phantse njengedayimane. Ayisiyonto ilula kuphela, kodwa kunye neyona nto inzima kakhulu ye-ceramic kwaye ine-conductivity egqwesileyo ye-thermal, ukwanda kwe-thermal ephantsi kwaye iyamelana kakhulu ne-acids kunye ne-lye.

Ngesilicon carbide ceramics iipropathi eziphathekayo zihlala zingaguquguquki ukuya kumaqondo obushushu angaphezu kwe-1,400°C. Imodyuli ephezulu ye-Young> 400 GPa iqinisekisa uzinzo olubalaseleyo. Ezi zixhobo eziphathekayo zenza i-silicon carbide imiselwe kwangaphambili ukuba isetyenziswe njengemathiriyeli yokwakha. I-Silicon carbide masters corrosion, i-abrasion kunye nokhukuliseko ngobuchule njengoko imela ukunxitywa kwe-frictional. Amacandelo asetyenziswa kwizityalo zekhemikhali, ii-mills, izandisi kunye ne-extruders okanye njengemibhobho, umzekelo.

"Iintlobo ngeentlobo ze-SSiC (i-sintered silicon carbide) kunye ne-SiSiC (i-silicon infiltrated silicon carbide) ziye zazimisela.
I-silicon carbide ikhuselekile ngokwetyhefu kwaye inokusetyenziswa kwishishini lokutya. Esinye isicelo esiqhelekileyo samacandelo e-silicon carbide yitekhnoloji yokutywina eguquguqukayo kusetyenziswa iibheringi zokukhuhlana kunye nokutywinwa koomatshini, umzekelo kwiimpompo kunye neenkqubo zokuqhuba. Xa kuthelekiswa nesinyithi, i-silicon carbide yenza izisombululo ezinoqoqosho oluphezulu kunye nobomi besixhobo obude xa isetyenziswa nobushushu, imidiya ephezulu yobushushu. I-silicon carbide ceramics nayo ifanelekile ukusetyenziswa kwiimeko ezifunwayo kwi-ballistics, ukuveliswa kweekhemikhali, iteknoloji yamandla, ukuveliswa kwephepha kunye namacandelo enkqubo yombhobho.

I-Reaction bonded silicon carbide, ekwaziwa ngokuba yisiliconized silicon carbide okanye i-SiSiC, luhlobo lwesilicon carbide eyenziwe yikhemikhali yokusabela phakathi kweporous carbon okanye igraphite enesilicon etyhidiweyo. Ngenxa yokushiyeka okushiyekileyo kwesilicon, i-action bonded silicon carbide ihlala ibizwa ngokuba yisiliconized silicon carbide, okanye isifinyezo sayo esithi SiSiC.

Ukuba i-silicon carbide ecocekileyo iveliswa ngokufakwa kwe-silicon carbide powder, ihlala iqulethe iikhemikhali ezibizwa ngokuba yi-sintering aids, ezongezwa ukuxhasa inkqubo ye-sintering ngokuvumela amaqondo obushushu asezantsi. Olu hlobo lwe-silicon carbide luhlala lubizwa ngokuba yi-sintered silicon carbide, okanye ishunqulelwe kwi-SSiC.

I-silicon carbide powder ifunyenwe kwi-silicon carbide eveliswe njengoko kuchaziwe kwinqaku le-silicon carbide.

（Viewed from: CERAMTEC）caroline@rbsic-sisic.com