I-silicon carbide eluhlaza kanye ne-silicon carbide emnyama: Umehluko ojulile ngale kombala
Emkhakheni omkhulu wezinto zezimboni,i-silicon carbide eluhlazafuthii-silicon carbide emnyama zivame ukukhulunywa ngazo ndawonye. Zombili zingama-abrasives abalulekile enziwa ukuncibilika kwezinga lokushisa eliphezulu ezithandweni zokumelana nezinto zokusetshenziswa njengesihlabathi se-quartz ne-petroleum coke, kodwa ukuhluka kwazo kungaphezu kokuhluka kombala ongaphezulu. Kusukela kumehluko ocashile wezinto ezingavuthiwe, kuya ekwehlukeni kwezici zokusebenza, kuya emehlukweni omkhulu ezimeni zohlelo lokusebenza, lo mehluko ulolonge ngokuhlanganyela izindima eziyingqayizivele zalokhu okubili emkhakheni wezimboni.
1 Umehluko ekuhlanzekeni kwempahla eluhlaza kanye nesakhiwo sekristalu sinquma izici ezihlukene zalokhu okubili.
I-silicon carbide eluhlazayenziwe nge-petroleum coke nesihlabathi se-quartz njengezinto eziyinhloko, futhi kunezelwa usawoti ukuze kucwengwe. Ngale nqubo, okuqukethwe kokungcola kuncishiswa kakhulu, futhi i-crystal iyisistimu evamile ye-hexagonal enemiphetho ebukhali namakhona. Ukucutshungulwa kwempahla eluhlaza ye-silicon carbide kulula, futhi akukho sawoti owengeziwe. Ukungcola okufana nensimbi ne-silicon esele ezintweni ezingavuthiwe kwenza izinhlayiya zayo zekristalu zingabi nokwakheka futhi zibe yindilinga futhi zibe buthuntu emaphethelweni nasemakhoneni.
2 Umehluko ezintweni ezingavuthiwe kanye nezakhiwo ziholela ezinhlobonhlobo zezakhiwo zazo zombili.
Mayelana nobulukhuni, ubulukhuni be-Mohs bei-silicon carbide eluhlazaicishe ibe ngu-9.5, isibili ngemuva kwedayimane, futhi ingacubungula izinto ezinobulukhuni obuphezulu; I-silicon carbide emnyama icishe ibe ngu-9.0, enobunzima obuphansi kancane. Ngokuphathelene nokuminyana, i-silicon carbide eluhlaza ingu-3.20-3.25g/cm³, enesakhiwo esiminyene; I-silicon carbide emnyama ingu-3.10-3.15g/cm³, ayikhululekile. Ngokusebenza, i-silicon carbide eluhlaza inokuhlanzeka okuphezulu, ukuqhutshwa kahle kwe-thermal, ukuqhutshwa kukagesi kanye nokumelana nokushisa okuphezulu, kodwa i-brittle futhi kulula ukugqekeza emaphethelweni amasha; I-silicon carbide emnyama inokuguquguquka okushisayo okubuthakathaka kancane kanye nokuhamba kukagesi, i-brittleness ephansi, kanye nokumelana nomthelela wezinhlayiyana ezinamandla.
3 Ukwehluka kokusebenza kunquma ukugxila kokusetshenziswa kwakho kokubili.
I-silicon carbide eluhlaza ineubulukhuni obuphezulukanye nezinhlayiya ezibukhali, futhi inhle ekucubunguleni izinto ezinobulukhuni obuphezulu kanye nezingaqinile kancane: emkhakheni ongeyona insimbi, ingasetshenziselwa ukugaya ingilazi, ukusika i-ceramic, ama-silicon wafers we-semiconductor, nokupholisha isafire; ekucutshungulweni kwensimbi, inokusebenza okuhle kakhulu kokunemba okuphezulu kokusebenza kwezinto ezifana ne-carbide enosimende nensimbi eqinile, futhi isetshenziswa kabanzi emikhiqizweni enjengamasondo okugaya namadiski okusika. I-silicon carbide emnyama ikakhulukazi icubungula ubulukhuni obuphansi, izinto eziqine kakhulu futhi ifanele ukusetshenzwa kwezinsimbi ezingezona ayoni nezinto eziphikisayo njengensimbi ekhonjiwe, ithusi ne-aluminium. Ezigcawini ezimahhadlahhadla njengokuchithwa kwensimbi kanye nokususwa kokugqwala kwensimbi, sekuyinto evamile embonini ngenxa yokungabizi kwayo okuphezulu.
Nakuba i-silicon carbide eluhlaza kanyei-silicon carbide emnyamaziyingxenye yesistimu yezinto ze-silicon carbide, izakhiwo zabo zomzimba namakhemikhali kanye nezici zohlelo lokusebenza zihluke kakhulu. Ngokusungulwa okuqhubekayo kwesayensi yezinto zokwakha kanye nobuchwepheshe bokucubungula, i-silicon carbide eluhlaza kanye ne-silicon carbide kulindeleke ukuthi kuzuzwe ukunwetshwa okubanzi kwezicelo emikhakheni yobuchwepheshe obuphezulu njengokukhiqizwa kwe-semiconductor, ukugaya okunembayo, namandla amasha, ukuhlinzeka ngosekelo lwempahla ebalulekile yokuthuthukiswa kwekhwalithi ephezulu yemboni yesimanje.