I-silicon carbide eluhlaza kunye ne-silicon carbide emnyama: Umahluko omkhulu ngaphaya kombala
Kwintsimi enkulu yezinto zoshishino,i-silicon carbide eluhlazakwayei-silicon carbide emnyama zidla ngokukhankanywa kunye. Zombini zizinto ezibalulekileyo ezibrasives ezenziwe ngokunyibilikisa obushushu obuphezulu kwii-oven ezichaseneyo ngezinto eziluhlaza ezifana nesanti ye-quartz kunye ne-petroleum coke, kodwa umahluko wazo ungaphezulu kakhulu kunomahluko wombala kumphezulu. Ukususela kumahluko amancinci kwizinto eziluhlaza, ukuya kumahluko kwiimpawu zokusebenza, ukuya kumahluko omkhulu kwiimeko zokusetyenziswa, olu mahluko luye lwabumba indima eyahlukileyo yezi zimbini kwicandelo lezemizi-mveliso.
1 Umahluko kucoceko lwezinto ezikrwada kunye nolwakhiwo lwekristale umisela iimpawu ezahlukeneyo zezi zimbini.
Ikhabhayithi yesilicon eluhlazaYenziwe nge-petroleum coke kunye nesanti ye-quartz njengezinto eziphambili, kwaye ityuwa yongezwa ukuze icoceke. Ngale nkqubo, umxholo wokungcola uncitshiswa kakhulu, kwaye ikristale yinkqubo eqhelekileyo ye-hexagonal enemiphetho ebukhali kunye neekona. Ukulungiswa kwezinto eziluhlaza ze-silicon carbide emnyama kulula kakhulu, kwaye akukho tyuwa yongezwayo. Ukungcola okufana nesinyithi kunye ne-silicon okushiyekileyo kwizinto eziluhlaza kwenza amasuntswana ayo ekristale angalinganiyo kwimilo kwaye ajikeleze kwaye abe buthuntu emaphethelweni nakwiikona.
2 Umahluko kwizinto ezikrwada kunye nezakhiwo ukhokelela kwiimpawu zomzimba ezahlukeneyo zezi zimbini.
Ngokuphathelele ubulukhuni, ubulukhuni bukaMohsi-silicon carbide eluhlazaimalunga ne-9.5, ilandela idayimani kuphela, kwaye inokucubungula izinto ezinobunzima obuphezulu; i-silicon carbide emnyama imalunga ne-9.0, inobunzima obuphantsi kancinci. Ngokuphathelele uxinano, i-silicon carbide eluhlaza yi-3.20-3.25g/cm³, enesakhiwo esixineneyo; i-silicon carbide emnyama yi-3.10-3.15g/cm³, ekhululekileyo. Ngokuphathelele ukusebenza, i-silicon carbide eluhlaza inobunyulu obuphezulu, i-thermal conductivity elungileyo, i-electrical conductivity kunye nokumelana nobushushu obuphezulu, kodwa ibuthathaka kwaye kulula ukuyiqhekeza ibe yimiphetho emitsha; i-silicon carbide emnyama inobunyulu obuncinci bobushushu kunye ne-electrical conductivity, ibuthathaka obuphantsi, kunye nokumelana okunamandla kwempembelelo yamasuntswana.
3 Umahluko ekusebenzeni umisela ingqwalasela yesicelo sazo zombini.
I-silicon carbide eluhlaza ineubulukhuni obuphezulukunye namasuntswana abukhali, kwaye ilungile ekucubunguleni izinto ezinobunzima obuphezulu kunye nobunzima obuphantsi: kwicandelo elingeyonsimbi, ingasetyenziselwa ukugaya iglasi, ukusika iseramikhi, ii-wafers ze-silicon ze-semiconductor, kunye nokupolisha isafire; ekucubunguleni isinyithi, inokusebenza okugqwesileyo kokucubungula okuchanekileyo kwizixhobo ezifana ne-carbide eqinisiweyo kunye nentsimbi eqinileyo, kwaye isetyenziswa kakhulu kwiimveliso ezifana namavili okugaya kunye neediski zokusika. I-carbide ye-silicon emnyama ikakhulu isebenza kwizixhobo ezinobunzima obuphantsi, nobunzima obuphezulu kwaye ifanelekile ekucubunguleni iintsimbi ezingezizo i-ferrous kunye nezinto ezichasene ne-refractory ezifana ne-cast iron, i-copper kunye ne-aluminium. Kwiindawo ezinzima ezifana ne-deburring castings kunye nokususwa kwe-rust yentsimbi, iye yaba lukhetho oluqhelekileyo kushishino ngenxa yeendleko zayo eziphezulu.
Nangona i-silicon carbide eluhlaza kunyei-silicon carbide emnyamaZiyinxalenye yenkqubo yezinto ze-silicon carbide, iimpawu zazo zomzimba nezekhemikhali kunye neempawu zokusetyenziswa zahluke kakhulu. Ngokuqhubeka nokuvelisa izinto ezintsha zesayensi yezinto kunye nobuchwepheshe bokucubungula, i-silicon carbide eluhlaza kunye ne-silicon carbide emnyama kulindeleke ukuba zifikelele ekwandiseni ukusetyenziswa kwazo kwiindawo zobugcisa obuphezulu ezifana nokuvelisa i-semiconductor, ukugaya ngokuchanekileyo, kunye namandla amatsha, zibonelela ngenkxaso yezinto ezibalulekileyo kuphuhliso oluphezulu lweshishini lanamhlanje.