Finyelela Ukuqina Okukhethekile Ngeshubhu ye-Silicon Carbide

I-Silicon carbide iyinto emisha enezicelo eziningi emikhakheni eyahlukene yezimboni. Kusukela emandleni ayo aqinile kuya ekumelaneni kwayo okuphezulu namazinga okushisa aphezulu kanye nezinto ezidala ukugqwala, I-silicon carbide iguqule izinqubo zokukhiqiza emhlabeni jikelele.

Ukuphila isikhathi eside okukhethekile kwe-silicon carbide nokusebenza kahle kwamandla kunomthelela omkhulu ekongeni izindleko zabasebenzisi bokugcina, kuyilapho ukuguquguquka kwayo okushisayo okumangalisayo kunezela izinzuzo ezengeziwe.

Ukumelana okushisa kakhulu

I-Silicon Carbide (Site) into yokwenziwa eqine ngokwedlulele futhi eqinile enesilinganiso sobulukhuni se-Mohs 9, icishe isondele idayimane. I-SiC inikeza ukumelana kwamakhemikhali okuhle kakhulu ezindaweni eziningi kanye ne-thermal conductivity ephezulu – izici ekahle amashubhu exchanger ukushisa, gqoka amapayipi aqinile, ulayini kanye nezingxenye ezimelana nokugqwala.

Amashubhu e-Kerui silicon carbide angamelana namazinga okushisa aphezulu kakhulu, okwenza kube yisinqumo esifanele sokusebenzisa njengezisekelo zamashalofu eziko. Ukukhetha kwethu kuhlanganisa i-sintered, ukusabela kuhlanganisiwe, kanye namafomu afakwe kabusha ukuze ahlangabezane nezidingo ezihlukene zokuqina.

Amashubhu e-SiC adlula amashubhu endabuko e-ceramic kanye nensimbi ye-alloy ngokukwazi kwawo ukumelana nezinga lokushisa elidlulele nezindawo kalula., ukuhlala isikhathi eside ngokwedlulele futhi imelana nemihuzuko, ngisho nangemva kokusetshenziswa njalo. Ngaphezu kwalokho, amashubhu ethu aphathwa ngokucophelela ekugcinweni nasekuthuthweni ukuze agweme ukulimala ngesikhathi esifanayo kuqinisekiswa ikhwalithi ngokuhlola ngokucophelela kanye nokuhlolwa kwamanzi emanzini. 165-186 ingcindezi yebha – lokhu kuqinisekisa ukuthi amashubhu akho azokwenza njengoba nje ehlosiwe uma efakwe esithandweni sakho noma kuhhavini.

Ukumelana kahle kokugqwala okuhle

I-Silicon carbide iyimpahla eqinile futhi eqinile, ifanele izindawo zokushisa eziphakeme ezimelana nokugqwala, ukuyenza ibe yinhle kakhulu ukukhetha kwempahla ezosetshenziswa ezitshalweni zikagesi nakwezinye izimboni zokushisa okuphezulu. Ngaphezu kwalokho, conductivity yayo ezishisayo kusho ukuthi yonga amandla abalulekile uma esetshenziswa iziko.

Izingxenye ze-Ceramic sekuyisikhathi eside zisetshenziswa njengendlela eyongayo esikhundleni se-tungsten carbide (I-WC) izingxenye kuma-nozzles aqhumayo ngenxa yokumelana kwazo nokugqoka okuphezulu, amazinga aphansi othuli, kanye nokukwazi ukugcina i-geometry efanele. Banikeza ukuphila kwesevisi okude kakhulu ngezindleko eziphansi. Izinzuzo zale nto zifaka ukugqwala nokumelana nokugqoka kanye nokugcina i-geometry efanele yama-nozzles aqhumayo.

Amashubhu e-Silicon Carbide ayizici ezikhethekile ezisetshenziswa kumagobolondo namashubhu okushintshanisa ukushisa ukuze kufinyezwe, ukushisa, ukuhwamuka, amunca noma ajiye amakhemikhali adlayo. Izicelo zabo ezimbonini zokushisa okuphezulu ezifana nokuncibilikisa insimbi, ukukhiqizwa kwamakhemikhali nokucwengisiswa kanye nokwakhiwa kwe-aerospace kanye nesikhungo sikagesi kwenza lezi zingxenye ze-ceramic zibe usizo kakhulu. Izinzuzo zabo eziyinhloko zingamandla amahle kakhulu, ukuqina nokuzinza kwe-dimensional – Izimfanelo iSilicon Carbide ehamba phambili kuzo.

Ukuphila Okuhlala Isikhathi Eside

I-Silicon carbide inokumelana nokugqwala okuhle kakhulu kanye nokumelana nemihuzuko, ukuziqhayisa ngobulukhuni obusondela kobedayimane. Ngaphezu kwalokho, inamazinga aphansi okunwebeka okushisayo kanye nezindawo zokumelana ne-asidi ephezulu ukuze isetshenziswe ezinhlotsheni eziningi zokusebenza.

Amashubhu e-silicone carbide ayinketho efanelekile yezindawo ezidingayo ezitholakala ezimbonini zokucubungula amakhemikhali, izimboni zokwenza amaphepha kanye nezimboni zokuvimbela, futhi ingasebenza njengengxenye ye-thrust kanye nejenali. Ukumelana nokugqwala kwazo okuvelele kunciphisa noma yimaphi amathuba okuhluleka okubangelwa ukuhlasela kwamakhemikhali kuyilapho i-coefficient yawo ephansi yokwanda okushisayo kuyivumela ukuthi isebenze ngesivinini esikhulu sokuzungeza ngaphandle kokulimala okungaba khona..

I-Kerui inikeza i-sintered, amashubhu e-silicon carbide ahlanganiswe futhi aphinde acwebezeliswa kabusha afanelekela izisekelo zeshalofu lomlilo ngenxa yamandla awo aphezulu okusebenza kanye nokumelana ne-oxidation.. Ngaphezu kwalokho, bafaka igesi-impermeability kuze kube 31 I-MPa phakathi kwezinga lokushisa legumbi kanye 1000 degC kanye nezimo ze-vacuum ezifanele ngokuphelele.

Ukusebenza Kwamandla

Ishubhu ye-silicon carbide ceramic inobulukhuni obuqhathaniswa nedayimane, okwenza ikwazi ukumelana namazinga okushisa adlulele kanye nokugqwala ezindaweni ezinobutha. Ngaphezu kwalokho, ukwakhiwa kwayo okungasindi kanye ne-bandgap ebanzi kuyenza ifaneleke izicelo zemboni yamandla. Ngaphezu kwalokho, le nto isebenza njenge-abrasive enokumelana okukhulu nokugqoka kanye nezakhiwo zokumelana nokushaqeka okushisayo – okwenza kube usizo njengento yolwelwesi ezithandweni eziqhumayo, ama-kilns nama-deoxidizers kanye nama-nozzles of spray, ama-nozzle aqhumayo kanye nezingxenye zamashubhu ezisetshenziselwa ukusetshenziswa kwemboni yamandla.

I-Sintered silicon carbide ceramics iyisixazululo esihle kakhulu sezinhlelo eziningi zokupompa, okuhlanganisa ukucutshungulwa kwamakhemikhali, izimayini kanye ne-pulp kanye nokukhiqizwa kwephepha. Izinzuzo zabo ezivelele zibenza bakwazi ukuya kuzo kulezi zimo ezinzima njengokumelana nokugqwala kanye nempilo yokusebenza enwetshiwe.; ngaphezu kwalokho i-coefficient yabo ephansi ye-sliding friction coefficient of expansion iqinisekisa ukuthi i-ceramic ngeke ilimaze izingxenye zemishini phakathi nesikhathi sayo sokuphila. – into abaningi abaqhudelana nabo abakunikezi.