I-silicon carbide (SiC) iyinto ekhethwayo ezinhlotsheni ezahlukene zezimboni ngenxa yokuqina kwayo okuvelele, ukuqina kokushisa, kanye nokumelana namakhemikhali. Phakathi kwezinhlobo zayo eziningi, amashubhu e-silicon carbide aziswa kakhulu ngokuqina kwawo nokusebenza kwawo ezindaweni ezinzima. Lesi sihloko sizogxila enkambisweni eyinkimbinkimbi yokukhiqiza.amashubhu e-silicon carbide, kugxilwe ekukhiqizweni kwamashubhu e-ceramic e-silicon carbide axutshwe nokusabela.
Ukuqonda i-Silicon Carbide
Ngaphambi kokuthi singene enkambisweni yokukhiqiza, kubalulekile ukuqonda ukuthi iyini i-silicon carbide. I-Silicon carbide iyinhlanganisela ye-silicon ne-carbon eyaziwa ngezakhiwo zayo eziyingqayizivele. Iyi-semiconductor emelana namazinga okushisa aphezulu, i-oxidation, kanye nokugqwala. Lezi zakhiwo zenza amashubhu e-silicon carbide afanele ukusetshenziswa ezimbonini ezifana nezindiza, izimoto, kanye nokucubungula amakhemikhali.
Ukulungiswa kwezinto zokusetshenziswa
Isinyathelo sokuqala ekukhiqizeni amashubhu e-silicon carbide ukulungiselela izinto zokusetshenziswa. Impuphu ye-silicon esezingeni eliphezulu kanye nempuphu ye-carbon kuyizinto ezidingekayo ekukhiqizeni i-silicon carbide (RBSC) esebenza kahle kakhulu. Ubumsulwa balezi mpuphu bubaluleke kakhulu; noma yikuphi ukungcola kuzothinta kakhulu ikhwalithi yomkhiqizo wokugcina. Ngaphezu kwalokho, ukusatshalaliswa kosayizi wezinhlayiya zama-powder kumele kulawulwe ngokucophelela. Usayizi wezinhlayiya ofanayo uqinisekisa ukuthi izinto zisabela ngokulinganayo ngesikhathi senqubo yokusila, okuholela kumkhiqizo wokugcina oqinile futhi oqinile.
Izithako Nokuxuba
Uma izinto zokusetshenziswa sezilungisiwe, isinyathelo esilandelayo ukuhlanganisa nokuxuba. Le nqubo ihilela ukulawula ngokunembile isilinganiso sempuphu ye-silicon nempuphu yekhabhoni. Isilinganiso esifanele sibalulekile ngoba sinquma ukusabela kwamakhemikhali okuzokwenzeka ngesikhathi sokusila. Ukuxuba ngokuphelele izimpuphu ukuqinisekisa ukusatshalaliswa okufanayo kubalulekile ukuze kufezwe ukwakheka kwe-silicon carbide okuhambisanayo. Lesi sinyathelo sibalulekile; noma yikuphi ukungahambisani engxubeni kungabangela amaphutha epayipini lokugcina le-silicon carbide.
Ukwakha isimo sepayipi
Uma inqubo yokuhlanganisa nokuxuba isiqediwe, isinyathelo esilandelayo ukubumba ipayipi. Lokhu kungafezwa ngezindlela ezahlukahlukene, okuhlanganisa ukucindezela okubandayo kwe-isostatic (CIP) noma i-extrusion. I-CIP ihilela ukufaka ingcindezi efanayo ku-powder exubile kudayi, okuholela esimweni esiqinile nesihlelekile. Ngaphandle kwalokho, i-extrusion ivumela ukwakheka okuqhubekayo kwezinto, okuwusizo kakhulu ekukhiqizeni amapayipi amade. Ukukhetha indlela yokubumba kuncike kusayizi ofiselekayo kanye nemininingwane yomkhiqizo wokugcina.
Inqubo yokuhlanza
Inqubo yokusha yilapho kwenzeka khona umlingo. Ishubhu le-silicon carbide elakhiwe lifakwa esithandweni sokushisa esiphezulu ngesivinini sokushisa esilawulwa ngokuqinile kanye nesikhathi sokubamba. Phakathi nalesi sigaba, i-silicon powder kanye ne-carbon powder kusabela ngamakhemikhali ukuze kwakheke isakhiwo se-silicon carbide esiminyene. Izinga lokushisa lokusha ngokuvamile liphakathi kuka-1400°C no-2000°C, kuye ngokuthi kwenziwe kanjani kanye nezakhiwo ezifiselekayo zomkhiqizo wokugcina. Lesi sinyathelo sibalulekile ngoba sinquma amandla omshini kanye nokuzinza kokushisa kweshubhu le-silicon carbide.
Ubuchwepheshe bokucubungula ngemuva
Ngemva kokuba inqubo yokusila isiqediwe, ishubhu le-silicon carbide liyacutshungulwa ngemuva kokucubungula. Lesi sigaba sihlanganisa ukushintshwa kanye nokupholisha ubuso ukuze kuhlangatshezwane nezidingo eziqondile zobukhulu kanye nekhwalithi yobuso. Ukushintshwa kungabandakanya ukusika, ukugaya noma ukubhoboza ukuze kufezwe ubukhulu obudingekayo, kuyilapho ukupholisha ubuso kuthuthukisa ubuhle kanye nokusebenza kahle kweshubhu. Ukushintshwa ngemuva kokucubungula kubalulekile ukuqinisekisa ukuthi umkhiqizo wokugcina uhlangabezana nezindinganiso zemboni kanye nemininingwane yamakhasimende.
Izinyathelo Zokulawula Ikhwalithi
Kuyo yonke inqubo yokukhiqiza, sisebenzisa izinyathelo zokulawula ikhwalithi ukuqinisekisa ukuthi amashubhu e-silicon carbide ahlangabezana nezindinganiso ezidingekayo. Lokhu kuhlanganisa ukuhlola ubumsulwa bezinto zokusetshenziswa, ukuqapha ukuhambisana kwenqubo yokuxuba, kanye nokuhlola ngesikhathi nangemva kokusila. Amasu athuthukile njenge-X-ray diffraction kanye ne-scanning electron microscopy angasetshenziswa ukuhlaziya isakhiwo se-microstructure se-silicon carbide ukuqinisekisa ukuthi sihlangabezana nezindinganiso zokusebenza ezidingekayo.
Ukusetshenziswa kwe-Silicon Carbide Tube
Amashubhu e-silicon carbide asetshenziswa ezinhlobonhlobo zezicelo ngenxa yezakhiwo zawo ezinhle kakhulu. Embonini yokucubungula amakhemikhali, asetshenziselwa ukudlulisa uketshezi oluqothulayo, kanti emkhakheni wezindiza, asetshenziswa njengezingxenye ezindaweni ezishisa kakhulu. Ngaphezu kwalokho, amashubhu e-silicon carbide asetshenziswa kakhulu ekusetshenzisweni kwamandla, njenge-reactor yenuzi kanye nama-gas turbine, lapho ikhono lawo lokubekezelela izimo ezimbi kakhulu libaluleke kakhulu.
Ngokufigqiwe
Ukukhiqizwa kwamashubhu e-silicon carbide kuyinqubo eyinkimbinkimbi futhi ebucayi edinga ukunakwa ngokucophelela kwemininingwane kuzo zonke izigaba. Kusukela ekulungisweni kwezinto zokusetshenziswa ezisezingeni eliphezulu kuya ekulawulweni okunembile kwenqubo yokusila, isinyathelo ngasinye sidlala indima ebalulekile ekhwalithini nasekusebenzeni komkhiqizo wokugcina. Njengoba izimboni ziqhubeka nokufuna izinto ezingamelana nezimo ezinzima, isidingo samashubhu e-silicon carbide cishe sizokhula, okwenza kubaluleke kakhulu ukuqonda inqubo yawo yokukhiqiza. Kungakhathaliseki ukuthi asetshenziselwa izinhlelo zokusebenza zezimboni noma ukusetshenziswa kobuchwepheshe obuthuthukisiwe, amashubhu e-silicon carbide amelela intuthuko enkulu kwisayensi yezinto zokwakha, enikeza ukuqina nokuthembeka ezindaweni ezahlukahlukene.
Isikhathi sokuthunyelwe: Mashi-26-2025