Nigute ifu ya micro ya SiC ikorwa?

SiC imwe ya kirisiti ni Itsinda rya IV-IV ryuzuzanya ryibikoresho bigizwe nibintu bibiri, Si na C, muburyo bwa stoichiometric ya 1: 1. Gukomera kwayo ni kumwanya wa kabiri nyuma ya diyama.

Kugabanya karubone uburyo bwa silicon oxyde yo gutegura SiC bishingiye cyane cyane kumiti ikurikira:

Igikorwa cyo kugabanuka kwa karubone ya okiside ya silicon iragoye cyane, aho ubushyuhe bwa reaction bugira ingaruka kubicuruzwa byanyuma.

Muburyo bwo gutegura karbide ya silicon, ibikoresho fatizo bishyirwa mubitanura birwanya. Itanura rirwanya rigizwe nurukuta rwanyuma kumpande zombi, hamwe na electrode ya grafite hagati, hamwe nitanura ryitanura rihuza electrode ebyiri. Kuri periferiya yibice byitanura, ibikoresho fatizo bitabira reaction byabanje gushyirwa, hanyuma ibikoresho bikoreshwa mukubungabunga ubushyuhe bigashyirwa kuri peripheri. Iyo gushonga bitangiye, itanura rirwanya imbaraga kandi ubushyuhe buzamuka bugera kuri dogere selisiyusi 2.600. Ingufu z'amashanyarazi zihererekanwa mumashanyarazi zinyuze hejuru yitanura, bigatuma zishyuha buhoro buhoro. Iyo ubushyuhe bwumuriro burenze dogere selisiyusi 1450, reaction yimiti ibaho kubyara karubide ya silicon na gaze ya karubone. Mugihe inzira yo gushonga ikomeje, ubushuhe bwo hejuru murwego rwo hejuru buzagenda bwiyongera buhoro buhoro, kandi na karubide ya silicon yakozwe nayo iziyongera. Carbide ya Silicon ikomeza kuboneka mu itanura, kandi binyuze mu guhumeka no kugenda, kristu ikura buhoro buhoro hanyuma amaherezo igahurira muri kristu ya silindari.

Igice cyurukuta rwimbere rwa kirisiti itangira kubora kubera ubushyuhe bwinshi burenga dogere selisiyusi 2600. Ikintu cya silicon cyakozwe no kubora kizongera guhuza hamwe na karubone ishinzwe gukora karbide nshya ya silicon.

Iyo imiti ya karibide ya silicon (SiC) irangiye kandi itanura rimaze gukonja, intambwe ikurikira irashobora gutangira. Ubwa mbere, inkuta z'itanura zirasenywa, hanyuma ibikoresho fatizo mu itanura biratoranywa kandi bigashyirwa mu byiciro. Ibikoresho byatoranijwe byatoranijwe birajanjagurwa kugirango tubone ibikoresho bya granular dushaka. Ibikurikira, umwanda uri mubikoresho fatizo ukurwaho binyuze mu koza amazi cyangwa gusukura ukoresheje aside na alkali ibisubizo, hamwe no gutandukanya magnetiki nubundi buryo. Ibikoresho bibisi bisukuye bigomba gukama hanyuma bikongera kugenzurwa, hanyuma ifu ya karibide ya silicon nziza irashobora kuboneka. Nibiba ngombwa, ifu irashobora gutunganywa neza ukurikije imikoreshereze nyayo, nko gushiraho cyangwa gusya neza, kugirango itange ifu nziza ya silicon karbide.

Intambwe zihariye nizi zikurikira:
(1) Ibikoresho bibisi
Icyatsi kibisi cyicyatsi kibisi cyakozwe no kumenagura coarser icyatsi kibisi silicon. Ibigize imiti ya karubide ya silicon igomba kuba hejuru ya 99%, naho karubone yubusa na okiside yubusa igomba kuba munsi ya 0.2%.

(2) Kumeneka
Kumenagura umucanga wa karubide ya silicon mo ifu nziza, ubu hakoreshwa uburyo bubiri mubushinwa, bumwe ni urusyo rwumupira wigihe gito rujanjagura, urundi rukamenagura ukoresheje urusyo rwifu.

(3) Gutandukana kwa rukuruzi
Nuburyo ki bwakoreshwa mu kumenagura ifu ya karubide ya silicon mo ifu nziza, gutandukanya magnetiki itose no gutandukanya imashini zikoreshwa mubisanzwe. Ni ukubera ko nta mukungugu uhari mugihe cyo gutandukanya magnetiki yatose, ibikoresho bya magneti biratandukanijwe rwose, ibicuruzwa nyuma yo gutandukana kwa magneti birimo ibyuma bike, kandi ifu ya karubide ya silicon yatwawe nibikoresho bya magneti nayo ni mike.

(4) Gutandukanya amazi
Ihame shingiro ryuburyo bwo gutandukanya amazi nugukoresha umuvuduko utandukanye wo gutuza wa silicon karbide ibice bya diametre zitandukanye mumazi kugirango ikore ingano yubunini.

(5) Kugaragaza Ultrasonic
Hamwe niterambere ryikoranabuhanga rya ultrasonic, ryakoreshejwe cyane mugusuzuma ultrasonic yerekana tekinoroji ya micro-powder, ishobora gukemura cyane cyane ibibazo byo gusuzuma nka adsorption ikomeye, agglomeration yoroshye, amashanyarazi ahamye, ubwiza buhebuje, ubucucike bukabije, hamwe nuburemere bwihariye bwihariye .

(6) Kugenzura ubuziranenge
Kugenzura ubuziranenge bwa Micropowder birimo ibigize imiti, ingano yubunini nibindi bintu. Kuburyo bwubugenzuzi nubuziranenge, nyamuneka reba "Tekiniki ya Silicon Carbide."

(7) Gusya ivumbi
Ifu ya micro imaze guhurizwa hamwe no kugenzurwa, umutwe wibikoresho urashobora gukoreshwa mugutegura ifu yo gusya. Umusaruro wo gusya ifu urashobora kugabanya imyanda no kwagura ibicuruzwa.