Lu'ulu'u ɗaya na SiC wani abu ne na semiconductor mai haɗin gwiwa na Rukunin IV-IV wanda ya ƙunshi abubuwa biyu, Si da C, a cikin rabon stoichiometric na 1: 1. Taurinsa ya fi lu'u-lu'u.
Rage carbon ta hanyar silicon oxide don shirya SiC ya dogara ne akan tsarin sinadaran da ke ƙasa:
Tsarin amsawar rage sinadarin silicon oxide yana da sarkakiya, wanda zafin amsawar ke shafar samfurin ƙarshe kai tsaye.
A cikin tsarin shirya silicon carbide, ana fara sanya kayan da aka yi amfani da su a cikin tanderu mai juriya. Tanderu mai juriya ta ƙunshi bangon ƙarshe a ƙarshen biyu, tare da electrode graphite a tsakiya, kuma tsakiyar tanderu ta haɗu da electrodes guda biyu. A gefen tsakiyar tanderu, ana fara sanya kayan da aka yi amfani da su a cikin amsawar, sannan a sanya kayan da ake amfani da su don kiyaye zafi a gefen. Lokacin da narkewar ya fara, ana kunna tanderu mai juriya kuma zafin ya tashi zuwa digiri 2,600 zuwa 2,700 na Celsius. Ana canja wutar lantarki zuwa cajin ta saman tsakiyar tanderu, wanda ke sa a yi zafi a hankali. Lokacin da zafin cajin ya wuce digiri 1450 na Celsius, ana samun amsawar sinadarai don samar da silicon carbide da iskar carbon monoxide. Yayin da aikin narkewar ya ci gaba, yankin zafi mai yawa a cikin cajin zai faɗaɗa a hankali, kuma adadin silicon carbide da aka samar shi ma zai ƙaru. Silicon carbide yana ci gaba da samuwa a cikin tanderu, kuma ta hanyar ƙafewa da motsi, lu'ulu'u suna girma a hankali kuma daga ƙarshe suna taruwa zuwa lu'ulu'u masu silinda.
Wani ɓangare na bangon ciki na lu'ulu'u ya fara ruɓewa saboda yawan zafin da ya wuce digiri 2,600 na Celsius. Sinadarin silicon da aka samar ta hanyar ruɓewa zai sake haɗuwa da sinadarin carbon da ke cikin chajin don samar da sabon silicon carbide.
Idan aka kammala aikin sinadarai na silicon carbide (SiC) kuma tanderun ya yi sanyi, mataki na gaba zai iya farawa. Da farko, an wargaza bangon tanderun, sannan aka zaɓi kayan da ke cikin tanderun kuma aka tsara su bisa ga tsari. Ana niƙa kayan da aka zaɓa don samun kayan da muke so. Na gaba, ana cire ƙazanta a cikin kayan ta hanyar wanke ruwa ko tsaftacewa da maganin acid da alkali, da kuma rabuwar maganadisu da sauran hanyoyi. Ana buƙatar a busar da kayan da aka tsaftace sannan a sake tantance su, kuma a ƙarshe ana iya samun foda mai tsabta na silicon carbide. Idan ya cancanta, ana iya ƙara sarrafa waɗannan foda bisa ga ainihin amfani, kamar siffatawa ko niƙa mai kyau, don samar da foda mai kyau na silicon carbide.
Takamaiman matakai sune kamar haka:
(1) Kayan danye
Ana samar da ƙaramin foda na silicon carbide mai launin kore ta hanyar niƙa ƙaramin silikon carbide mai launin kore. Ya kamata sinadarin silicon carbide ya fi kashi 99%, kuma babu carbon da iron oxide a ciki ya kamata ya zama ƙasa da kashi 0.2%.
(2) An karya
Don niƙa yashi mai siffar silicon carbide zuwa foda mai laushi, ana amfani da hanyoyi guda biyu a halin yanzu a ƙasar Sin, ɗaya ita ce niƙa niƙa mai laushi a lokaci-lokaci, ɗayan kuma ita ce niƙa ta amfani da injin niƙa foda mai iska.
(3)Rabuwar maganadisu
Ko da wace hanya ake amfani da ita don niƙa foda na silicon carbide zuwa foda mai laushi, yawanci ana amfani da rabuwar maganadisu mai danshi da rabuwar maganadisu ta inji. Wannan saboda babu ƙura a lokacin rabuwar maganadisu mai danshi, kayan maganadisu suna rabuwa gaba ɗaya, samfurin bayan rabuwar maganadisu yana ɗauke da ƙarancin ƙarfe, kuma foda na silicon carbide da kayan maganadisu ke ɗaukewa suma ba su da yawa.
(4)Rabuwar ruwa
Babban ƙa'idar hanyar raba ruwa ita ce amfani da saurin daidaitawa daban-daban na barbashi masu diamita daban-daban a cikin ruwa don yin rarrabuwar girman barbashi.
(5) Nunin Ultrasonic
Tare da haɓaka fasahar ultrasonic, an kuma yi amfani da shi sosai a cikin gwajin ultrasonic na fasahar micro-foda, wanda zai iya magance matsalolin tantancewa kamar shaƙar ƙarfi, sauƙin haɗuwa, wutar lantarki mai ƙarfi, ƙarancin haske, yawan yawa, da nauyi na musamman.
(6) Duba inganci
Duba ingancin Micropowder ya haɗa da sinadaran da aka haɗa, girman barbashi da sauran abubuwa. Don hanyoyin dubawa da ƙa'idodin inganci, da fatan za a duba "Yanayin Fasaha na Silicon Carbide."
(7) Samar da ƙurar niƙa
Bayan an haɗa ƙananan foda ɗin kuma an tantance su, ana iya amfani da kan kayan don shirya foda niƙa. Samar da foda niƙa na iya rage ɓarna da faɗaɗa sarkar samfurin.
Lokacin Saƙo: Mayu-13-2024