Sau da yawa ana amfani da graphite crucible wajen samar da kayan ƙarfe da semiconductor. Domin yin kayan ƙarfe da semiconductor su kai wani tsabta da kuma rage yawan ƙazanta, ana buƙatar foda graphite mai yawan carbon da ƙarancin ƙazanta. A wannan lokacin, ya zama dole a cire ƙazanta daga foda graphite yayin sarrafawa. Abokan ciniki da yawa ba su san yadda za su magance ƙazanta a cikin foda graphite ba. A yau, Furuite Graphite Edita zai yi magana dalla-dalla game da shawarwarin cire ƙazanta a cikin foda graphite:
Lokacin samar da foda na graphite, ya kamata mu kula da abubuwan da ke cikin ƙazanta daga zaɓin kayan masarufi, mu zaɓi kayan da ke da ƙarancin toka, kuma mu hana ƙaruwar ƙazanta a cikin tsarin sarrafa foda na graphite. Iskar oxygen na abubuwa da yawa na ƙazanta koyaushe suna ruɓewa kuma suna ƙafewa a yanayin zafi mai yawa, don haka tabbatar da tsarkin foda na graphite da aka samar.
Lokacin samar da samfuran da aka yi wa graphitized gabaɗaya, zafin tsakiyar murhu yana kaiwa kimanin 2300℃ kuma ragowar ƙazanta yana kusan 0.1%-0.3%. Idan zafin tsakiyar murhu ya tashi zuwa 2500-3000℃, yawan ragowar ƙazanta zai ragu sosai. Lokacin samar da samfuran foda na graphite, galibi ana amfani da man fetur coke mai ƙarancin toka azaman kayan juriya da kayan rufi.
Ko da kuwa zafin graphitization ya ƙaru zuwa 2800℃, wasu ƙazanta har yanzu suna da wahalar cirewa. Wasu kamfanoni suna amfani da hanyoyi kamar rage ƙarfin wutar lantarki da ƙara yawan wutar lantarki don fitar da foda graphite, wanda ke rage fitar da wutar lantarki ta graphite kuma yana ƙara yawan wutar lantarki. Saboda haka, lokacin da zafin wutar lantarki ta graphite ya kai 1800℃, ana shigar da iskar gas mai tsabta, kamar chlorine, freon da sauran chlorides da fluorides, kuma ana ci gaba da ƙara shi na tsawon sa'o'i da yawa bayan gazawar wutar lantarki. Wannan don hana ƙazanta da aka tururi ta yaɗu zuwa cikin tanda a akasin haka, da kuma fitar da sauran iskar gas mai tsabta daga ramukan foda graphite ta hanyar shigar da wasu nitrogen.
Lokacin Saƙo: Janairu-06-2023