Haɓaka 5% zuwa 10% (jashi mai yawa) Al2O3 a cikin ɓangaren matrix na fashewar wutar lantarki carbon / tubalin graphite (tubalan carbon) yana haɓaka juriya na ruɓaɓɓen ƙarfe kuma shine aikace-aikacen tubalin carbon carbon aluminium a cikin tsarin ƙarfe. Na biyu kuma, ana amfani da tubalin carbon carbon da aka narkar da shi wajen gyaran ƙarfe da aka narkar da shi da magudanar ruwa.
Aluminum carbon tubalin don narkakken ƙarfe pretreatment
Ana amfani da tubalin carbide na aluminum musamman a cikin kayan aiki don jigilar narkakkar ƙarfe kamar narkakken tankunan ƙarfe. Duk da haka, idan ana amfani da irin wannan nau'in kayan da aka yi amfani da su a cikin manyan tankunan ƙarfe da aka narkar da su da kuma masu haɗin ƙarfe, kuma suna ci karo da yanayin zafi da sanyi, yana da wuyar tsagewa, yana haifar da kwasfa na tsari. Bugu da ƙari, saboda tubalin Al2O3-SiC-C da aka yi amfani da su a cikin manyan tankuna masu zafi da ƙarfe na ƙarfe sau da yawa suna da abun ciki na carbon na 15% da haɓakar thermal kamar 17 ~ 21W / (m · K) (800 ℃), a can. rage zafin narkakkar ƙarfe ne da kuma matsalar nakasar guraben ƙarfe na manyan tankunan ƙarfe na ƙarfe da hada motoci. Ma'auni shine a cimma ƙananan ƙarancin zafin jiki ta hanyar cire SiC, wani ɓangaren da ke da zafi sosai, yayin da rage abun ciki na graphite da kuma tace graphite.
Ta hanyar bincike na asali, an kammala cewa:
(1) Lokacin da abun ciki na graphite (mass juzu'i) a cikin tubalin carbon carbon na aluminium bai wuce 10% ba, tsarin tsarin sa ya ƙunshi Al2O3 yana ƙirƙirar matrix mai ci gaba, kuma an cika carbon a cikin matrix a cikin nau'ikan maki tauraro. A wannan lokacin, da thermal conductivity λ na aluminum carbon tubali za a iya kamar lissafta da dabara (1)
A cikin ma'auni, λa shine ƙaddamarwar thermal na Al2O3; Vc shine juzu'in juzu'i na graphite. Wannan yana nuna cewa ƙarfin wutar lantarki na bulo na carbon carbon ba shi da alaƙa da yanayin zafi na graphite.
(2) Lokacin da graphite aka mai ladabi, da thermal watsin na aluminum carbon tubali yana da ƙasa dogara a kan graphite barbashi.
(3) Don ƙananan tubalin aluminum-carbon carbon, lokacin da aka tace graphite, za a iya samar da matrix mai ɗorewa, wanda zai iya inganta juriya na lalata tubalin aluminum-carbon.
Wannan yana nuna cewa ƙananan tubalin carbon carbon Aluminum na iya daidaitawa da yanayin aiki na manyan tankunan ƙarfe masu zafi da motocin haɗin ƙarfe a cikin tsarin ƙarfe.
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Lokacin aikawa: Fabrairu-27-2024
