Daidaita Al2O3 daga 5% zuwa 10% (ƙasa mai yawa) a cikin ɓangaren matrix na tubalin carbon/graphite na tanderun fashewa (tubalan carbon) yana inganta juriyar tsatsa na ƙarfe mai narkewa sosai kuma aikace-aikacen tubalin carbon na aluminum ne a cikin tsarin yin ƙarfe. Na biyu, ana amfani da tubalin carbon na aluminum a cikin gyaran ƙarfe na ƙarfe da kuma magudanar ruwa.
Tubalin carbon na aluminum don yin maganin ƙarfe mai narkewa kafin a fara amfani da shi
Ana amfani da tubalin silikon carbide na aluminum galibi a cikin kayan aiki don jigilar ƙarfe mai narkewa kamar tankunan ƙarfe mai narkewa. Duk da haka, idan aka yi amfani da wannan nau'in kayan da ba ya jurewa a cikin manyan tankunan ƙarfe da mahaɗan ƙarfe, kuma aka fuskanci yanayi mai zafi da sanyaya, yana da saurin fashewa, wanda ke haifar da barewa. Bugu da ƙari, saboda tubalin Al2O3-SiC-C da ake amfani da su a cikin manyan tankunan ƙarfe masu zafi da mahaɗan ƙarfe galibi suna da abun ciki na carbon na 15% da kuma ikon watsa zafi har zuwa 17 ~ 21W/(m·K) (800℃), akwai raguwar zafin ƙarfe mai narkewa da matsalar lalata zanen ƙarfe na manyan tankunan ƙarfe da mahaɗan motoci. Ma'aunin da za a iya ɗauka shi ne a cimma ƙarancin ƙarfin watsa zafi ta hanyar cire SiC, wani abu mai saurin watsa zafi, yayin da ake rage yawan graphite da kuma tsaftace graphite.
Ta hanyar bincike na asali, an kammala da cewa:
(1) Idan abun da ke cikin graphite (ƙasa da yawa) a cikin tubalin carbon na aluminum ya ƙasa da kashi 10%, tsarin ƙungiyarsa ya ƙunshi Al2O3 wanda ke samar da matrix mai ci gaba, kuma ana cika carbon a cikin matrix a cikin nau'in wuraren taurari. A wannan lokacin, ana iya ƙididdige matsakaicin zafin λ na tubalin carbon na aluminum ta hanyar dabara (1)
A cikin dabarar, λa shine ƙarfin wutar lantarki na Al2O3; Vc shine ƙaramin juzu'in graphite. Wannan yana nuna cewa ƙarfin wutar lantarki na tubalin carbon na aluminum ba shi da alaƙa da ƙarfin wutar lantarki na graphite.
(2) Idan aka tsaftace graphite, ƙarfin zafin tubalin carbon na aluminum ba ya dogara da ƙwayoyin graphite.
(3) Ga tubalin aluminum-carbon mai ƙarancin carbon, lokacin da aka tsaftace graphite, za a iya samar da matrix mai kauri, wanda zai iya inganta juriyar tsatsa na tubalin aluminum-carbon.
Wannan ya nuna cewa tubalin carbon mai ƙarancin carbon A na aluminum zai iya daidaitawa da yanayin aiki na manyan tankunan ƙarfe masu zafi da motocin haɗa ƙarfe a cikin tsarin yin ƙarfe.
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Lokacin Saƙo: Fabrairu-27-2024
