Halayen Tsarin Kayan Aluminum Foam

Aluminum kumfa ya ƙunshi wanialuminum karfematrix abu da kuma pores. Siffofin tsarin kumfa na aluminum sun haɗa da diamita na pore, porosity ko density na dangi, pore roundness, da takamaiman yanki. Haɗin kai tsakanin sifofin pore ana iya rarraba su azaman buɗaɗɗen kumfa aluminum darufaffiyar-cell aluminum kumfa, Rarraba raƙuman ruwa na aluminum kumfa yawanci bazuwar, amma ƙayyadaddun matakai na iya cimma tsarin rarraba. Siffar pores na iya zama tsarin rufaffiyar tantanin halitta, tsarin buɗaɗɗen tantanin halitta, ko cakuda duka biyun. Pores nabude-cell aluminum kumfaan haɗa su, yayin da pores na rufaffiyar kumfa aluminum mai zaman kanta kuma sun rabu da juna don a iya ɗaukar kumfa na aluminum a matsayin wani abu mai mahimmanci na nau'i biyu: matrix aluminum da pores. Tsarin rufaffiyar tantanin halitta: bangon ramuka yana rufe da juna gaba daya, kuma iskar gas tana nannade cikin ramuka, wanda ke da tasirin sauti mai kyau da yanayin zafi kuma ana amfani da shi a cikin shayarwar makamashi, rigakafin karo, da sauran fannoni. Tsarin buɗaɗɗen tantanin halitta: an haɗa bangon ramuka, tare da kyakkyawar iska mai ƙarfi da haɓakar ruwa, dacewa da tacewa, ɓarkewar zafi, da sauran al'amura. Tun da sigogin tsarin tsarin kumfa na aluminum kai tsaye suna ƙayyade aikin kumfa na aluminum, a cikin aikace-aikacen aikace-aikacen, kayan kumfa na aluminum tare da sigogi masu dacewa ya kamata a zaba bisa ga aikace-aikace daban-daban. Idan aka kwatanta da kayan ƙarfe na gargajiya, kumfa aluminum yana da girman girman pore (girman pore D = 0.2 mm zuwa 8 mm), babban porosity (porosity 63% zuwa 90%), da ƙananan yawa. Tsarin kwarangwal naaluminum kumfayana nuna rabe-raben reticular mai girma uku, wanda ya ƙunshi sassa masu ƙarfi na gami da aluminum. Wannan reticulation yana ba wa kayan kyawawan kaddarorin inji, kamar ƙayyadaddun ƙarfi na musamman da haɓakar kuzari mai kyau. Fuskokin waje na kumfa aluminum yawanci m tare da bayyane pores, amma saman ingancin za a iya inganta ta bayan-jiyya (misali, shafi, machining).

Gabaɗaya, sifofin tsarin kumfa na aluminum sune porosity, nauyi mai nauyi da ƙarfin ƙarfi, da kwarangwal mai tsintsiya mai girma uku. Waɗannan kaddarorin tsarin suna ƙayyade aikace-aikacen sa mai fa'ida a cikin fagagen ƙarar sauti da murhun zafi, ɗaukar makamashi, juriyar tasiri, tacewa, da gini mai nauyi.

Halayen tsarin tsarin aluminum mai kumfa: (a) aluminum mai kumfa mai buɗaɗɗen tantanin halitta; (b) aluminum mai kumfa mai kumfa