I. Silicon carbide tsarin da kaddarorin
Silicon carbide SiC ya ƙunshi silicon da carbon. Yana da wani nau'i na polymorphic na al'ada, musamman ciki har da α-SiC (nau'in barga mai girma) da β-SiC (nau'in kwanciyar hankali). Akwai fiye da 200 polymorphs, daga cikinsu 3C-SiC na β-SiC da 2H-SiC, 4H-SiC, 6H-SiC, da 15R-SiC na α-SiC sun fi wakilci.
Figure SiC polymorph tsarin Lokacin da zafin jiki yana ƙasa da 1600 ℃, SiC yana wanzuwa a cikin nau'i na β-SiC, wanda za'a iya yin shi daga cakuda silicon da carbon a zafin jiki na kusan 1450 ℃. Lokacin da ya fi 1600 ℃, β-SiC sannu a hankali yana canzawa zuwa polymorphs daban-daban na α-SiC. 4H-SiC yana da sauƙin samarwa a kusa da 2000 ℃; 6H da 15R polytypes suna da sauƙin samarwa a yanayin zafi sama da 2100 ℃; 6H-SiC kuma na iya zama barga sosai a yanayin zafi sama da 2200 ℃, don haka ya fi kowa a aikace-aikacen masana'antu. Silikon carbide mai tsafta ba shi da launi kuma crystal bayyananne. Silikon carbide na masana'antu ba shi da launi, rawaya mai haske, kore mai haske, kore mai duhu, shuɗi mai haske, shuɗi mai duhu har ma da baki, tare da matakin bayyana gaskiya yana raguwa bi da bi. Masana'antar Abrasive ta rarraba silicon zuwa kashi biyu a gwargwadon launi: black silicon carbide da kore silicon Carbide. Wadanda ba su da launi zuwa koren duhu ana rarraba su azaman siliki carbide koren, kuma shuɗi mai haske zuwa baƙi an rarraba su azaman siliki carbide na baki. Duk carbide na siliki na baki da silikon carbide kore sune lu'ulu'u na α-SiC hexagonal. Gabaɗaya, yumbu na silicon carbide yana amfani da koren siliki carbide foda azaman albarkatun ƙasa.
2. Silicon carbide yumbu shiri tsari
Silicon carbide yumbu kayan da aka yi ta hanyar murkushe, nika da grading silicon carbide albarkatun kasa don samun SiC barbashi tare da uniform barbashi size rarraba, sa'an nan kuma danna SiC barbashi, sintering Additives da wucin gadi adhesives a cikin wani kore blank, sa'an nan sintering a high zafin jiki. Duk da haka, saboda manyan halayen haɗin gwiwar haɗin gwiwar Si-C (~ 88%) da ƙananan rarrabawar rarrabawa, ɗayan manyan matsaloli a cikin tsarin shirye-shiryen shine wahalar sintering densification. Hanyoyi na shirye-shiryen manyan yumbu na silicon carbide sun haɗa da sintirin amsawa, rashin ƙarfi mara ƙarfi, ƙarancin yanayi, matsi mai zafi, recrystallization sintering, zafi isostatic matsi sintering, spark plasma sintering, da dai sauransu.
Koyaya, yumbu na silicon carbide yana da lahani na ƙarancin karyewar ƙarfi, wato, mafi girma ga ɓarna. A saboda wannan dalili, a cikin 'yan shekarun nan, multiphase yumbu dangane da silicon carbide yumbu, kamar fiber (ko whisker) ƙarfafa, iri-iri barbashi ƙarfafa watsawa da gradient kayan aiki sun bayyana daya bayan daya, inganta tauri da kuma ƙarfi na monomer kayan.
3. Aikace-aikace na silicon carbide yumbura a cikin filin photovoltaic
Silicon carbide yumbura yana da kyakkyawan juriya na lalata, yana iya tsayayya da zaizayar sinadarai, tsawaita rayuwar sabis, kuma ba zai saki sinadarai masu cutarwa ba, wanda ya dace da kariyar muhalli. A lokaci guda, siliki carbide jirgin ruwan goyon baya kuma suna da mafi kyawun fa'idodin farashi. Ko da yake farashin siliki carbide kayan da kansu yana da inganci, tsayin su da kwanciyar hankali na iya rage farashin aiki da mitar sauyawa. A cikin dogon lokaci, suna da fa'idodin tattalin arziki mafi girma kuma sun zama samfuran al'ada a cikin kasuwar tallafin jirgin ruwa na hotovoltaic.
Lokacin da aka yi amfani da yumbu na silicon carbide azaman kayan jigilar kayayyaki a cikin tsarin samar da sel na hotovoltaic, tallafin jirgin ruwa, akwatunan jirgin ruwa, kayan aikin bututu da sauran samfuran da aka yi suna da kwanciyar hankali mai kyau na thermal, ba su da lahani a yanayin zafi mai yawa, kuma ba su da wani gurɓataccen gurɓataccen iska. Za su iya maye gurbin goyan bayan kwale-kwalen quartz da aka saba amfani da su, akwatunan jirgin ruwa, da kayan aikin bututu, kuma suna da fa'idodin tsada. Silicon carbide na goyon bayan jirgin ruwa an yi su da siliki carbide a matsayin babban abu. Idan aka kwatanta da goyan bayan kwale-kwalen ma'adini na gargajiya, tallafin kwale-kwalen siliki carbide yana da mafi kyawun yanayin zafi kuma yana iya kiyaye kwanciyar hankali a cikin yanayin zafi mai girma. Silicon carbide jirgin ruwan yana goyan bayan yin aiki da kyau a cikin yanayin zafi mai zafi kuma zafi ba zai iya shafan su cikin sauƙi ba da gurɓatacce ko lalacewa. Sun dace da matakan samarwa da ke buƙatar maganin zafin jiki mai zafi, wanda ya dace don kiyaye kwanciyar hankali da daidaito na tsarin samarwa.
Rayuwar sabis: Dangane da nazarin rahoton bayanan: Rayuwar sabis na yumbu na silicon carbide ya fi sau 3 fiye da na tallafin jirgin ruwa, akwatunan jirgin ruwa, da kayan aikin bututun da aka yi da kayan quartz, wanda ke rage saurin maye gurbin kayan masarufi.
Lokacin aikawa: Oktoba-21-2024