Ecaleni kwe-oven ye-1000 ℃, kwinkqubo yokucoca i-sulfurization yokukhusela okusingqongileyo kwimizi-mveliso, nangaphakathi kwezixhobo zokukhanya ezichanekileyo, kusoloko kukho into ekwaziyo ukumelana novavanyo lobushushu obugqithisileyo - yiyo leyoiiseramikhi zesilicon carbideeyaziwa ngokuba yi "igolide emnyama yemizi-mveliso". Njengezinto ezibalulekileyo kwicandelo lemizi-mveliso yanamhlanje, iimpawu zobushushu ezibonakaliswa yi-silicon carbide ceramics ziphinda zichaze ukuqonda kwabantu ngezinto ezishushu kakhulu.
1, 'Umzila okhawulezayo' wokuqhuba ubushushu
Iiceramics ze-silicon carbide zinomoya wokushisa ofana nowesinyithi, kwaye umbane wokushisa ungaphezulu kaninzi kunezixhobo eziqhelekileyo ze-ceramic. Olu mbane wokushisa ukhethekileyo lubangelwa ziiathom ze-silicon carbon ezibekwe ngokuqinileyo kwisakhiwo sazo sekristale, ezenza imijelo yokuqhuba ubushushu esebenzayo. Xa ubushushu budluliselwa ngaphakathi kwezinto, kufana nesithuthi esiqhuba kwindlela engaphazanyiswa, esinokusasaza ubushushu ngokukhawuleza nangokulinganayo, siphephe iingozi zokhuseleko ezibangelwa kukushisa kakhulu kwendawo.
2, Ubude obude kwiindawo ezinobushushu obuphezulu
Kwiqondo lobushushu eliphezulu kakhulu le-1350 ℃, uninzi lwezinto zesinyithi sele zithambile kwaye ziguqukile, ngelixa ii-silicon carbide ceramics zisenokugcina ukuqina kwesakhiwo. Olu xhathiso lubalaseleyo lobushushu obuphezulu luvela kwi-covalent bonding eqinileyo ngaphakathi kwezinto, njengokwakha inqaba encinci engenakutshabalaliswa. Okungaqhelekanga ngakumbi kukuba kwiindawo ze-oxidation zobushushu obuphezulu, umaleko okhuselayo we-silica omninzi uyenzeka kumphezulu wawo, wenza "ikhaka lokukhusela" lendalo.
3, 'Ukumkani Wokunyamezela' weMfazwe Yokunyamezela Ubushushu Obuphezulu
Kumdyarho we-marathon wobushushu obuphezulu obuqhubekayo, izinto ezininzi zifumana ukuwohloka kokusebenza ngenxa yokufudumeza ixesha elide, ngelixa ii-silicon carbide ceramics ezisebenzisa i-reaction sintered zibonisa ukuqina okumangalisayo. Imfihlo ikwindlela eyahlukileyo yoyilo lwe-grain boundary - isakhiwo senethiwekhi esinemilinganiselo emithathu esenziwe ngetekhnoloji ye-reaction sintering, efana nokuncamathisela izigidi zee-"anchor points" ezincinci kwizinto. Nokuba emva kweeyure ezingamawaka zokubhaka ngobushushu obuphezulu, isenokuvala uzinzo lwesakhiwo esincinci. Olu phawu lwenza kube lolona khetho lulungileyo lokutshintsha izinto zesinyithi zendabuko kwiimeko ezifana nee-roller eziqhubekayo kwishishini le-metallurgical kunye nezinto ezithwala umthwalo obushushu obuphezulu kwizixhobo zeekhemikhali. Itolika oko kuthethwa "ngubushushu obuphezulu obungafi" ngokuthi "amandla aqinileyo".
Xa isixhobo sakho sifuna ukujongana nemida yobushushu, iiceramics ze-silicon carbide ezisebenzisa i-reaction sintered zinokuba 'ngumlawuli wobushushu' othembekileyo. Njengomsebenzi weshishini ogxile kubuchwepheshe bokunyibilikisa i-reaction,Shandong Zhongpengisebenzisa ubuchwepheshe obahlukeneyo obunelungelo lomenzi ukuphucula amandla oomatshini kunye nokusebenza kakuhle kokucubungula izinto ngelixa igcina iipropati ezishushu ezintle. Olu phuculo lobuchwepheshe alunciphisi nje kuphela iindleko zemveliso, kodwa lukwabonisa amathuba abanzi okusetyenziswa kweeseramikhi ze-silicon carbide kwiindawo zoshishino ezisakhulayo.
Ixesha leposi: Meyi-16-2025