Silicon carbide nesilicon nitride hazvina kunyorova zvakanaka kana zvikasanganiswa nesimbi yakanyungudutswa. Kunze kwekunge zvichipinzwa nemagnesium, nickel, chromium alloy uye simbi isingatsvedzeri, hazvina kunyorova zvakanyanya kana zvichienzaniswa nedzimwe simbi, saka zvine simba rekudzivirira ngura uye zvinoshandiswa zvakanyanya muindasitiri ye electrolysis yealuminium.
Muchinyorwa chino, kuramba kwesimbi yesilicon carbide yakadzokororwa inonzi R-SiC uye silicon nitride bonded silicon carbide Si3N4-SiC muAl-Si alloy melts inoyerera nekupisa kwakaongororwa kubva munzvimbo dzakasiyana-siyana.
Zvichienderana nedata rekuyedza renguva pfumbamwe dzekutenderera kwekupisa kwe1080h mu495 ° C ~ 620 ° C aruminiyamu-silicon alloy melt, mhedzisiro inotevera yekuongorora yakawanikwa.
Sampuli dzeR-SiC neSi3N4-SiC dzakawedzera nekufamba kwenguva yekuora uye mwero wekuora wakadzikira. Mwero wekuora waienderana nehukama hwelogarithmic hwekudzikira. (Mufananidzo 1)
Nekuongorora simba remagetsi, sampuli dzeR-SiC neSi3N4-SiC pachadzo hadzina aluminium-silicon; mu XRD pattern, huwandu hwakati hwe aluminium-silicon peak ndiyo surface-residual aluminium-silicon alloy. (Mufananidzo 2 - Mufananidzo 5)
Kuburikidza neongororo yeSEM, sezvo nguva yekuora ichiwedzera, chimiro chose chemasampuli eR-SiC neSi3N4-SiC hachina kurongeka, asi hapana kukuvara kuri pachena. (Mufananidzo 6 - Mufananidzo 7)
Kusimba kwepamusoro σs/l>σs/g kwenzvimbo iri pakati pearuminiyamu mvura neceramic, kona yekunyorovesa θ pakati penzvimbo iri >90°, uye nzvimbo iri pakati pearuminiyamu mvura ne sheet ceramic material haina kunyorova.
Saka, zvinhu zveR-SiC neSi3N4-SiC zvakanaka kwazvo mukudzivirira ngura kubva kualuminium silicon melt uye hazvina musiyano mukuru. Zvisinei, mutengo wezvinhu zveSi3N4-SiC wakaderera uye wave uchishandiswa zvinobudirira kwemakore mazhinji.
Nguva yekutumira: Zvita-17-2018