Silicon carbide thiab silicon nitride muaj cov tsis zoo wettability nrog molten hlau. Dhau li yog infiltrated los ntawm magnesium, npib chromium alloy thiab yog qhov siv tau ntawm kev lag luam hauv kev lag luam ntawm cov roj ntsha tsis zoo.
Hauv daim ntawv no, kev xeb tsis kam ntawm recrystallized silicon carbide r-sic thiab silicon nitride al-Si alleoy melts tau tshawb xyuas los ntawm ntau yam latitudes.
Raws li cov ntaub ntawv sim ntawm 9 lub sijhawm ntawm kev caij luv thij ntawm 1080H hauv 495 ° C ~ 620 ° C Txhuas Alloy yaj, cov txiaj ntsig hauv qab no tau txais.
Cov R-Sic thiab SI3N4-Sic tau nce ntxiv nrog lub sijhawm corrosion thiab tus nqi corrosion tsawg zuj zus. Cov neeg corrosion accorded nrog cov logarithmic kev sib raug zoo ntawm kev ua haujlwm. (Daim duab 1)
Los ntawm kev ntsuas hluav taws xob pom zoo, R-Sic thiab SI3N4-Sic ua rau lawv tsis muaj aluminium-silicon; Hauv XRD qauv, qee qhov nqi ntawm aluminium ncov lub ncov yog lub npoo-residual aluminium-silicon alloy. (Daim duab 2 - Daim duab 5)
Los ntawm sum kev tsom xam, raws li lub sijhawm corrosion nce, cov qauv txheej txheem ntawm R-Sic thiab Si3N4-Sic tau xoob, tab sis tsis muaj kev puas tsuaj. (Daim Duab 6 - Daim duab 7)
Lub nro nro σs / g> σs / g ntawm lub sib txuam ntawm cov kua thiab cov ceramic, thiab cov ntawv ntub ntawm cov kua txhuas thiab cov ntaub ntawv tej hub tsis ntub.
Yog li ntawd, R-Sic thiab Si3N4-si cov ntaub ntawv yog tau zoo heev nyob rau hauv corrosion tsis kam tawm tsam txhuas silicing thiab muaj me ntsis sib txawv. Txawm li cas los xij, tus nqi ntawm Si3N4-cov ntaub ntawv Si34-sil yog qhov tsawg thiab tau ua tiav zoo rau ntau xyoo.
Lub Sijhawm Post: Dec-17-2018