Silicon carbide da siliki nitride suna da ƙarancin wettability tare da narkakken ƙarfe. Bayan kasancewar infiltrated da magnesium, nickel, chromium gami da bakin karfe, ba su da wani wettability zuwa sauran karafa, don haka suna da kyakkyawan lalata juriya kuma ana amfani da ko'ina a aluminum electrolysis masana'antu.
A cikin wannan takarda, an bincika juriya na lalata silicon carbide R-SiC da silicon nitride bonded silicon carbide Si3N4-SiC a cikin zazzagewar Al-Si gami da narkewa daga latitudes da yawa.
Dangane da bayanan gwaji na sau 9 na hawan keke na thermal na 1080h a cikin 495 ° C ~ 620 ° C aluminum-silicon gami narke, an sami sakamakon bincike mai zuwa.
Samfurori R-SiC da Si3N4-SiC sun karu tare da lokacin lalata kuma ƙimar lalata ta ragu. Adadin lalata ya dace da alaƙar logarithmic na attenuation. (Hoto na 1)
Ta hanyar nazarin bakan makamashi, samfuran R-SiC da Si3N4-SiC da kansu ba su da aluminum-silicon; a cikin tsarin XRD, wani takamaiman adadin aluminium-silicon kololuwa shine ragowar aluminum-silicon gami. (Hoto na 2 - Hoto na 5)
Ta hanyar bincike na SEM, yayin da lokacin lalata ya karu, tsarin tsarin R-SiC da Si3N4-SiC suna kwance, amma babu lalacewa a fili. (Hoto na 6 - Hoto na 7)
Tashin hankali σs / l> σs / g na tsaka-tsaki tsakanin ruwa na aluminum da yumbura, kusurwar wetting θ tsakanin musaya shine> 90 °, kuma haɗin tsakanin ruwa na aluminum da takardar yumbura ba rigar ba.
Sabili da haka, kayan R-SiC da Si3N4-SiC suna da kyau a cikin juriya na lalata da narke silicon silicon kuma suna da ɗan bambanci. Koyaya, farashin kayan Si3N4-SiC yana da ɗan ƙaramin ƙarfi kuma an sami nasarar amfani dashi tsawon shekaru da yawa.
Lokacin aikawa: Dec-17-2018