ʻAʻole palupalu ka silicone carbide a me ka silicon nitride me ka metala hoʻoheheʻe ʻia. Ma waho aʻe o ka komo ʻana o ka magnesium, nickel, chromium alloy a me ke kila kila, ʻaʻohe o lākou palupalu i nā metala ʻē aʻe, no laila he kūpaʻa maikaʻi loa ko lākou i ka pala a hoʻohana nui ʻia i ka ʻoihana electrolysis alumini.
Ma kēia pepa, ua noiʻi ʻia ke kūpaʻa ʻana o ka silicon carbide R-SiC i hoʻopili hou ʻia a me ka silicon carbide Si3N4-SiC i hoʻopaʻa ʻia me ka silicon nitride i loko o nā mea hoʻoheheʻe Al-Si e hoʻopuni wela ana mai nā latitudes he nui.
Wahi a ka ʻikepili hoʻokolohua o 9 mau manawa o ka paikikala wela o 1080h ma 495 ° C ~ 620 ° C alumini-silicon alloy heheʻe, ua loaʻa nā hopena loiloi ma lalo nei.
Ua piʻi aʻe nā laʻana R-SiC a me Si3N4-SiC me ka manawa pala a ua emi ka nui o ka pala. Ua kūlike ka nui o ka pala me ka pilina logarithmic o ka attenuation. (kiʻi 1)
Ma ka nānā ʻana i ka spectrum ikehu, ʻaʻohe aluminum-silicon o nā laʻana R-SiC a me Si3N4-SiC iho; ma ke ʻano XRD, ʻo kahi nui o ka piko aluminum-silicon ka mea hoʻohuihui aluminum-silicon koena o ka ʻili. (Kiʻi 2 - Kiʻi 5)
Ma o ka loiloi SEM, i ka piʻi ʻana o ka manawa pala, ua palupalu ke ʻano holoʻokoʻa o nā laʻana R-SiC a me Si3N4-SiC, akā ʻaʻohe pōʻino maopopo. (Kiʻi 6 - Kiʻi 7)
ʻO ke kaomi ʻili σs/l>σs/g o ka pilina ma waena o ka wai alumini a me ka keramika, ʻo ke kihi pulu θ ma waena o nā pilina he >90°, a ʻaʻole pulu ka pilina ma waena o ka wai alumini a me ka mea keramika pepa.
No laila, ʻoi aku ka maikaʻi o nā mea R-SiC a me Si3N4-SiC i ke kūpaʻa ʻana i ka pala i ka hoʻoheheʻe ʻana o ka silicon alumini a he liʻiliʻi ka ʻokoʻa. Eia nō naʻe, he haʻahaʻa ke kumukūʻai o nā mea Si3N4-SiC a ua hoʻohana pono ʻia no nā makahiki he nui.
Ka manawa hoʻouna: Dec-17-2018