Kāore e tino mākū te silicon carbide me te silicon nitride ki te konganuku rewa. Haunga te urunga o te konupūmā, te nikara, te koranu chromium me te maitai kore waikura ki roto, kāore e mākū ki ētahi atu konganuku, nō reira he tino ātete ki te waikura, ā, e whakamahia whānuitia ana i roto i te umanga hiko konumohe.
I roto i tēnei tuhinga, i rangahaua te ātete ki te waikura o te R-SiC silicon carbide kua whakakāhoretia anō me te Si3N4-SiC silicon carbide kua herea ki te silicon nitride i roto i ngā rewa koranu Al-Si e horapa ana i te wera mai i ngā whānuitanga maha.
E ai ki ngā raraunga whakamātautau o te 9 ngā wā o te huringa wera o te 1080h i roto i te 495 ° C ~ 620 ° C konumohe-silicon koranu rewa, i riro mai ngā hua tātari e whai ake nei.
I piki ake ngā tauira R-SiC me Si3N4-SiC i te roanga o te waikura, ā, i heke iho te tere o te waikura. I rite te tere o te waikura ki te whanaungatanga logarithmic o te whakaitiiti. (pikitia 1)
Mā te tātaritanga irahiko pūngao, kāore he konumohe-hirikona i roto i ngā tauira R-SiC me Si3N4-SiC; i roto i te tauira XRD, ko te nui o te tihi konumohe-hirikona ko te koranu konumohe-hirikona toenga-mata. (Pikitia 2 – Pikitia 5)
Mā te tātaritanga SEM, i te pikinga ake o te wā waikura, ka marara te hanganga whānui o ngā tauira R-SiC me Si3N4-SiC, engari kāore he kino e kitea ana. (Pikitia 6 – Pikitia 7)
Ko te mānukanuka mata σs/l>σs/g o te atanga i waenga i te wai konumohe me te uku, ko te koki mākū θ i waenga i ngā atanga he >90°, ā, kāore te atanga i waenga i te wai konumohe me te rauemi uku pepa i te mākū.
Nō reira, he tino pai te ātete o ngā rauemi R-SiC me Si3N4-SiC ki te waikura i te rewa o te konumohe silicon, ā, he iti noa iho te rerekētanga. Heoi, he iti noa te utu o ngā rauemi Si3N4-SiC, ā, kua maha ngā tau e whakamahia ana.
Te wā tuku: Hakihea-17-2018