Silicon carbide na silicon nitride anaghị amị mmiri nke ọma site na ígwè gbazere agbaze. E wezụga magnesium, nickel, chromium alloy na ígwè anaghị agba nchara na-abanye n'ime ha, ha enweghị ike ịgba mmiri na ọla ndị ọzọ, yabụ ha nwere ezigbo iguzogide nchara ma na-ejikarị ha eme ihe n'ụlọ ọrụ eletriki aluminum.
N'akwụkwọ a, e nyochachara nguzogide nchara nke R-SiC na silicon nitride boned silicon carbide Si3N4-SiC na Al-Si alloy melts na-agbagharị ọkụ site na ọtụtụ latitudes.
Dịka data nnwale nke ugboro 9 nke okirikiri okpomọkụ nke 1080h na 495 ° C ~ 620 ° C aluminum-silicon alloy gbazee, enwetara nsonaazụ nyocha ndị a.
Ihe nlele R-SiC na Si3N4-SiC mụbara ka oge nchara na-agbawa agbawa, ọnụego nchara na-agbawa agbawa. Ọnụego nchara kwekọrọ na mmekọrịta logarithmic nke mbelata. (foto 1)
Site na nyocha ike, ihe nlele R-SiC na Si3N4-SiC n'onwe ha enweghị aluminum-silicon; na usoro XRD, ọnụọgụ ụfọdụ nke elu aluminom-silicon bụ ihe fọdụrụ na aluminum-silicon alloy. (Foto 2 - Foto 5)
Site na nyocha SEM, ka oge nchara na-abawanye, nhazi zuru oke nke ihe nlele R-SiC na Si3N4-SiC na-adị mfe, mana enweghị mmebi doro anya. (Foto 6 - Foto 7)
Nrụgide elu σs/l>σs/g nke njikọ dị n'etiti mmiri aluminom na seramiiki, akụkụ mmiri mmiri θ dị n'etiti njikọ ahụ bụ >90°, njikọ dị n'etiti mmiri aluminom na ihe seramiiki mpempe akwụkwọ adịghị mmiri mmiri.
Ya mere, ihe R-SiC na Si3N4-SiC dị mma nke ukwuu n'iguzogide nchara megide agbaze silicon aluminom ma nwee obere ọdịiche. Agbanyeghị, ọnụ ahịa ihe Si3N4-SiC dị obere ma ejiri ya mee ihe nke ọma ruo ọtụtụ afọ.
Oge ozi: Disemba-17-2018