Silicon carbide da silicon nitride ba su da isasshen danshi idan aka yi amfani da ƙarfe mai narkewa. Bayan magnesium, nickel, chromium gami da bakin ƙarfe suna shiga cikinsu, ba su da danshi ga sauran ƙarfe, don haka suna da kyakkyawan juriya ga tsatsa kuma ana amfani da su sosai a masana'antar lantarki ta aluminum.
A cikin wannan takarda, an binciki juriyar tsatsa na R-SiC da aka sake yin amfani da su wajen sake yin amfani da silicon carbide Si3N4-SiC a cikin narkewar ƙarfe mai zafi na Al-Si daga wurare daban-daban.
Bisa ga bayanan gwaji na sau 9 na zagayowar zafi na awanni 1080 a cikin 495 ° C ~ 620 ° C narkar da ƙarfen aluminum-silicon, an sami sakamakon bincike mai zuwa.
Samfuran R-SiC da Si3N4-SiC sun ƙaru tare da lokacin tsatsa kuma ƙimar tsatsa ta ragu. Yawan tsatsa ya yi daidai da dangantakar logarithmic na raguwar. (hoto na 1)
Ta hanyar nazarin ƙarfin lantarki, samfuran R-SiC da Si3N4-SiC kansu ba su da aluminum-silicon; a cikin tsarin XRD, wani adadin kololuwar aluminum-silicon shine ragowar aluminum-silicon na saman. (Hoto na 2 - Hoto na 5)
Ta hanyar nazarin SEM, yayin da lokacin tsatsa ke ƙaruwa, tsarin gabaɗaya na samfuran R-SiC da Si3N4-SiC ya lalace, amma babu wata illa da ta bayyana. (Hoto na 6 - Hoto na 7)
Tashin hankali na saman σs/l>σs/g na haɗin tsakanin ruwan aluminum da yumbu, kusurwar jika θ tsakanin haɗin shine >90°, kuma haɗin da ke tsakanin ruwan aluminum da kayan yumbu na takarda ba shi da ruwa.
Saboda haka, kayan R-SiC da Si3N4-SiC suna da kyau wajen jure wa tsatsa daga narkewar silicon na aluminum kuma ba su da bambanci sosai. Duk da haka, farashin kayan Si3N4-SiC yana da ƙasa kaɗan kuma an yi amfani da shi cikin nasara tsawon shekaru da yawa.
Lokacin Saƙo: Disamba-17-2018