[Taƙaitaccen bayanin] Matsin yanayi ya ratsasiliki carbideCarbide ba karfe ba ne mai hade da silicon da carbon covalent bonds, kuma taurinsa bai wuce lu'u-lu'u da boron carbide ba. Tsarin sinadaran shine SiC. Lu'ulu'u marasa launi, shuɗi da baƙar fata a bayyanar lokacin da oxidized ko dauke da ƙazanta.
Matsin yanayi ya karkatasiliki carbideCarbide mara ƙarfe ba tare da silicon da carbon covalent bond ba, kuma taurinsa shine na biyu kawai daga lu'u-lu'u da boron carbide. Tsarin sinadaran shine SiC. Lu'ulu'u marasa launi, shuɗi da baƙar fata a bayyanar lokacin da oxidized ko dauke da ƙazanta. Nakasar dasiliki carbidetare da tsarin lu'u-lu'u ana kiransa emery gabaɗaya. Taurin emery yana kusa da lu'u-lu'u, kyakkyawan kwanciyar hankali mai zafi, kwanciyar hankali ga maganin ruwa na hydroxy acid da sulfuric acid mai tattarawa, da rashin kwanciyar hankali ga gauraye acid ko phosphoric acid na hydrogen acid da nitric acid. Alkalin da ke narkewa a cikin yanayi mara kyau ya bambanta. An raba shi zuwa robasiliki carbideda siliki carbide na halitta. Silicon carbide na halitta, wanda aka sani da carbonite, ana samunsa galibi a cikin kimberlite da amphibolite volcanic, amma adadinsa kaɗan ne kuma ba shi da ƙimar tono.
Matsalolin yanayi na masana'antu sun ruɗesiliki carbideCakuda ne na -SiC da -SiC kuma ya zo cikin launuka biyu: baki da kore. Silikon carbide mai tsafta ba shi da launi, mai ɗauke da ƙazanta baƙi ne, kore, shuɗi, rawaya. Iyakar hatsi na hexagonal da cubic, crystal shine farantin karfe, ginshiƙin fili. Gilashin gilashi, yawa 3.17-3.47G / CM3, taurin Morse 9.2, microscope kuma a 30380 ~ 33320MPa narkewa: yanayi 2050 ya fara bambanta, yanayin dawowa 2600 ya fara bambanta. Matsakaicin ƙira shine 466, 480MPa. Ƙarfin ƙarfi shine 171.5MPa. Ƙarfin matsawa shine 1029MPa. Matsakaicin haɓakar haɓakar layin layi shine (25 ~ 1000) 5.010 ~ 6/, kuma ƙimar thermal (20) shine 59w / (mk). Kwanciyar hankali, tafasa a cikin HCI, H2SO4, HF ba zai rushe ba.
Dangane da amfani daban-daban, matsa lamba na sinadari siliki siliki an raba shi zuwa abrasive, bayanan karyatawa, deoxidizer, silicon carbide na lantarki da sauransu. Abubuwan da ke cikin SiC na silicon carbide abrasive ba zai zama ƙasa da 98%. Refractories tare da silicon carbide an kasu kashi: (1) ci-gaba refractory data baki silicon carbide, SiC abun ciki daidai da nika silicon carbide. (2) Bayanin refractory na siliki baƙar fata, abun ciki na SiC na sama da 90%. (3) Abubuwan da ke cikin siliki carbide baƙar fata da SiC a cikin ƙananan ƙarancin ƙima baya ƙasa da 83%. Abubuwan da ke cikin silicon carbide da SiC da ake amfani da su a cikin deoxidizer ana buƙatar gabaɗaya sama da 90%. Duk da haka, carbon masana'antu graphitization tanderu rufi, silicon carbide abun ciki na fiye da 45% na magani kuma za a iya amfani da a matsayin karfe deoxidizer. Silicon carbide don deoxidizing wakili yana da nau'ikan nau'ikan foda iri biyu da toshe gyare-gyare. Foda deoxidizer baki silicon carbide gabaɗaya yana da girman barbashi na 4 ~ 0.5 mm da 0.5 ~ 0.1 mm. Silicon carbide mai amfani da wutar lantarki yana da manyan nau'ikan nau'ikan biyu. (1) Koren silicon carbide da ake amfani da shi don abubuwan dumama wutar lantarki daidai yake da koren silicon carbide da ake amfani da shi don niƙa. (2) Silicon carbide don mai kama yana da buƙatun aikin lantarki na musamman, wanda ya bambanta da baƙar fata silicon carbide don niƙa bayanan karyatawa.
Amfani da matsa lamba na yanayi sintered silicon carbide
Samfuran siliki na carbide mai matsa lamba na yanayi suna da ayyuka na musamman kamar juriya mai tsayi, juriya, juriya mai zafi, juriya na wuta, juriya na radiation, kyakkyawan yanayin wutar lantarki da thermal, da sauransu, kuma an yi amfani da su sosai a sassa daban-daban na tattalin arzikin ƙasa. A kasar Sin, koren siliki carbide ana amfani da shi azaman abin goge baki. Ana amfani da baƙar fata siliki carbide don yin duwatsun niƙa, waɗanda galibi ana amfani da su don yankewa da niƙa kayan da ba su da ƙarfi, kamar gilashi, yumbu, dutse, refractories, har ma don niƙa sassan ƙarfe da kayan ƙarfe mara ƙarfe. Nika da aka yi da koren siliki carbide galibi ana amfani da shi don niƙa simintin carbide, gami da titanium, gilashin gani, da kuma niƙa na silinda da kayan aikin ƙarfe mai sauri. Ana amfani da abrasives na silikon carbide mai Cubic don ingantacciyar niƙa na ƙananan bearings. Za a iya inganta juriya na juriya na turbine impellers ta amfani da SIC foda a kansu ta hanyar lantarki. Yin amfani da matsa lamba na inji don tura SiC200 mai siffar sukari da kuma W28 micro-foda zuwa bangon silinda na injin konewa na ciki, rayuwar silinda na iya ninka fiye da ninki biyu.
Lokacin aikawa: Oktoba-11-2023