Silinda mai matsin lamba a yanayi carbide ne wanda ba na ƙarfe ba wanda ke da haɗin silicon da carbon covalent, kuma taurinsa yana biye da lu'u-lu'u da boron carbide. Tsarin sinadarai shine SiC. Lu'ulu'u marasa launi, shuɗi da baƙi a bayyanar lokacin da aka yi oxidized ko ya ƙunshi ƙazanta. Nauyin silicon carbide tare da tsarin lu'u-lu'u gabaɗaya ana kiransa emery. Taurin emery yana kusa da lu'u-lu'u, kwanciyar hankali mai kyau na zafi, ruwan ruwa mai ƙarfi zuwa hydroxy acid da sinadarin sulfuric acid mai ƙarfi, kuma ba shi da tabbas ga gaurayen acid ko phosphoric acid na hydrogen acid mai ƙarfi da nitric acid. Alkalis da ke narkewa a cikin yanayi mai zurfi suna bambanta. An raba shi zuwa carbide na roba na silicon da carbide na halitta na silicon carbide. Carbide na silicon na halitta, wanda aka sani da carbonite, galibi ana samunsa a cikin kimberlite da amphibolite na volcanic, amma adadinsa ƙarami ne kuma ba shi da ƙimar haƙa.
Silinda carbide mai matsin lamba a yanayin masana'antu cakuda ne na -SiC da -SiC kuma yana zuwa cikin launuka biyu: baƙi da kore. Tsarkakken silinda carbide ba shi da launi, yana ɗauke da ƙazanta baƙi ne, kore, shuɗi, rawaya. Iyakokin hatsi masu siffar hexagon da cubic, lu'ulu'u faranti ne, ginshiƙin mahaɗi. Hasken gilashi, yawa 3.17 ~ 3.47G/CM3, taurin Morse 9.2, na'urar hangen nesa kuma a 30380 ~ 33320MPa wurin narkewa: yanayin 2050 ya fara bambanta, yanayin dawowa 2600 ya fara bambanta. Ma'aunin roba shine 466,480 MPa. Ƙarfin tensile shine 171.5MPa. Ƙarfin matsi shine 1029MPa. Ma'aunin faɗaɗa layi shine (25 ~ 1000) 5.010 ~ 6/. Ma'aunin zafi (20) shine 59w/(mk). Kwanciyar sinadarai, tafasa a cikin HCl, H2SO4, HF ba zai lalace ba.
Dangane da amfani daban-daban, an raba simintin silicon carbide mai matsin lamba zuwa ga abrasive, refractory data, deoxidizer, lantarki silicon carbide da sauransu. Abubuwan da ke cikin SiC na abrasive silicon carbide ba za su kasa da 98% ba. An raba simintin silicon carbide mai refractory zuwa: (1) bayanai masu refractory black silicon carbide, abubuwan da ke cikin SiC ɗinsa iri ɗaya ne da niƙa silicon carbide. (2) Abubuwan da ke refractory na biyu black silicon carbide, abubuwan da ke cikin SiC fiye da 90%. (3) Abubuwan da ke cikin silicon carbide baƙi da SiC a cikin ƙananan refractories ba su kasa da 83% ba. Abubuwan da ke cikin silicon carbide da SiC da ake amfani da su a cikin deoxidizer gabaɗaya ana buƙatar su kasance sama da 90%. Duk da haka, ana iya amfani da rufin murhu na masana'antu na carbon graphitization, abun da ke cikin silicon carbide fiye da 45% na maganin azaman deoxidizer na yin ƙarfe. Silicon carbide don wakili na deoxidizing yana da nau'ikan siffar foda guda biyu da toshewar ƙira. Foda deoxidizer black silicon carbide yawanci yana da girman barbashi na 4 ~ 0.5 mm da 0.5 ~ 0.1 mm.
Kayan aikin lantarki na silicon carbide yana da manyan rukuni biyu
(1) Koren silicon carbide da ake amfani da shi don dumama kayan lantarki iri ɗaya ne da kore silicon carbide da ake amfani da shi don niƙa.
(2) Silicon carbide don arrester yana da buƙatun aikin lantarki na musamman, wanda ya bambanta da baƙin silicon carbide don niƙa bayanai masu tsauri.
Amfani da silinda mai simintin simintin simintin yanayi
Kayayyakin simintin silicon carbide masu matsin lamba a yanayi suna da ayyuka na musamman kamar juriyar zafi mai yawa, juriyar lalacewa, juriyar zafi, juriyar wuta, juriyar radiation, kyakkyawan juriyar wutar lantarki da zafi, da sauransu, kuma an yi amfani da su sosai a sassa daban-daban na tattalin arzikin ƙasa. A ƙasar Sin, galibi ana amfani da silicon carbide mai launin kore a matsayin mai gogewa. Ana amfani da silicon carbide mai launin baƙi don yin duwatsun niƙa, waɗanda galibi ana amfani da su don yankewa da niƙa kayan da ke da ƙarancin ƙarfi, kamar gilashi, yumbu, dutse, abubuwan hana ruwa, da kuma don niƙa sassan ƙarfe da kayan ƙarfe marasa ƙarfe. Niƙa da aka yi da silicon carbide mai launin kore galibi ana amfani da shi don niƙa carbide mai siminti, ƙarfe mai ƙarfe, gilashin gani, da kuma niƙa layin silinda da kayan aikin ƙarfe masu sauri. Ana amfani da cubic silicon carbide abrasives ne kawai don niƙa ƙananan bearings masu matuƙar daidaito. Ana iya inganta juriyar lalacewa na turbine impellers sosai ta hanyar shafa musu foda SIC ta hanyar yin amfani da electroplating. Ta amfani da matsin lamba na injiniya don tura injin niƙa mai siffar SiC200 da ƙaramin foda na W28 zuwa bangon silinda na injin ƙonewa na ciki, tsawon rayuwar silinda zai iya ninka fiye da ninki biyu.
Lokacin Saƙo: Yuni-16-2023