Babban Dorewa Tare da Reaction Bonded SiC

Reaction Bonded SiC (Farashin RBSC) abu ne mai ɗorewa mai matuƙar ɗorewa da ake amfani da shi a aikace-aikace da yawa saboda girman juriyar sa da kwanciyar hankali. Kara karantawa game da shi anan!

Samar da haɗin kai yana farawa ta hanyar haɗa kayan da suka ƙunshi SiC da carbon. Da zarar an kafa, wannan koren jiki yana jurewa machining kore don daidaito da gamawa.

Saka Resistance

Silicon carbide ya fito waje a matsayin ɗaya daga cikin manyan masu yin wasan kwaikwayo idan ya zo ga sa juriya, godiya ga ingantaccen tsarin masana'anta wanda ke haifar da tauri, ɗorewa masu jure lalacewa waɗanda suka tabbatar da ƙimar su a cikin buƙatun yanayin masana'antu.

Reactive Bonded Bakin Karfe Haɗuwa (Farashin RBSC), wanda aka ƙirƙira ta hanyar ingantaccen tsarin haɗin kai wanda a ciki narkakken siliki ne ke kutsawa cikin madaidaicin carbon preform., yana ba RBSC damar kula da siffarsa a yanayin zafi mai girma yayin da har yanzu yana da sautin tsari da juriya ga lalatawar acid.. Bugu da kari, Yawan fadada yanayin zafi ya yi ƙasa sosai kuma an tabbatar da juriyar lalata.

An san SiC sosai don taurin sa, juriya ga lalacewa, zafi da yashewar sinadarai azaman kayan da ake amfani da su don hatimi na injina da manyan abubuwan famfo masu inganci. Dangane da darajar sa, SiC kuma tana alfahari da kyakkyawan ƙarfin sassauƙa a yanayin yanayin amfani mai ƙarfi da kuma ƙarfin ɗaure mai kyau – Halayen da suka sa ya dace da aikace-aikace inda girgiza da girgiza zasu iya faruwa.

Juriya na thermal

Babban juriya na thermal na RBSC ya sa ya zama jagora a cikin buƙatar aikace-aikacen masana'antu, watsar da zafi yadda ya kamata don ba da damar amfani da shi a cikin yanayi masu zafi ba tare da ƙarin buƙatun lokaci da kulawa ba.

Reaction bonded silicon carbide (Farashin RBSC) ana samar da shi ta hanyar kutsawa ƙaƙƙarfan ƙaƙƙarfan gaurayawan SiC da carbon tare da silicon ruwa, ta yadda halayensa tare da sakamakon carbon ya haifar da ƙarin haɓakar siliki wanda ke haɗa abubuwan farko na SiC tare – sabanin sintered SiC wanda aka samar ta hanyar al'ada yumbu forming matakai ta amfani da wadanda ba oxide sintering aid..

Binciken Song ya ba da shawarar cewa haɗakarwar precursor impregnation yana haɓaka abun ciki na SiC ta hanyar sarrafa abin da ke tsakanin silicon ruwa da carbon amorphous., kawar da al'amura masu toshewa, da kuma samar da RB-SiC mai yawa tare da babban modulus da ƙarfi – samar da RBSC mai yawa tare da keɓaɓɓen haɗin ƙarfin tsari, sinadaran juriya, juriya na zafin jiki da juriya – yin RBSC kayan aikin gobe. Bugu da kari, Wannan kayan da ke jujjuyawa yana alfahari da dorewa mai ban mamaki a cikin manyan wuraren lalacewa tare da ingantaccen juriya da juriya da kwanciyar hankali na thermal. – yin RBSC kayan aikin gobe.

Juriya na Chemical

Reaction Bonded SiC wani abu ne mai tsananin ƙarfi da juriya, sananne don kasancewar rashin ƙarfi na sinadarai da juriya ga oxidation da lalata. Mai ikon jure yanayin zafi yayin da yake da ƙarfi, Reaction Bonded SiC yana samar da ingantattun abubuwa a cikin saitunan masana'antu kamar famfo, nozzles, bearings, shakewar sarrafa kwararar ruwa da makamantansu.

Samar da RB SiC ya haɗa da allurar silicon ruwa a cikin bututun carbon da aka cika cikin sifarsa ta ƙarshe ta amfani da narke mai ƙarfi. (RMI). Wannan tsari yana tabbatar da ƙarancin ragowar carbon toshe pores, kuma yana ba da damar narkakkar siliki don amsawa tare da carbon don ƙirƙirar silicon carbide [1, 2].

Silikon carbide da ke da alaƙa da amsawa yana ba da ingantaccen yanayin zafi, low coefficient na fadada, da juriya ga girgizawar thermal, oxidation da lalata; yin shi kyakkyawan zaɓi don kayan sarrafa semiconductor kamar ɗakunan kiln da kayan ɗaki ko crucibles. Bugu da kari, kaddarorinsa masu nauyi da ƙarfinsa suna sa ya zama mai amfani a cikin kayan aikin soja ko na sararin samaniya kamar farantin sulke ko bututun roka..

Juriya Shock Thermal

Za'a iya auna juriya mai zafi na kayan ta ikon jure damuwa ƙarƙashin saurin canjin yanayin zafi, dangane da tsarin su, dukiya da muhalli. Irin wannan damuwa na iya haifar da tsagewa, nakasu ko karaya a cikin tsarin su, dukiya ko muhalli – haifar da yuwuwar al'amurran da suka faru misali.

Reaction Bonded Silicon Carbide yana da ƙayyadaddun tsarin shinge na haɗin gwiwa tsakanin carbon da silicon atom waɗanda ke ba shi ƙarfin injina., high thermal watsin da ƙananan yawa – Halayen da ke ba da gudummawar juriya ta thermal shock.

Juriya na girgiza thermal na kayan ya dogara da dalilai da yawa, gami da ƙimar farawa ta farko da saurin yaɗawa, tsayin tsagewa da yanayin farkonsa. Abun RBSC yana da ikon ɗaukar babban adadin damuwa yayin da yake tsayayya da nau'ikan lalacewa iri-iri – daga tsagewar matrix da ke tasowa a tsakanin ramukan fiber zuwa fashewar radial tare da bangon pore – ba tare da shan wahala mai yawa ko ɓarna samu ba.