Katundu ndi ntchito zazikulu za reaction-sintered silicon carbide

Rection-sintered silicon carbide katundu ndi ntchito zazikulu? Silicon carbide amathanso kutchedwa carborundum kapena mchenga wosayaka moto, ndi mankhwala osakhazikika, omwe amagawidwa kukhala obiriwira a silicon carbide ndi silicon carbide wakuda awiri. Kodi mukudziwa zomwe silicon carbide ili nazo komanso ntchito zake zazikulu? Lero, tikuwonetsa katundu ndi ntchito zazikulu za silicon carbide.

Reactive sintering silicon carbide ndi ntchito mchenga wa quartz, calcined petroleum coke (kapena malasha coking), nkhuni slag (kupanga wobiriwira pakachitsulo carbide ayenera kuwonjezera chakudya mchere) ndi zipangizo zina, kupyolera mu ng'anjo magetsi kutentha mosalekeza kutentha smelting.

Makhalidwe a reaction-sintered silicon carbide:

1. Thermal conductivity and thermal expansion coefficient of silicon carbide. Monga mtundu wa zinthu zokanira, njerwa za carbonized zimakhala ndi mphamvu yotsutsa kugwedezeka. Izi makamaka zimawonetseredwa mu mphamvu yake yamphamvu yamafuta (kutengera kutentha kokwanira) komanso kutsika kocheperako kowonjezera kwamafuta.

2, ma conductivity a silicon carbide. Silicon carbide ndi zinthu za semiconductor, makonzedwe ake amasiyana ndi mtundu ndi kuchuluka kwa zonyansa zomwe zimalowetsedwa mu crystallization, ndipo kukana kuli pakati pa 10-2-1012Ω · cm. Pakati pawo, aluminiyamu, nayitrogeni ndi boron zimakhudza kwambiri madulidwe a silicon carbide, ndipo ma conductivity a silicon carbide ndi aluminiyamu amawonjezeka kwambiri.

3. Kukana kwa silicon carbide. Kukaniza kwa silicon carbide kumasintha ndikusintha kwa kutentha, koma mkati mwamtundu wina wa kutentha ndi mawonekedwe a kutentha kwa chitsulo chotsutsa amasinthidwa. Ubale pakati pa kukana ndi kutentha kwa silicon carbide ndizovuta kwambiri. Ma conductivity a reaction-sintered silicon carbide amawonjezeka ndi kutentha kukwera pamtengo wina, ndipo ma conductivity amachepetsa kutentha kumawukanso.

Kugwiritsa ntchito silicon carbide:

1, zinthu zosagwirizana ndi kuvala - zomwe zimagwiritsidwa ntchito makamaka popanga gudumu la mchenga, sandpaper, whetstone, gudumu lopukuta, phala lopukuta ndi zinthu za photovoltaic m'maselo a photovoltaic, maselo a photovoltaic ndi zigawo zikuluzikulu zakupera, kugaya ndi kupukuta.

2, mkulu-mapeto refractory zakuthupi - angagwiritsidwe ntchito ngati zitsulo makampani deoxidizer ndi dzimbiri zosagwira zipangizo, kuti mosalekeza mkulu kutentha ng'anjo prefabricated zigawo zikuluzikulu, mbali zokhazikika, etc.

3, zoumba zoumba - osati kuchepetsa kuchuluka kwa ng'anjo, komanso kusintha mtundu wa zinthu mafakitale ng'anjo, kuchepetsa nthawi mkombero, ndi abwino zinthu zosalunjika za ceramic glaze sintering, mosalekeza mkulu kutentha si oxide ceramics, kusonyeza sintered porcelain.

4, zitsulo zosowa - mabizinesi achitsulo ndi zitsulo, malo opangira zitsulo, ali ndi ntchito inayake.

5, zina - zomwe zimagwiritsidwa ntchito popanga zokutira zakutali za infrared kapena silicon carbide plate far-infrared radiation dryer.

Silicon carbide chifukwa chosalala organic mankhwala, mkulu kutentha kutengerako koyefit, yaing'ono liniya kukulitsa koyenera, zabwino kuvala kukana, kuwonjezera kuvala kugonjetsedwa zipangizo, pali ntchito zina zazikulu, monga: ndi ndondomeko yatsopano ya silicon carbide ufa guluu mu centrifugal impeller kapena silinda thupi patsekeke, akhoza kusintha kuvala kukana ndi kuonjezera moyo utumiki 1 mpaka 2; Ntchito kupanga mkulu kalasi refractory zakuthupi, kutentha kutentha kukana kugwedezeka, kukula pang'ono, kulemera kuwala ndi mkulu mphamvu, kuteteza chilengedwe ndi mphamvu kupulumutsa mphamvu n'zoonekeratu. Low-grade silicon carbide (yomwe ili ndi pafupifupi 85% SiC) ndi yabwino deoxidizing wothandizira, amene angagwiritsidwe ntchito imathandizira chitsulo kupanga mlingo, ndi yabwino kusokoneza zikuchokera ndi kuwongolera khalidwe zitsulo. Kuphatikiza apo, silicon carbide imagwiritsidwanso ntchito popanga zida zambiri zamagetsi zamagetsi silicon molybdenum ndodo.