1. Binciken Kimiyya na Material da Tsari Tsari
1.1 Crystal Chemistry da Halayen haɗin gwiwa
(Silicon Carbide Crucibles)
Silicon carbide (SiC) wani yumbu mai ƙyalƙyali ne wanda aka yi shi da silicon da atom ɗin carbon da aka saita a cikin latticework na tetrahedral., da farko a cikin hexagonal (4H, 6H) ko kubik (3C) polytypes, kowanne yana nuna ban mamaki atom ɗin haɗin gwiwa.
The Si– C bond, tare da haɗin gwiwa makamashi na kewaye 318 kJ/mol, yana daga cikin mafi girma a cikin kayan gine-gine, bada na kwarai thermal tsaro, tsayin daka, da juriya ga harin sinadarai.
Wannan ƙaƙƙarfan hanyar haɗin gwiwar haɗin gwiwa yana haifar da wani abu tare da ma'anar narkewa da ke wucewa 2700 ° C(daukaka), sanya shi ɗaya daga cikin yumbun da ba oxide mafi ƙarancin ƙarfi waɗanda ke samuwa ga aikace-aikacen zafin jiki mai ƙarfi.
Ba kamar oxide porcelains kamar alumina ba, SiC yana kiyaye ƙarfin injina da juriya a yanayin zafi 1400 ° C, inda da yawa karafa da tukwane na al'ada suka fara yin laushi ko lalacewa.
Ya rage coefficient na thermal girma (~ 4.0 × 10 ⁻ / K) hadedde tare da high thermal watsin (80– 120 W/(m · K)) yana ba da damar hawan keke mai zafi mai sauri ba tare da ɓarna mai ɓarna ba, sifa mai mahimmanci don aiki mai mahimmanci.
Waɗannan gine-ginen da suka haɗa da su sun fito ne daga ma'auni mai kyau na electronegativity da makamantansu masu girman atomic na silicon da carbon, wanda ke inganta ingantaccen tsarin kristal da ya cika.
1.2 Ƙirƙirar Ƙaƙƙarfan Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙaƙwalwa
Silicon carbide crucibles yawanci ana yin su daga sintered ko ƙulla-ƙulle-ƙulle na SiC, tare da microstructure yana wasa tabbataccen aiki a cikin karko da juriyar girgiza zafi.
Sintered SiC crucibles an ƙirƙira su ta hanyar ƙaƙƙarfan-jihar ko sintirin ruwa-lokaci a matakan zafin jiki a sama 2000 ° C, sau da yawa tare da boron ko carbon additives don haɓaka ƙima da ƙayyadaddun hatsi.
Wannan tsari yana haifar da gaba ɗaya mai yawa, m-grained tsarin tare da kadan porosity (
Advanced Ceramics kafa a Oktoba 17, 2012, babban kamfani ne na fasaha mai himma ga bincike da haɓakawa, samarwa, sarrafawa, tallace-tallace da sabis na fasaha na yumbu dangi kayan da samfurori. Kayayyakinmu sun haɗa amma ba'a iyakance ga samfuran yumbura na Boron Carbide ba, Boron Nitride Ceramic Products, Silicon Carbide Ceramic Products, Silicon Nitride Ceramic Products, Zirconium Dioxide Ceramic Products, da dai sauransu. Idan kuna sha'awar, don Allah a ji daɗin tuntuɓar mu.
Tags: Silicon Carbide Crucibles, Silicon Carbide Ceramic, Silicon Carbide Ceramic Crucibles
Duk labarai da hotuna daga Intanet suke. Idan akwai wasu batutuwan haƙƙin mallaka, don Allah a tuntube mu a lokacin sharewa.
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