E pili ana i ka Silicon Carbide a me ka SiC keramika

He kūpaʻa maikaʻi loa ʻo Silicon Carbide i ka corrosion, ka ikaika mechanical kiʻekiʻe, ka conductivity thermal kiʻekiʻe, ka coefficient haʻahaʻa loa o ka hoʻonui ʻana i ka wela, a ʻoi aku ka maikaʻi o ka haʻalulu haʻalulu ma mua o ka alumincell namet kiʻekiʻe loa. Hoʻokumu ʻia ʻo Silicon carbide me ka tetrahedra o ke kalapona a me nā ʻātoma silicon me nā mea paʻa ikaika i ka lattice aniani. Hoʻopuka kēia i kahi mea paʻakikī a ikaika loa. ʻAʻole hoʻouka ʻia ʻo Silicon carbide e nā waikawa a i ʻole alkali a i ʻole nā ​​paʻakai hoʻoheheʻe a hiki i 800ºC. Ma ka lewa, hana ʻo SiC i kahi uhi silicon oxide pale ma 1200ºC a hiki ke hoʻohana ʻia a hiki i 1600ºC. ʻO ka hoʻoili wela kiʻekiʻe i hui pū ʻia me ka hoʻonui haʻahaʻa haʻahaʻa a me ka ikaika kiʻekiʻe e hāʻawi i kēia mea i nā ʻano kūʻokoʻa kūʻokoʻa i ka haʻalulu wela. ʻO nā seramika silikoni carbide me ka liʻiliʻi a ʻaʻole ʻole ka pauku lepo lepo e mālama i ko lākou ikaika i nā wela kiʻekiʻe loa, e kokoke ana i 1600ºC me ka nalowale ʻole o ka ikaika. ʻO ka maʻemaʻe kemika, ke kūpaʻa ʻana i ka hoʻouka kemika i ka wela, a me ka paʻa ʻana o ka ikaika i nā wela kiʻekiʻe ua kaulana loa kēia mea e like me nā kākoʻo wafer tray a me nā hoe i nā umu semiconductor. Thcell namelectrical conduction o ka mea i alakai i kona hoʻohana 'ana i ke kū'ē'ē wela mea no ka uila umu ahi, a ma ke ano he kī i loko o thermistors (mahana loli resistors) a me nā varistors (voltage variable resistors). ʻO nā noi ʻē aʻe e pili ana i nā maka sila, nā papa lole, nā bearings a me nā paipu liner.

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Ka manawa hoʻouna: Jun-05-2018
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