ʻO nā waiwai a me ka hoʻohana nui ʻana o ka carbide silika hoʻoheheʻe

Reaction-sintered silikona carbide waiwai a me ka hoʻohana nui? Hiki ke kapa ʻia ʻo Silicon carbide he carborundum a i ʻole ke one ahi ahi, he mea hoʻohuihui inorganic, i māhele ʻia i ka carbide silicon ʻōmaʻomaʻo a me ka carbide silicon ʻeleʻele ʻelua. Ua ʻike anei ʻoe i nā waiwai a me nā hoʻohana nui o ka silicon carbide? I kēia lā, e hoʻolauna mākou i nā waiwai a me nā hoʻohana nui o ka silicon carbide.

ʻO ka reactive sintering silicon carbide ka hoʻohana ʻana i ke one quartz, calcined petroleum coke (a i ʻole coal coking), lāʻau slag (ka hana ʻana o ka ʻōmaʻomaʻo silicon carbide pono e hoʻohui i ka paʻakai meaʻai) a me nā mea ʻē aʻe, ma o ka umu hoʻomehana uila e hoʻoheheʻe mau ana i ka wela wela.

ʻO nā ʻano o ka carbide silicon reaction-sintered:

1. Thermal conductivity and thermal expansion coefficient o silicon carbide. Ma ke ʻano he ʻano mea refractory, ʻoi aku ka maikaʻi o ke kūpaʻa ʻana o ka pōhaku carbonized i ka haʻalulu. Hōʻike nui ʻia kēia ma kona conductivity wela (heat transfer coefficient) a me ka helu haʻahaʻa o ka hoʻonui wela.

2, ka conductivity o ka silika carbide. ʻO ka Silicon carbide kahi mea semiconductor, ʻokoʻa kona conductivity me ke ʻano a me ka nui o nā haumia i hoʻokomo ʻia i loko o ka crystallization, a ʻo ke kū'ē ʻana ma waena o 10-2-1012Ω·cm. Ma waena o lākou, ʻo ka aluminika, ka nitrogen a me ka boron ka mea nui i ka conductivity o ka silicon carbide, a me ka conductivity o ka silicon carbide me ka nui o ka alumini e piʻi nui.

3. Ke kū'ēʻana o ka carbide silika. Hoʻololi ke kūpaʻa o ka silicon carbide me ka hoʻololi ʻana o ka mahana, akā i loko o kahi pae wela a me nā ʻano wela o ka resistor metala. ʻOi aku ka paʻakikī o ka pilina ma waena o ke kū'ē a me ka mahana o ka silicon carbide. Hoʻonui ka conductivity o ka reaction-sintered silicon carbide me ka piʻi ʻana o ka mahana i kekahi waiwai, a emi ka conductivity ke piʻi hou ka mahana.

ʻO ka hoʻohana ʻana i ka silika carbide:

1, nā mea ʻaʻahu - hoʻohana nui ʻia no ka hana ʻana i ka huila one, ka wili ʻana i ke one, ka pōhaku ʻala, ka huila wili, ka paʻi wili a me nā huahana photovoltaic i nā cell photovoltaic, nā kiʻi photovoltaic a me nā mea e wili ai i ka ʻili, wili a polishing.

2, mea refractory kiʻekiʻe - hiki ke hoʻohana ʻia ma ke ʻano he deoxidizer ʻoihana metallurgical a me nā mea pale corrosion, e hana mau i nā ʻāpana prefabricated kiln kiʻekiʻe, nā ʻāpana paʻa, etc.

3, nā ceramics hana - ʻaʻole hiki ke hoʻemi wale i ka nui o ka kiln, akā hoʻomaikaʻi pū i ka maikaʻi o nā huahana kiln ʻoihana, hoʻemi i ka manawa pōʻai, ʻo ia ka mea kūpono ʻole no ka sintering ceramic glaze, hoʻomau kiʻekiʻe kiʻekiʻe non-oxide ceramics, e hōʻike ana i ka porcelain sintered.

4, metala laha ole - hao a me ke kila 'oihana, metallurgical 'oihana concentrator kahua, i kekahi noi.

5, mea ʻē aʻe - hoʻohana ʻia e hana i ka uhi ʻana i ka hoʻoheheʻe infrared lōʻihi a i ʻole ka pā silika carbide mea hoʻomaloʻo hoʻoheheʻe infrared mamao.

Silicon carbide ma muli o ka laumania organik kemika waiwai, kiʻekiʻe wela hoʻololi coefficient, liʻiliʻi linear hoʻonui coefficient, maikaʻi kāʻei kū'ē, ma ka hoʻohui 'ana i nā mea kū'ē kū'ē, aia kekahi mau hoʻohana nui, e like me: me ke kaʻina hana hou i ka silicon carbide pauda glue i loko. ka centrifugal impeller a i ʻole cylinder body cavity, hiki ke hoʻomaikaʻi i ka pale ʻana a hoʻonui i ke ola lawelawe o 1 a 2 mau manawa; Hoʻohana ʻia e hana i nā mea refractory kiʻekiʻe, ke kūpaʻa haʻalulu kiʻekiʻe, ka liʻiliʻi liʻiliʻi, ke kaumaha māmā a me ka ikaika kiʻekiʻe, ʻike ʻia ka palekana o ke kaiapuni a me ka hopena mālama ola. ʻO ka carbide silicon haʻahaʻa haʻahaʻa (loaʻa ma kahi o 85% SiC) kahi mea hoʻoheheʻe deoxidizing maikaʻi, hiki ke hoʻohana ʻia e hoʻolalelale i ka nui o ka hana hao, a kūpono hoʻi i ka hoʻoponopono ʻana i ka haku mele a hoʻomaikaʻi i ka maikaʻi o ke kila. Eia kekahi, hoʻohana ʻia ka silicon carbide e hana i nā mea hoʻomehana uila he nui ke koʻokoʻo molybdenum.