Ke noi a me ka holomua noiʻi o ka uhi SiC i ka carbon/carbon thermal field material for monocrystalline silicon-1

Ua lilo ka hana mana photovoltaic solar i ʻoihana ikehu hou loa o ka honua. Hoʻohālikelike ʻia me ka polysilicon a me ka amorphous silicon solar cell, monocrystalline silicon, ma ke ʻano he photovoltaic power generation material, he kiʻekiʻe kiʻekiʻe photoelectric hoʻololi maikaʻi a me nā pono pāʻoihana koʻikoʻi, a ua lilo ia i kumu nui o ka hana mana photovoltaic solar. ʻO Czochralski (CZ) kekahi o nā ala nui e hoʻomākaukau ai i ke silika monocrystalline. ʻO ka hoʻohui ʻana o Czochralski monocrystalline furnace e pili ana i ka ʻōnaehana umu, ka ʻōnaehana vacuum, ka ʻōnaehana kinoea, ka ʻōnaehana kahua wela a me ka ʻōnaehana uila. ʻO ka ʻōnaehana kahua wela kekahi o nā kūlana koʻikoʻi no ka ulu ʻana o ka silika monocrystalline, a ʻo ka maikaʻi o ka silikon monocrystalline e hoʻopili pololei ʻia e ka puʻupuʻu gradient mahana o ke kahua wela.

Hoʻokumu nui ʻia nā ʻāpana wela i nā mea kalapona (nā mea graphite a me nā mea carbon / carbon composite), i hoʻokaʻawale ʻia i nā ʻāpana kākoʻo, nā ʻāpana hana, nā mea wela, nā ʻāpana pale, nā mea insulation thermal, etc., e like me kā lākou hana, e like me i hōʻike ʻia ma ke Kiʻi 1. Ke hoʻomau nei ka nui o ka silicon monocrystalline, ke piʻi nei ka nui o nā koi no nā ʻāpana kahua wela. ʻO nā mea hana kalapona/carbon composite ka mea koho mua loa no nā lako kahua wela no ke silika monocrystalline ma muli o kona kūpaʻa ʻana a me nā waiwai mechanical maikaʻi loa.

I ke kaʻina hana o ka czochralcian monocrystalline silika, ka hehee ana o ke silika mea e hua mai ke kinoea mahu a me ka hooheheeia silicon splash, ka hopena i ka silicification erosion o kalapona / kalapona wela kahua, a me ka mechanical waiwai a me ka lawelawe ola o kalapona / kalapona wela kahua mea. pilikia loa. No laila, pehea e hōʻemi ai i ka silicification erosion o carbon / carbon thermal field material a hoʻomaikaʻi i ko lākou ola lawelawe ʻana i lilo i mea hopohopo maʻamau o nā mea hana silika monocrystalline a me nā mea hana ʻenehana carbon / carbon thermal field.ʻO ka uhi kalapona silikaua lilo i mea koho mua loa no ka pale ʻana i ka uhi ʻana o ka ʻili o ka carbon/carbon thermal field material ma muli o kona maikaʻi ʻana i ka haʻalulu wela a me ke kūpaʻa ʻana.

Ma kēia pepa, e hoʻomaka ana mai ka carbon/carbon thermal field material i hoʻohana ʻia i ka hana silicon monocrystalline, ua hoʻokomo ʻia nā ʻano hoʻomākaukau nui, nā pono a me nā hemahema o ka uhi silicon carbide. Ma kēia kumu, ʻike ʻia ka noiʻi a me ka holomua noiʻi o ka uhi ʻana o ka carbide silika i ka carbon / carbon thermal field material e like me nā ʻano o ka carbon/carbon thermal field material, a me nā ʻōlelo aʻoaʻo a me nā kuhikuhi hoʻomohala no ka pale ʻana i ka uhi ʻana o ka ʻili o ka carbon/carbon thermal field material. waiho ʻia i mua.

1 Hoʻomākaukau ʻenehana oka uhi ʻana o ka carbide silika

1.1 Keʻano hoʻokomo

Hoʻohana pinepine ʻia ke ʻano hoʻopili e hoʻomākaukau i ka uhi o loko o ka silicon carbide i loko o ka ʻōnaehana material composite C/C-sic. Hoʻohana mua kēia ʻano hana i ka pauda hui ʻia e wahī i ka mea hana kalapona/carbon composite, a laila hoʻokō i ka mālama wela ma kahi wela. Hiki ke ʻano o nā hopena physico-chemical paʻakikī ma waena o ka pauka hui ʻia a me ka ʻili o ka hāpana e hana i ka uhi. ʻO kona pōmaikaʻi ʻo ia ka maʻalahi o ke kaʻina hana, hoʻokahi wale nō kaʻina e hiki ke hoʻomākaukau i nā mea hana matrix composite mānoanoa, māwae ʻole; Hoʻololi liʻiliʻi liʻiliʻi mai preform i ka huahana hope; He kūpono no kēlā me kēia fiber i hoʻoikaika ʻia; Hiki ke hana ʻia kahi gradient haku mele ma waena o ka uhi a me ka substrate, i hui pū ʻia me ka substrate. Eia nō naʻe, aia kekahi mau pōʻino, e like me ka hopena kemika i ka wela kiʻekiʻe, hiki ke hōʻino i ka fiber, a me nā ʻano mechanical o ke kalapona/carbon matrix emi iho. He mea paʻakikī ke hoʻomaluʻana i keʻano likeʻole o ka uhiʻana, ma muli o nā kumu e like me ka'umekaumaha, kahi e hanaʻole ai ka uhi.

1.2 Ke ʻano o ka uhi ʻana i ka slurry

ʻO ke ʻano o ka uhi ʻana o ka slurry ʻo ka hui ʻana i ka mea hoʻopili a me ka mea hoʻopili i loko o kahi hui ʻana, e palaki like ma ka ʻili o ka matrix, ma hope o ka maloʻo ʻana i kahi lewa inert, ua sintered ka specimen i uhi ʻia ma ke kiʻekiʻe wela, a hiki ke loaʻa ka uhi pono. ʻO nā mea maikaʻi ʻo ia ka maʻalahi o ke kaʻina hana a maʻalahi hoʻi e hana, a maʻalahi ka mālama ʻana i ka mānoanoa o ka uhi; ʻO ka hemahema ʻo ia ka maikaʻi ʻole o ka hoʻopaʻa ʻana i ka ikaika ma waena o ka uhi a me ka substrate, a ʻo ke kūpaʻa haʻalulu wela o ka uhi ʻana he ʻilihune, a ua haʻahaʻa ke ʻano o ka uhi.

1.3 Keʻano hana hoʻoheheʻe mahu

ʻO ke kaʻina hana mahu kemika (CVR) he hana kaʻina hana e hoʻoheheʻe ai i nā mea silika paʻa i loko o ka mahu silika ma kekahi mahana, a laila e hoʻoheheʻe ʻia ka mahu silika i loko a me ka ʻili o ka matrix, a hana i loko o ka wahi me ke kalapona i loko o ka matrix e hana ai. kalapona kalapona. ʻO kāna mau mea maikaʻi ʻo ia ka lewa like ʻole i loko o ka umu ahi, ka nui o ka hopena a me ka mānoanoa o ka waiho ʻana o nā mea i uhi ʻia ma nā wahi a pau; He maʻalahi ke kaʻina hana, a hiki ke hoʻomalu ʻia ka mānoanoa o ka uhi ʻana ma o ka hoʻololi ʻana i ke kaomi mahu silika, ka manawa deposition a me nā ʻāpana ʻē aʻe. ʻO ka hemahema, ʻo ka hāpana i hoʻopilikia nui ʻia e ke kūlana i loko o ka umu, a ʻo ke kaomi mahu silika i loko o ka umu ʻaʻole hiki ke hōʻea i ka uniformity theoretical, e hopena i ka mānoanoa uhi ʻole.

1.4 Ke ʻano hoʻoheheʻe ʻana i ka mahu

ʻO ka hoʻoheheʻe ʻana o ka mahu kemika (CVD) kahi hana e hoʻohana ʻia ai nā hydrocarbons i kumu kinoea a me ka maʻemaʻe kiʻekiʻe N2/Ar ma ke ʻano he kinoea lawe lawe e hoʻokomo i nā kinoea i hui ʻia i loko o kahi reactor mahu, a hoʻoheheʻe ʻia nā hydrocarbons, synthesized, diffused, adsorbed a hoʻoholo ʻia ma lalo. kekahi mahana a me ke kaomi e hana i nā kiʻiʻoniʻoni paʻa ma ka ʻili o nā mea hana kalapona/carbon composite. ʻO kona pōmaikaʻi ʻo ia ka hiki ke hoʻomalu ʻia ka nui a me ka maʻemaʻe o ka uhi; He kūpono no ka ʻāpana hana me ke ʻano paʻakikī; Hiki ke hoʻomalu ʻia ke ʻano aniani a me ka morphology ili o ka huahana ma ka hoʻoponopono ʻana i nā ʻāpana deposition. ʻO nā hemahema ʻo ia ka haʻahaʻa haʻahaʻa o ka waiho ʻana, paʻakikī ke kaʻina hana, kiʻekiʻe ke kumukūʻai hana, a aia paha nā hemahema o ka uhi ʻana, e like me nā māwae, nā pōʻino mesh a me nā hemahema o ka ʻili.

I ka hōʻuluʻuluʻana, ua kaupalenaʻia keʻano o ka hoʻokomoʻana i kona mau hiʻohiʻonaʻenehana, i kūpono no ka hoʻomohalaʻana a me ka hanaʻana i nā mea hana hale hana a me nā mea liʻiliʻi; ʻAʻole kūpono ke ʻano o ka uhi ʻana no ka hana nui ʻana ma muli o kona kūlike ʻole. Hiki i ke ala CVR ke hoʻokō i ka hana nui o nā huahana nui, akā ʻoi aku ka nui o nā koi no nā lako a me nā ʻenehana. ʻO ke ala CVD kahi ala kūpono no ka hoʻomākaukau ʻanaSIC uhi, akā ʻoi aku ka kiʻekiʻe o kona kumukūʻai ma mua o ke ʻano CVR no ka paʻakikī o ka hoʻokele kaʻina.