ʻO ka silikon carbide ceramic kahi mea hana me ka silicon carbide (SiC) ma ke ʻano he mea nui, nona ka ikaika kiʻekiʻe, ke kūpaʻa wela kiʻekiʻe a me ke kūpaʻa corrosion, a hoʻohana nui ʻia i nā ʻoihana ʻoihana.
ʻO ke kaʻina hana ka nui o ka sintering kaomi wela, ka sintering pressureless, ka sintering reaction a me nā ʻano hana ʻē aʻe, ma o ka hoʻomalu ʻana i ka mahana sintering (1450-2450 degere) a me ka hoʻohui ʻana i nā mea hoʻohui (e like me ka boron carbide, alumina) e hoʻokō i ka densification
Huahana Huahana
ʻO nā huahana ceramic silicon carbide sintered i loaʻa nā hiʻohiʻona maikaʻi loa:
ʻOi aku ka maikaʻi o nā waiwai mechanical: ʻO ka paʻakikī kiʻekiʻe (Mohs scale 9.0-9.5 kokoke i kēlā o ke daimana), me ka ikaika kulou o 400-600 megapascals, a me ka mālama ʻana i ka ikaika kiʻekiʻe ma kahi mahana o 1600 degere.
ʻO nā waiwai wela koʻikoʻi: Kiʻekiʻe ka wela wela (120 - 220 W/m·K), haʻahaʻa hoʻonui hoʻonui wela (ma kahi o 4.0×10^{-6}/K), hiki ke kū i nā wela kiʻekiʻe a hiki i 1400 - 1600 degere, a me ke kūpaʻa ikaika i ka haʻalulu wela (ʻoi aku ka ʻokoʻa o ka wela ma mua o 800 degere).
Paʻa kemika maikaʻi loa: Kūleʻa i ka ʻakika a me ka ʻeleʻele alkali, ʻoi aku ka ikaika o ka pale ʻana ma waena o nā ceramics non{0}}oxide, kūpono no nā kaiapuni wela a kiʻekiʻe.
ʻO ka lōʻihi a me ka versatility: ʻOi aku ka lōʻihi ma mua o 10 mau manawa ma mua o nā seramika maʻamau, a loaʻa iā ia nā waiwai semiconductor (ʻaʻole like me nā ceramics insulating maʻamau), kūpono ia no nā kūlana hana koʻikoʻi.
ʻO nā seramika Silicon carbide, ma muli o ko lākou paʻakikī kiʻekiʻe, ke kūpaʻa kiʻekiʻe o ka wela, ka pale ʻana i ka corrosion, ka conductivity thermal kiʻekiʻe a me ke kūpaʻa ʻaʻahu maikaʻi loa, he hana koʻikoʻi i nā ʻano ʻoihana like ʻole. ʻO nā noi nui e like me kēia:
I. Kiekie wela a me Metallurgical oihana
Na kapuahi -kiekie: E hana ana i na kapuahi kiln, crucibles, nozzles kuni, mea kokua i ka umu ahi, a pela aku, hiki ke hana paa ma na wela maluna o 1600 degere.
Mea hoohuoi: Hoʻohana ʻia no ka uhi ʻana o ka umu ahi, nā pōhaku lepo, a me nā papa insulation, e pale ana i ka hoʻoheheʻe ʻia e nā metala hoʻoheheʻe a hoʻolōʻihi i ke ola o nā mea hana.
ʻO ka hoʻoheheʻe metala: E like me nā deoxidizers e hoʻomaikaʻi i ka maʻemaʻe o ka wai kila, a i ʻole i hana ʻia i mau apo hoʻolele hoʻolei hoʻomau, nā paipu pale thermocouple, e hoʻomaikaʻi ana i ka maikaʻi o ka hoʻoheheʻe ʻana.
2. Mechanical Manufacturing a me Wear Resistance Field
Nā ʻāpana hoʻopaʻa: Hoʻohana ʻia nā apo hoʻopaʻa mīkini i loko o nā pamu kemika a me nā pā wai, me ka pale ʻana i ka corrosion he ʻumi mau manawa ma mua o nā metala maʻamau, e hoʻomaikaʻi nui ana i ke ola lawelawe.
ʻO nā bearings a me nā mea hana ʻoki: -wikiwiki kiʻekiʻe, alakaʻi kaʻaahi, a me nā mea hana ʻoki i uhi ʻia, kūpono i nā kūlana kiʻekiʻe -mahanahana a me -kiʻekiʻe, e hōʻemi ana i ka ʻaʻahu ʻana o nā lako.
E hoʻohana i nā paipu -kūpaʻa: ʻO nā paipu kaʻa kaʻa eli, nā lining impeller, me ke kū ʻana o ka ʻaʻahu he 5-20 mau manawa o ka hao.
3. Semiconductor a me Electronic Industry
Nā lako Semiconductor: ʻO nā diski wili, nā mea hoʻopili no ka hana wafer, kūpaʻa i ka wela kiʻekiʻe a me ka corrosion kemika, e hōʻoia ana i ka pololei o ka hana.
Nā pani hoʻoheheʻe wela: Nā mea hoʻoheheʻe wela no nā mea mana kiʻekiʻe (e like me IGBT, LED), me ka hoʻohenehene wela o 270 W/m·K, e hoʻomaikaʻi ana i ka maikaʻi o ka hoʻoheheʻe wela.
Nā mea uila: Nā mea hoʻopaʻa uwila, -nā pale pale uila, a me nā mea ʻē aʻe, nā mea uila e hoʻohana i ko lākou mau hiʻohiʻona hoʻokalakupua ʻole.
4. Kahua Kemika a me ke Kaiapuni
ʻO nā lako pale -ʻino: ʻO nā kiwi, nā lining reactor, nā paipu, hiki ke kū i nā ʻakika ikaika a me nā kumu ikaika (e like me 98% concentrated sulfuric acid).
Nā mea hoʻohana kaiapuni: -mehana kiʻekiʻe ka hoʻopau ʻana i ka uahi (e like me ka hoʻopau ʻana i ka ʻōpala), catalytic honeycomb mea lawe keramika no ka hoʻopau kaʻa.
Nā ʻāpana ikehu: Nā mea hoʻohui wahie, nā mea hoʻoheheʻe wela wela o ka lā, me ke kūpaʻa wela ma mua o 1000 degere.
5. Nā Kūlana Kūikawā a me nā Kūlana
ʻOihana Nukelea: ʻO nā paipu hoʻopaʻa wahie nuklea, nā ipu ʻōpala, kū i ka neutron irradiation a me nā wela kiʻekiʻe.
Mea pale pōkā: ʻO nā seramika pale pōkā hoʻohui ʻia ma o ka mālama ʻana i ka paʻakikī, me ka paʻakikī kiʻekiʻe a me ka haʻahaʻa haʻahaʻa (3.10-3.15 g/cm³).
ʻOihana Photovoltaic: Nā ʻāpana no ka lawe ʻana i nā wai etching polysilicon, hoʻonā i ka lole kiʻekiʻe a me nā pilikia corrosion ikaika.
Ke alakaʻi nei ka silikoni carbide ceramics i ka ʻenehana hou i ka ikehu hou (hydrogen fuel cell, photovoltaics), semiconductors, a me -mea hana kiʻekiʻe, a ʻo ia nā mea i makemake ʻia no nā kūlana koʻikoʻi e like me ka wela kiʻekiʻe, ka ʻino, a me ka lole kiʻekiʻe.
Hōʻike Huahana
no ke aha e koho ai iā mākou
Pane wikiwiki Nā huahana me ka uku kiʻekiʻe ʻO nā huahana me ka uku kiʻekiʻe
no ke aha e koho ai i kā mākou huahana
1. 20 makahiki o ka ʻike ma ka hoʻolei ʻana i ka pā hao, ka hōʻoia ʻana i ka maikaʻi, ka lawe ʻana i ka manawa
2. Hiki ke hāʻawi pololei i ka mīkini mīkini a me ka nānā ʻana i nā ʻāpana i hoʻopau ʻia a hoʻokō i nā koi nānā o nā mea kūʻai
3. Loaʻa iā ia nā kuleana hoʻokomo kūʻokoʻa a hoʻokuʻu aku a hiki ke hoʻokuʻu aku i nā huahana i nā wahi āpau o ka honua
Nā huahana pale: reaction sintered silicon carbide ceramic, China reaction sintered silicon carbide ceramic mea hana, mea hoʻolako, hale hana
