I ke kenekulia 21, me ka hoʻomohala ʻana o ka ʻepekema a me ka ʻenehana, ʻike, ikehu, nā mea, a me ka ʻenekinia olaola ua lilo i mau kia ʻehā o ka hoʻomohala ʻana i ka huahana kaiāulu o kēia lā, ma muli o nā waiwai kemika paʻa o ka silicon carbide, ke alakaʻi wela kiʻekiʻe, ka liʻiliʻi o ka coefficient hoʻonui wela, ka liʻiliʻi o ka density, ke kūpaʻa maikaʻi o ke kapa komo, ka paʻakikī kiʻekiʻe, ka ikaika mechanical kiʻekiʻe, ke kūpaʻa i ka corrosion kemika a me nā ʻano ʻē aʻe, ka ulu wikiwiki ʻana ma ke kahua o nā mea, Hoʻohana nui ʻia i nā bearings ball ceramic, nā valves, nā mea semiconductor, gyroscope, nā mea ana, aerospace a me nā kahua ʻē aʻe.
Ua hoʻomohala ʻia nā keramika silikona carbide mai ka makahiki 1960. Ma mua, ua hoʻohana nui ʻia ka silicon carbide i nā mea wili mīkini a me nā refractories. Hoʻopili nui nā ʻāina a puni ka honua i ka ʻoihana ʻana o nā keramika holomua, a i kēia manawa ʻaʻole wale ia e māʻona me ka hoʻomākaukau ʻana o nā keramika silikona carbide kuʻuna, akā ʻoi aku ka wikiwiki o ka hana ʻana o nā ʻoihana keramika ʻenehana kiʻekiʻe, ʻoi aku hoʻi ma nā ʻāina i hoʻomohala ʻia. I nā makahiki i hala iho nei, ua ʻike ʻia nā keramika multi-phase e pili ana i nā keramika SIC kekahi ma hope o kekahi, e hoʻomaikaʻi ana i ka paʻakikī a me ka ikaika o nā mea monomer. ʻO nā kahua nui ʻehā o ka noi ʻana o ka silikona carbide, ʻo ia hoʻi, nā keramika hana, nā mea refractory holomua, nā abrasives a me nā mea maka metallurgical.
He kūpaʻa maikaʻi loa ka pale ʻana o nā keramika silikon carbide
Ua aʻo ʻia a ua hoʻoholo ʻia nā keramika silikona carbide. ʻO ke kūpaʻa ʻaʻahu o nā keramika silikona carbide ua like kēia huahana me 266 mau manawa o ke kila manganese, like me 1741 mau manawa o ka hao hao chromium kiʻekiʻe. Maikaʻi loa ke kūpaʻa ʻaʻahu. Hiki nō iā ia ke mālama iā mākou i ka nui o ke kālā. Hiki ke hoʻohana mau ʻia nā keramika silikona carbide no nā makahiki he ʻumi a ʻoi.
He ikaika kiʻekiʻe nā keramika silikona carbide, paʻakikī kiʻekiʻe a me ke kaumaha māmā
Ma ke ʻano he ʻano mea hou, ʻoi aku ka ikaika o kēia huahana i ka hoʻohana ʻana i nā keramika silicon carbide, paʻakikī kiʻekiʻe, a māmā loa ke kaumaha, no laila, i ka wā e hoʻohana ai a hoʻololi ai i nā keramika silicon carbide, e ʻoi aku ka maʻalahi o ke kau ʻana a me ka hoʻololi ʻana.
He laumania ka paia o loko o ka silicon carbide ceramic a ʻaʻole e ālai i ka pauka
Hoʻopau ʻia kēia huahana i ke ahi ma hope o ke ana wela kiʻekiʻe, no laila he ʻano mānoanoa ke ʻano o nā keramika silicon carbide, he laumania ka ʻili, e ʻoi aku ka maikaʻi o ka nani o ka hoʻohana ʻana, no laila e ʻoi aku ka maikaʻi o ka nani i ka wā e hoʻohana ʻia ai i loko o ka ʻohana.
He haʻahaʻa ke kumukūʻai o nā keramika silicon carbide
ʻOi aku ka liʻiliʻi o ke kumukūʻai o ka hana ʻana i nā keramika silicon carbide, no laila ʻaʻole pono mākou e kūʻai i ke kumukūʻai o nā keramika silicon carbide he nui loa ke kumukūʻai, no laila no ko mākou ʻohana, akā hiki nō hoʻi ke mālama i ka nui o ke kālā.
Ka hoʻohana ʻana o ka seramika silikona carbide:
Pōpō keramika silikona carbide
He maikaʻi loa nā waiwai mechanical o ka pōpō seramika silikona carbide, kūpaʻa oxidation maikaʻi loa, kūpaʻa abrasion kiʻekiʻe a me ka coefficient friction haʻahaʻa. ʻO ka ikaika wela kiʻekiʻe o ka pōpō seramika silikona carbide, e hoʻemi nui ʻia ka ikaika o ka mea seramika maʻamau ma 1200 ~ 1400 degere Celsius, a mālama ʻia ka ikaika kūlou silicon carbide ma 1400 degere Celsius ma kahi kiʻekiʻe o 500 ~ 600MPa, no laila hiki i kona mahana hana ke hiki i 1600 ~ 1700 degere Celsius.
Mea hui pū ʻia ʻo Silicon carbide
Ua hoʻohana nui ʻia nā hui matrix Silicon carbide (SiC-CMC) ma ke kahua o ka aerospace no ko lākou mau ʻano wela wela kiʻekiʻe ma muli o ko lākou paʻakikī kiʻekiʻe, ikaika kiʻekiʻe a me ke kūpaʻa oxidation maikaʻi loa. ʻO ke kaʻina hana hoʻomākaukau o SiC-CMC e pili ana i ka preforming fiber, ka mālama wela kiʻekiʻe, ka uhi mesophase, ka densification matrix a me ka mālama ʻana ma hope. Loaʻa i ka fiber kalapona ikaika kiʻekiʻe ka ikaika kiʻekiʻe a me ka paʻakikī maikaʻi, a ʻo ke kino prefabricated i hana ʻia me ia he mau waiwai mechanical maikaʻi.
ʻO ka uhi ʻana o Mesophase (ʻo ia hoʻi, ʻenehana interface) ka ʻenehana koʻikoʻi i ke kaʻina hana hoʻomākaukau, ʻo ka hoʻomākaukau ʻana o nā ʻano uhi mesophase e komo pū ana me ka osmosis vapor chemical (CVI), ka waiho ʻana o ka vapor chemical (CVD), ke ʻano sol-sol (Sol-gcl), ke ʻano cracking polymer impregnation (PLP), ʻo ke ʻano kūpono loa no ka hoʻomākaukau ʻana o nā composites matrix silicon carbide ʻo ia ke ʻano CVI a me ke ʻano PIP.
ʻO nā mea uhi interfacial e komo pū me ke kalapona pyrolytic, boron nitride a me ka boron carbide, a ʻo ka boron carbide ma ke ʻano he ʻano pale oxidation interfacial coating ua uku nui ʻia. ʻO SiC-CMC, ka mea i hoʻohana pinepine ʻia i nā kūlana oxidation no ka manawa lōʻihi, pono nō hoʻi e hana i ka mālama pale oxidation, ʻo ia hoʻi, kahi papa o ka silicon carbide dense me ka mānoanoa o kahi 100μm i waiho ʻia ma luna o ka ʻili o ka huahana e ke kaʻina hana CVD e hoʻomaikaʻi i kona pale oxidation wela kiʻekiʻe.
Ka manawa hoʻouna: Pepeluali-14-2023