ʻO Silbona Titanium Carbide, Ti3SiC2

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ʻO Silbona Titanium Carbide, Ti3SiC2

I nā makahiki i hala iho nei, ua synthesize kahi ʻepekema ʻepekema i kahi papa hou o nā mea ceramic 312, ka papahana maʻamau no M3XZ2, i waena o lākou, ʻo ka M hoʻokahi a i ʻole kekahi o nā mea metala hoʻololi (e like me Ti, V), X he hoʻokahi a ʻoi paha. o nā mea nui o ka pūʻulu nui, he helu o III, nā mea nui o ka hui nui (e like me Al Ge Si), ʻo Z kekahi a i ʻole nā ​​mea nonmetallic (e like me CNB, a pēlā aku.),


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I nā makahiki i hala iho nei, ua synthesize kahi ʻepekema ʻepekema i kahi papa hou o nā mea ceramic 312, ka papahana maʻamau no M3XZ2, i waena o lākou, ʻo ka M hoʻokahi a i ʻole kekahi o nā mea metala hoʻololi (e like me Ti, V), X he hoʻokahi a ʻoi paha. o nā mea nui o ka pūʻulu nui, he helu o III, nā mea nui o ka hui (e like me Al Ge Si), ʻo Z kekahi a i ʻole nā ​​mea nonmetallic (e like me CNB, a me nā mea ʻē aʻe), aia he 312 wahine o ke aʻo ʻana o ka honua hui pū Ti3SiC2 nui Ti3AlC2 Ti3GeC2 like ko lākou ʻano aniani, like ia e pili ana i / MMC mokuna hui ka hana o ke kūpaʻa ʻana i ke kūpikipiki kiʻekiʻe o ke kūpikipiki o ka ikaika kiʻekiʻe, a me nā mea metala e like me ka machinability conductive o ka conductivity mehana a me nā pono ea e ulu pono ai nā pono i nā makahiki 1980 s, ma muli o ka devel wikiwiki opment o ka mea e hooikaika ai e like me ka puluniu, whisker a me ka mokulele kiʻekiʻe i manaʻo ʻia ma mua o nā koina o ka ʻenekini, ua lilo nā mea hoʻohui pālolo ceramic i wahi noiʻi i hoʻomaʻemaʻe ʻia. , paʻakikī i ka noi ʻana i mea e hoʻoponopono ai i kēia pilikia ua hoʻomaka ka poʻe noiʻi e ʻimi i ke ʻano o nā mea metala a me nā mea pālolo o ke kiʻekiʻe wela, i loaʻa hope ʻia ma Ti - Si - C ʻōnaehana ʻo Ti3SiC2 (Ti3SiC2) ʻano ʻelua. o ka metala i ka mehana me ka conductivity mehana maikaʻi a me ka conductivity uila, ʻo ka paʻakikī vickers haʻahaʻa haʻahaʻa a me ka modulus kiʻekiʻe o ka lahilahi; Ductile ma ke ana wela, hiki ke hana ʻia e like me ka mea hao, a me ka ea ma nā mahana wela; I ka manawa like, loaʻa iā ia nā waiwai o nā mea pālolo, ka ikaika hāʻawi kiʻekiʻe, kahi pae hoʻoheheʻe kiʻekiʻe, kūpaʻa wela kiʻekiʻe a me ke kūpaʻa kūpona maikaʻi. Hiki iā ia ke mālama i ka ikaika kiʻekiʻe i ka mahana wela. ʻO ka mea ʻoi aku ka nui o ka coefficient friction haʻahaʻa a me ka hana lubrication maikaʻi ma mua o ka lubricant paʻa paʻa.
Ma ka lā mua o Kēkēmapa 2005, ua hoʻopuka ke Kuhina ʻEpekema a me ʻenehana i kā mākou ʻāina i kahi ikaika: ʻo ia me nā kuleana waiwai kuʻuna kūʻokoʻa, Ti3SiC2 conductive ceramic production o kahi hanauna hou o ka wikiwiki wikiwiki wikiwiki i ka papahana kaiaulu 863 , kiʻekiʻe kumuhana kumuhana kiʻekiʻe, ua hoʻomohala 'ia ka home me ke kālā mai ka papahana e hana i ke kulanui o Beijing jiaotong ma hope o ʻelua mau makahiki i ka lanakila ʻana e lanakila ai i ka Ti3SiC2 kiʻekiʻe, Ti3AlC2, Ti2SnC pālolo pālolo synthesist ʻenehana, hana papa skateboard hoʻopaʻa haʻawina o ke kino a me ka kemika waiwai, skateboarding hoʻouka hoʻouka holo. Hoʻolālā maikaʻi ʻia nā papa skateboards Ti3SiC2 e kēia pūʻulu noiʻi e hōʻike me ka conductivity kiʻekiʻe, ka hopena hopena, ke kūpaʻa abrasion, ke kūpaʻa ab arcion, ka abrasion haʻahaʻa o ka uea pili, a me nā mea ʻē aʻe, e hoʻoponopono pono ana i nā pilikia e like me ka wikiwiki abrasion o ke kalapona i hoʻokumu ʻia a hoʻohana ʻia nā skateboards metallurgy pauma ma ka home a ma kahi ʻē, maʻalahi e haki, a nui ka pōʻino i ka uea hoʻopili. Ua hoʻokumu maikaʻi ʻia nā skateboards pālua Ti3SiC2 i kēlā makahiki i mea nui i ka hoʻomohala ʻana o ke ala kaʻa kiʻekiʻe ma Kina. ʻIi. ʻO nā waiwai nui o Ti3SiC2 layered ceramic material
Hoʻohui ʻo Ti3SiC2 i nā waiwai o ka ceramic a me nā metala. ʻO kona modulus elima kiʻekiʻe, kahi pae hoʻoheheʻe kiʻekiʻe a me ke kūpaʻa wela kiʻekiʻe e hōʻike i nā ʻano pālolo like. High conductivity, kiʻekiʻe laholio modulus, kiʻekiʻe pae hoʻoheheʻe a me ke kiʻekiʻe wela kumupaʻa hōʻike i kona like pālolo waiwai.
Papa 1. Nā Pono Nui o nā ceramic Ti3SiC2 (Keena wela)
Hōʻike nā noiʻi e pili ana i ke kūpale kūpale o Ti3SiC2 aia kekahi nui pohihihi pseudo-plastic
Kahi ma lalo o ka indentation o Ti3SiC2. ʻO ke kumu o Ti3SiC2 he nui ka nui o ka wai absorptionmekanism i ka wā o ka hoʻopili ʻana, e like me ka microcrack diffusion, deflection crack, huki ʻana i ka palaoa, kūlou ʻana i ka palaoa, a me nā mea ʻē aʻe, he ʻano lubricity maikaʻi kēia ʻano mea. Kēia ʻano mea i laulā noi prospect e like me kiʻekiʻe wela 'ole mea, uila uila palaki, iho-lubricating mea, wela kūkaʻi mea a pela aku. Eia nō naʻe, ʻo ka paʻakikī paʻakikī haʻahaʻa, ʻaʻa i ke kūpaʻa a me ke kūpale ʻana o nā mea pālolo i kaupalena ʻia i kāna noi i nā manawa maʻalahi e like me ke kūpaʻa ʻana o ka luhi, ʻaʻa i ke kū a me ke kūpaʻa o ka hoʻowali. Noi o Ti3SiC2 layered pālolo mea
(I) Nā noi biomedical
I ka kahua niho, pono ʻia nā mea a i ʻole nā ​​mea i hoʻohana ʻia i ka nohona waha e paʻa a paʻa i nā wā lōʻihi ma muli o ka hoʻowali ʻana. Loaʻa i ka Ti3SiC2 nā pālolo a me nā mea hao a me ka biocompatibility maikaʻi, hiki ke hoʻohana ʻia i ke kino o ke kanaka. Hiki ke hana ʻia ʻo Ti3SiC2 i nā pae o ka nui kikoʻī me ka ʻole o ka lubricant, no laila hiki ke hana ʻia i nā implants a i ʻole nā ​​prosthetics no ka hoʻohana pilikino i ka stomatology. Ma kahi kokoke i ka enamel a i ʻole dentin ma mua o ka zirconia (1.9 × 105MPa) ka hoʻonui ʻana i kona hiki no ka noi ʻana e kau a i ʻole nā ​​kalaunu kūloko. Nā mea Ti3SiC2 i loaʻa mai i nā pono pāmahana hoʻolahalaha ponoʻī i loko o nāʻiʻo porous e ʻoi aku ka maʻalahi o ka hoʻonohonoho a hoʻopaʻa iā. ʻO ka coefficient haʻahaʻa o ka hakakā e hiki ai ke hoʻopili iā ia i nā orthodontics e hoʻonui i ka slippage a hoʻemi i ke kūʻē.
ʻO ke kūpaʻa ʻaihue a me ke kūpaʻa ʻana o ka oxidation nā kūlana koʻikoʻi no ka noi ʻana o kēia mea i ka nohona waha a no kona kūpaʻa. ʻO kēia mea a me ka pauka porcelain he mau mea pālima, a ʻoi aku ka maikaʻi o kā lākou kekelē paʻa ma mua o ka metala a me ka porcelain. No laila, ʻoi aku ka ākea o ka laulā noi no ka pāpale kalaunu o loko.
Eia nō naʻe, i ka hana hoʻomākaukau i ʻike ʻia o Ti3SiC2 i kēia manawa, pono e hoʻomaikaʻi i ke kaʻina hoʻomākaukau e loaʻa ai nā poloka Ti3SiC2 maʻemaʻe, i mea e ʻike ai i nā waiwai hou aʻe a pololei o nā mea. Pono nā hale noiʻi a me nā noiʻi noiʻi e hōʻoia i ka biocompatibility a me ka hiki ke hana i nā mea.
(2) nā noi i nā pono hana hou Me ka hoʻolaha ʻana o ka ʻenehana kī ʻana i ka wikiwiki i ka ʻoihana pālolo, e pōkole ana ke kaʻina hoʻohana o nā lako hana umu a ʻoi aku ka koʻikoʻi o nā kūlana hoʻohana. No laila, pono e hoʻomaikaʻi mau i ka pale kūwaho kūwaho o nā pono hana kīwaha e hālāwai me nā pono o ka hoʻomohala ʻana o ka ʻenehana kī ʻana i ka ʻenehana pālolo.
Ma ke ʻano he kūlana kiʻekiʻe kiʻekiʻe kiʻekiʻe, he mea nui ka lako o ka umu ahi i nā huahana i puhi ʻia. ʻAʻole hopohopo nā keramika Ti3SiC2 i ka haʻalulu nui, hiki i ko lākou ʻano papa layered a me ka hana palekiko ke kiʻekiʻe ke hoʻopau i ka hopena o ke kaumaha wela.
Pono nā mea ma o △ T = 1400, ke koena o ka puhikā wela ma luna o 300MPa, ka hana kūpale kūpilikiʻi wela o ka mea ʻoi loa e hiki ke kū i ka ʻokoʻa mahana 900 ℃. I ka manawa like, loaʻa i nā kālika Ti3SiC2 ke keu pono o ke kūpaʻa kemika maikaʻi, ka hana maʻalahi a me ke kumukūʻai haʻahaʻa o nā mea maka, e hoʻolilo ia i mea pono hana umu kora e hoʻomohala ʻia.
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