ʻO ka carbon titanium aluminika, Ti3AlC2

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ʻO ka carbon titanium aluminika, Ti3AlC2

ʻO ka Titanium-aluminika carbide (TI-Al carbide) kahi ʻano hou o ʻekolu mau papa o nā mea ceramic, i hopohopo nui ʻia e nā ʻepekema a me nā physicists ma muli o kāna mau waiwai kū hoʻokahi.


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ʻO ka Titanium-aluminika carbide (TI-Al carbide) kahi ʻano hou o ʻekolu mau papa o nā mea ceramic, i hopohopo nui ʻia e nā ʻepekema a me nā physicists ma muli o kāna mau waiwai kū hoʻokahi.
ʻO ka titanium aluminika carbide (Ti3AlC2) pili i ka ʻōnaehana aniani hexagonal, a he ʻano like me nā metala a me nā keramika: like ka conductivity a me ka conduction wela e like me ka mea hao, akā he ʻano like me ka modulus elima kiʻekiʻe a me nā pono mechanical mehana kiʻekiʻe e like me ka ceramic. , me ka conductivity maikaʻi a me ka hiki ke hoʻoheʻe i ka wela, ke kiʻekiʻe uila elima a me ka paakiki o Vickers haʻahaʻa, a me ka hiki ke kūpaʻa maikaʻi maikaʻi. Hiki ke mīkini ʻia i ka mahana o ka lumi a hana i ka deformation ea ma ke ana wela kiʻekiʻe. Loaʻa iā ia kahi kūpaʻa wela kiʻekiʻe maikaʻi a me ke kūpaʻa kūpale Loaʻa iā ia kahi kūpikipiki kūpale kūpale maikaʻi, kūpaʻa hōʻino a me ke kūpaʻa kūpahū ʻino maikaʻi.
ʻO nā ceramic pae MAX (me Ti3SiC2, Ti3AlC2, a me nā mea ʻē aʻe) kahi ʻano hou o nā ceramic conductive i hiki ke hoʻoliʻiliʻi ʻia. Aia i loko o kēia mau keramika ma mua o kanaonokū mau makahiki o nā karbides a i ʻole nā ​​nitrides. Kū ʻo M i ka mea hao mua o ka hui hoʻololi; Hōʻike ʻo A i nā mea o ka hui nui, nā mea nui o ka hui ʻekolu a me ka pūʻulu ʻehā; ʻO X no carbon a nitrogen paha.

ʻO Ti3SiC2 ka mea i aʻo nui ʻia. Ua hana maikaʻi ʻia ʻo Ti3SiC2 e kaomi wela ma 1996 e Professor Barsoum M o ke Kulanui ʻo Drexel ma United States a ua loaʻa nā waiwai maikaʻi loa. Ma muli o ke ʻano nanometer like ʻie o ka aniani, ʻo kēia ʻano mea pālolo he waiwai e like me ke kūpaʻa ʻana o ka oxidation, self-lubrication, paʻakikī ʻāpana kiʻekiʻe ma kahi mahana a me ka conductivity. Hiki ke hoʻohana ākea ʻia kēia ʻano mea e like me ke kiʻekiʻena hoʻolālā wela, nā mea uila uila, nā mea anticorrosive kemika a me nā mea hoʻomehana wela kiʻekiʻe. Hoʻohana nui ʻia nā huahana no nā pale wela kiʻekiʻe, MXene precursors, conductive lubricating ceramics, lithium ion batteries, supercapacitors, catalysis electrochemical.
Nā palena kikoʻī o Ti3AlC2:

'ikamu hāmeʻa
 mīkini

waiwai

ikaika compressive (MPa) 764
anuenue ikaika (MPa) 375 ± 15
uhai i ka ulia (MPa ?? m1 / 2) 7.2
ʻOʻoleʻa Vickers (GPa) 3.5
Hoʻololi ʻōpio (GPa) 297
uilawaiwai Hoʻokahi hoʻokele (× 106S ?? m ﹣ 1) 2.9 (25 ℃)
0.85 (800 ℃)
mahana coefficient o ke kūpale (× 10﹣3K ﹣ 1) 3.1
pumehanawaiwai coefficient o ka hoʻonui hoʻonui wela

(× 10﹣6K ﹣ 1)

9.0
hiki heat J ?? mol ﹣ 1 ?? K ﹣ 1) -
wela (W ?? m ﹣ 1 ?? K ﹣ 1) -
kūpale kūpikī wela Maikaʻi
kūpaʻa wela kiʻekiʻe Maikaʻi

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