Zotayidwa titaniyamu carbide, Ti3AlC2

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Zotayidwa titaniyamu carbide, Ti3AlC2

Titaniyamu-aluminiyamu carbide (TI-Al carbide) ndi mtundu watsopano wazinthu zosanjikiza zitatu za ceramic, zomwe zakhudzidwa kwambiri ndi asayansi zakuthupi ndi mafizikiki chifukwa cha mawonekedwe ake apadera.


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Titaniyamu-aluminiyamu carbide (TI-Al carbide) ndi mtundu watsopano wazinthu zosanjikiza zitatu za ceramic, zomwe zakhudzidwa kwambiri ndi asayansi zakuthupi ndi mafizikiki chifukwa cha mawonekedwe ake apadera.
Titaniyamu aluminiyamu carbide (Ti3AlC2) ndi ya hexagonal crystal system, ndipo ili ndi mawonekedwe azitsulo ndi ziwiya zadothi: imakhala ndimayendedwe ofanana komanso otentha ngati chitsulo, komanso imakhala ndi modulus yofananira kwambiri komanso yotentha kwambiri ngati makina a ceramic , yokhala ndi magwiridwe antchito abwino komanso kutenthetsera kutentha, ma modulus otsekemera komanso kuuma kwakanthawi kwa Vickers, komanso kuthekera kolimbana ndi kuwonongeka. Itha kukhazikika pama firiji ndikupanga mapindikidwe apulasitiki kutentha kwambiri. Ilinso ndi kutentha kwabwino kwamphamvu komanso kukaniza makutidwe ndi okosijeni. Ilinso ndi kutenthetsa kwabwino kwamagetsi, kukana kuwonongeka komanso kukana kwakanthawi kwamankhwala.
MAX magawo a ziwiya zadothi (kuphatikiza Ti3SiC2, Ti3AlC2, ndi zina zambiri) ndi mtundu watsopano wa zoumbaumba zotheka. Zoumbaumba izi zimakhala ndi ma carbide kapena ma nitridi opitilira makumi asanu ndi limodzi. M amayimira chitsulo cham'mbuyo cham'gulu losintha; A imayimira zinthu za gulu lalikulu, makamaka zinthu za gulu lachitatu ndi gulu lachinayi; X ndi ya kaboni kapena nayitrogeni.

Ti3SiC2 ndiophunzira kwambiri. Ti3SiC2 idakonzedwa bwino ndikukanikiza kotentha mu 1996 ndi Pulofesa Barsoum M waku Drexel University ku United States ndipo malo ake abwino adapezeka. Chifukwa cha kapangidwe kake kosalala ka nanometer, mtundu uwu wa ceramic umakhala ndi zinthu monga kukaniza makutidwe ndi okosijeni, kudzipaka mafuta, kulimba kwakukulu kwa firiji ndi magwiridwe antchito. Zinthu zamtunduwu zitha kugwiritsidwa ntchito ngati zinthu zotentha kwambiri, zopangira ma elekitirodi, zopangira mankhwala ndi zotenthetsera kutentha kwambiri. Zogulitsazo zimagwiritsidwa ntchito popangira kutentha kwambiri, zotsogola za MXene, zopangira mafuta odzipangira okhaokha, mabatire a lithiamu ion, ma supercapacitors, electrochemical catalysis.
Magawo aluso a Ti3AlC2:

chinthu chizindikiro
 makina

katundu

kupanikizika mphamvu (MPa) 764
kupinda mphamvu (MPa) 375 ± 15
kuswa kukhazikika (MPa ?? m1 / 2) 7.2
Vickers kuuma (GPa) 3.5
Achinyamata modulus (GPa) 297
zamagetsikatundu Madutsidwe osakwatira (× 106S ?? m ﹣ 1) 2.9 mpaka 25 ℃)
0.85 (800 ℃)
kutentha koyefishienti kukana (× 10﹣3K, 1) 3.1
matenthedwekatundu koyefishienti yakukula kwamatenthedwe kupitilira kwina

(× 10﹣6K ﹣ 1)

9.0
mphamvu yotentha (J ?? mol ﹣ 1 ?? K ﹣ 1) ﹣﹣
kutentha madutsidwe (W ?? m ﹣ 1 ?? K ﹣ 1) ﹣﹣
matenthedwe kukaniza Zabwino
kutentha kwakukulu Zabwino

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