Aluminium Boride phofo, AlB2

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Aluminium Boride phofo, AlB2

Aluminium boride (AlB2) ke mofuta oa motsoako oa binary o entsoeng ka aluminium le boron.

Ke bohlooho bo bofubelu bo bofubelu tlas'a mocheso o tloaelehileng le khatello. E tsitsitse ka asiti e batang e batang, 'me e bole ka asiti e chesang ea hydrochloric le acid ea nitric. Ke e 'ngoe ea metsoako e' meli ea aluminium le boron.


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LBH

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Morero oa limolek'hule  AB2
Nomoro ea CAS  12041-50-8
Mekhoa  e ntšo le ea bohlooho phofo
Ho teteana  3.19 g / cm3
Qhibiliha  1655C
Sebelisa  Cermet

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Aluminium borate (AlB2) ke mofuta oa motsoako oa binary o entsoeng ka aluminium le boron. Ke bohlooho bo bofubelu bo bofubelu tlas'a mocheso o tloaelehileng le khatello. E tsitsitse ka har'a asiti e batang e batang, 'me e bole ka asiti e chesang ea hydrochloric le acid ea nitric. Ke e 'ngoe ea metsoako e' meli ea aluminium le boron. E 'ngoe ke alb12, eo hangata e bitsoang aluminium borate. Alb12 ke kristale e ntšo e benyang e benyang e nang le matla a khoheli a 2.55 (18 ℃).

Ha e kenelle ka metsing, asiti le alkali. E bola ka asiti e chesang ea nitric mme e fumanoa ka ho qhibiliha boron trioxide, sebabole le aluminium hammoho.

Ka sebopeho, liathomo tsa B li etsa li-graphite flakes tse nang le liathomo tsa Al lipakeng tsa tsona, tse ts'oanang haholo le sebopeho sa magnesium diboride. Kristale e le 'ngoe ea AlB2 e bonts'a ts'ebetso ea tšepe haufi le axis e tšoanang le sefofane se mahlakore a tšeletseng sa substrate. Likarolo tsa boron aluminium li matlafatsoa ke boron fiber kapa boron fiber e nang le seaparo se sireletsang.

Boleng ba molumo oa fiber ea boron e ka ba 45% ~ 55%. Matla a khoheli a tlase, thepa e phahameng ea mochini. Matla a longitudinal tensile le modulus ea elastic ea unidirectional e matlafalitsoeng boron aluminium composite e ka ba 1.2 ~ 1.7gpa le 200 ~ 240gpa, ka ho latellana.

Modulus le bolelele bo ikhethang ba bolelele ba bolelele ba 3 ~ 5 le makhetlo a 3 ~ 4 a titanium alloy duralumin le alloy steel, ka ho latellana. E sebelisitsoe ho li-fan fan tsa turbojet, likoloi tsa Aerospace le meaho ea satellite. Mokhoa o chesang o hatellang oa ho kopanya o sebelisetsoa ho etsa lipoleiti, lifaele le likarolo tse nang le libopeho tse rarahaneng, 'me mokhoa o tsoelang pele oa ho lahla o ka sebelisoa ho etsa lifaele tse fapaneng.

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