Aluminium diboride AlB2 hmoov

 1, Siv los ua cov khoom siv semiconductor rau kub kub rectifier, cov khoom siv doped, cov khoom siv raj, cov khoom siv cathode thiab kub kub nuclear reactor neutron absorbing khoom.

2, Cov hlau tshwj xeeb no muaj kev hnav zoo, tiv thaiv tshav kub, tiv thaiv oxidation, tiv thaiv thiab kub muaj kev sib raug zoo. tshuaj tsuag cov cuab yeej siv tshuaj. Nws kuj tuaj yeem siv los ua cov ntaub ntawv tsis muaj zog super-nyuaj.

3, tuaj yeem hloov cov ntawv silicon steel, ntau dua 50% kev txuag hluav taws xob.

4, muaj ib daim ntawv thov nyob rau hauv lub nuclear kev lag luam, foob pob ua ntxaij nozzles, kub bearings, thermoelectric tiv thaiv raj, nws pib qhov chaw thiab lwm yam manufacturing.

Aluminium borate (AlB2) yog ib hom binary compound tsim los ntawm txhuas thiab boron.

Nws yog grey liab khoom nyob rau hauv ib txwm kub thiab siab. Nws yog ruaj khov nyob rau hauv txias dilute

acid, thiab decomposed nyob rau hauv kub hydrochloric acid thiab nitric acid. Nws yog ib qho ntawm ob

sib xyaw ntawm aluminium thiab boron. Lwm qhov yog alb12, uas feem ntau hu ua txhuas

borate. Alb12 yog ib tug dub lustrous monoclinic siv lead ua nrog lub ntiajteb txawj nqus ntawm 2.55 (18 ℃).

Nws yog insoluble hauv dej, acid thiab alkali. Nws decomposes hauv kub nitric acid thiab tau txais

los ntawm melting boron trioxide, sulfur thiab txhuas ua ke.

Hauv cov qauv, B atoms tsim graphite flakes nrog Al atoms ntawm lawv, uas yog heev

zoo ib yam li cov qauv ntawm magnesium diboride. Ib leeg siv lead ua ntawm AlB2 qhia tau hais tias hlau

conductivity raws axis parallel mus rau hexagonal dav hlau ntawm lub substrate. Boron

aluminium composites yog txhawb los ntawm boron fiber los yog boron fiber nrog tiv thaiv txheej.

Cov ntsiab lus ntawm boron fiber ntau yog li 45% ~ 55%. Tsawg lub ntiajteb txawj nqus, siab

mechanical zog. Lub longitudinal tensile lub zog thiab elastic modulus ntawm unidirectional

reinforced boron aluminium composite yog hais txog 1.2 ~ 1.7gpa thiab 200 ~ 240gpa, feem.

Lub longitudinal tshwj xeeb elastic modulus thiab lub zog tshwj xeeb yog hais txog 3 ~ 5 zaug thiab

3 ~ 4 zaug ntawm titanium alloy duralumin thiab hlau alloy, feem. Nws tau siv nyob rau hauv

turbojet cav kiv cua hniav, aerospace tsheb thiab satellite qauv. Kub nias

diffusion bonding txoj kev yog siv los tsim daim hlau, profiles thiab qhov chaw nrog complex

cov duab, thiab nruam casting txoj kev kuj tseem siv tau los tsim ntau yam profiles.