Alpha-alumina ili ndi mankhwala okhazikika, kukana kwa dzimbiri, kuuma kwakukulu, katundu wabwino wotchinjiriza, malo osungunuka kwambiri komanso kulimba kwambiri, ndipo amagwiritsidwa ntchito m'magawo osiyanasiyana.
Kugwiritsa ntchito α-alumina ufa muzoumba
Microcrystalline alumina ceramics ndi mtundu watsopano wa zinthu zadothi zokhala ndi yunifolomu komanso wandiweyani komanso kukula kwa nano kapena sub-micron njere.Lili ndi ubwino wa mphamvu zamakina apamwamba, kukana kuvala, kukana kwa dzimbiri, kukana kwa okosijeni, kuwonjezereka kowonjezereka komanso kukhazikika kwabwino kwa kutentha.Chinthu chake chachikulu ndi chakuti kristalo yoyamba ndi yaying'ono.Choncho, luso lofunika kwambiri pakukonzekera microcrystalline alumina ceramics ndikukonzekera α-Al2O3 ufa ndi kristalo yaing'ono yapachiyambi ndi ntchito yaikulu ya sintering.α-Al2O3 ufa uwu ukhoza kukhala wandiweyani thupi la ceramic pa kutentha kochepa kwambiri.
Kugwiritsa ntchito ufa wa α-alumina muzinthu zokana
α-Al2O3 ufa ndi wosiyana mu zipangizo zotsutsa malinga ndi ntchito, ndipo zofunikira za ufa ndizosiyana.Mwachitsanzo, ngati mukufuna kufulumizitsa kachulukidwe wa zipangizo refractory, nano aluminiyamu ndiye yabwino kusankha;ngati mukufuna kukonza zowomba zowoneka bwino, muyenera α-Al2O3 ufa wokhala ndi njere zowoneka bwino, kuchepa pang'ono, komanso kukana kosinthika kolimba.Ma crystallites opangidwa ndi flake kapena mbale ndi abwino;koma ngati ndi amorphous refractory zakuthupi, α-Al2O3 chofunika kuti madzi fluidity, mkulu sintering ntchito, ndi tinthu kukula kugawa kumafuna yaikulu chochuluka osalimba, ndi zabwino-grained crystallites ndi bwino.
Kugwiritsa ntchito α-alumina ufa mu zinthu zopukutira
Ntchito zosiyanasiyana zopukuta zimafuna zipangizo zosiyanasiyana.Zogulitsa zopukutira movutikira komanso kupukuta kwapakatikati zimafunikira mphamvu yodula kwambiri komanso kuuma kwakukulu, kotero kuti mawonekedwe awo ang'onoang'ono ndi makhiristo amafunikira kukhala ovuta;α-alumina ufa wa kupukuta bwino kumafuna kuti chopukutidwacho chikhale chotsika kwambiri komanso chowala kwambiri.
Kugwiritsa ntchito α-alumina ufa muzodzaza zinthu
M'zinthu zodzaza, kuti zitsimikizire kuti zikuphatikizana bwino ndi zinthu zachilengedwe ndikuchepetsa kukhudzidwa kwa kukhuthala kwa dongosolo, chofunikira kwambiri pa α-Al2O3 ndikuti madziwo ndi abwino, makamaka ozungulira, chifukwa chapamwamba kwambiri. sphericity, pamwamba.Zing'onozing'ono mphamvu, bwino pamwamba fluidity wa mpira;chachiwiri, ufa wa α-Al2O3 wokhala ndi chitukuko cha kristalo wathunthu, chiyero chamankhwala apamwamba komanso mphamvu yokoka yeniyeni imakhala ndi matenthedwe abwinoko komanso zotsatira zabwino zikagwiritsidwa ntchito popangira zoziziritsa kukhosi komanso zopangira thermally.
Kugwiritsa ntchito α-alumina ufa mu capacitor corundum zakuthupi
M'makampani, ufa woyera wa α-alumina nthawi zambiri umatenthedwa mu ng'anjo yamagetsi yotentha kwambiri kuti apange corundum yopangira, yomwe imatchedwanso fused corundum.Nkhaniyi ili ndi makhalidwe a kuuma kwambiri, m'mphepete momveka bwino ndi ngodya, ndipo microstructure ili makamaka pafupi ndi spherical.Pogwiritsa ntchito mphesa yothamanga kwambiri, njere za abrasive zimakhala ndi mphamvu zodulira mwamphamvu, ndipo mbewu zowonongeka sizili zophweka kuswa.potero zimawonjezera moyo wake wautumiki.