A cikin ƙirar PCB na lantarki mai ƙarfi, zaɓar kayan da suka dace yana da mahimmanci. Daga cikin zaɓuɓɓukan da ake da su daban-daban, aluminum oxide (Al2O3) ya fito waje a matsayin kyakkyawan zaɓi don PCB yumbu saboda fitattun kaddarorin thermoelectric. Duk da haka, ba duk abubuwan da ke cikin aluminum oxide ba ne aka halicce su daidai. A cikin wannan da kuma labaran labarai da yawa masu zuwa, za mu shiga cikin bambance-bambancen bambance-bambance tsakanin kayan bambance-bambancen guda biyu: 96% aluminum oxide da 99% aluminum oxide. Za mu bincika keɓancewa da fa'idodin kayan biyu daban-daban.
Da farko, bari mu fahimci menene aluminum oxide.
Aluminum oxide yumbu substrates sun ƙunshi fari amorphous foda, wanda aka fi sani da aluminum oxide ko kuma kawai Al2O3. Yana da nauyin gram 3.9-4.0 akan centimita mai siffar sukari da kuma wurin narkewa na 2050 ° C, tare da wurin tafasa na 2980 {90}02} {910} 9408014} C.
Aluminum oxide ba shi da narkewa a cikin ruwa kuma yana nuna kyakkyawan aiki a aikace-aikace daban-daban. An rarraba yumburan oxide na alkama na yau da kullun bisa abubuwan da ke cikin su na Al2O3, gami da 99%, 95%, 90%, 96%, 85%, da kuma wasu lokuta bambance-bambancen tare da 80% ko 75% aluminum oxide.
99% aluminum oxide yana nufin aluminum oxide tare da tsarki na 99.5% ko 99.8%. Fari ne ko na hauren giwa a launi kuma yana da kyawawan halaye kamar girman juriya, juriya ga lalatawar acid da alkali, da ikon jure yanayin zafi na 1600-1700 digiri Celsius. Bugu da ƙari, yana nuna kyakkyawan kwanciyar hankali na sinadarai, babban rufin wutar lantarki, ƙarfin talla mai ƙarfi, da juriya. Saboda haka, 99% aluminum oxide ana amfani da ko'ina a daban-daban aikace-aikace, ciki har da fitilu fitilu, lantarki na'urorin, sandblasting nozzles, mota sassa, da lalacewa-resistant sassa.
A gefe guda, 96% aluminum oxide yana da ɗan ƙaramin tsarki fiye da 99% aluminum oxide amma har yanzu yana ba da kyakkyawan yanayin zafin zafi da kaddarorin rufewa yayin da yake da tsada.
Don haka, 99% aluminum oxide da 96% aluminum oxide sune mafi yawan kayan da aka fi amfani da su a cikin yumbu PCB, kuma a labarin labarai na gaba, za mu mayar da hankali kan koyon bambance-bambancen da ke tsakanin su biyun.
