3303,441,553 silicon metal additive for aluminium alloy casting

Tshebetso:

Silicon metal e ka hlophisoa ho ea ka litaba tsa litšila tse tharo tse kholo tsa tšepe, aluminium le calcium tse teng ho eona, tse ka aroloang ka553, 441, 411, 421, 3303,etc. mephato e e farologaneng.
Liindasteri, silicon ea tšepe hangata e hlahisoa ka ho fokotsa silika ka carbon hosebopi sa motlakase.
Chemical reaction equation: SiO2 + 2C → Si + 2CO

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Ka indasteri, silicon ea tšepe hangata e hlahisoa ka ho fokotsa silika ka carbon ka sebōping sa motlakase.

Chemical reaction equation: SiO2 + 2C→Si + 2CO

Ho hloeka ha silicon e fumanoang ka tsela ena ke 97 ~ 98%, e bitsoang tšepe ea silicon.E ntan'o qhibiliha ebe e tsosolosoa hape, 'me litšila li tlosoa ka acid ho fumana silicon ea tšepe e nang le bohloeki ba 99.7 ~ 99.8%.

Sebopeho sa silicon ea tšepe ke haholo-holo silicon, kahoo e na le thepa e tšoanang le ea silicon.
Silicon e na le li-allotrope tse peli:silicon ea amorphous le silicon ea kristale.

Amorphous silicon kephofo e putsoa-e ntšoha e le hantle ke microcrystal.

Silicon ea kristale e na lesebopeho sa kristalelesemiconductor thepa ea daemane, thesebaka se qhibilihang ke 1410°C, ntlha e belang ke 2355 ° C, ho thatafala ha Moh ke 7, 'me e brittle.Silicon ea amorphous e sebetsa ka lik'hemik'hale 'me e ka khonachesa ka matla ka oksijene.E sebetsana le dimetale tse kang halogen, nitrogen le carbon mochesong o phahameng, mme e ka boela ya kopana le dimetale tse kang magnesium, calcium le iron ho etsa silicide.Silicon ea amorphous e batla e sa qhibilihe ka har'a li-inorganic le organic acid ho kenyelletsa hydrofluoric acid, empa e qhibiliha ka acid e tsoakiloeng ea asiti ea nitric le hydrofluoric acid.Tharollo e tebileng ea sodium hydroxide e ka qhala silicon ea amorphous mme ea lokolla hydrogen.Silicon ea crystalline ha e sebetse, ha e kopane le oksijene esita le mocheso o phahameng, ha e qhibilihe ka har'a asiti leha e le efe ea inorganic le organic acid, empa e qhibiliha ka acid e tsoakiloeng ea nitric acid le hydrofluoric acid le concentrated sodium hydroxide solution.

Palo e kholo ea silicon e sebelisoa bakeng sa ho qhibilihisa motsoako oa ferrosilicon e le motsoako oa motsoako indastering ea tšepe le ea tšepe, hape e le ntho e fokotsang ho qhibilihisa mefuta e mengata ea litšepe.Silicon hape ke karolo e ntle ea lialloys tsa aluminium, 'me boholo ba lisebelisoa tsa aluminium tse entsoeng ka tšepe li na le silicon.