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METALLOTERMIYa

metalotermiyaMETALLOTERMIYa (az metall va yun. therme — garmi), yak sohai metallurgiya buda, asosi onro istifodai prosesshoi az oksidho va payvastagihoi dig. bo metallhoi nisbatan faol (alyuminiy, magnii, silisiy va g.) barqaror kardani metallho, ki bo judoshavii garmii ziyod meguzarand, tashkil medihad. Metallotermiya vobasta ba metalli barqarorkunanda ba alyuminotermiya, magniitermiya, silikotermiya va g. judo meshavad. Navhoi zerini prosesshoi metallotermiki mavjudand: prosessi berun az kura guzaranda — in prosess dar surate guzaronda meshavad, ki garmii reaksiyai barqarorshavi baroi dar namudi moe hosil kardani mahsuloti reaksiya va bo osoni judo kardani onho kifoya ast; prosessi dar kurai elektri guzaranda — in prosessro hamon vaqt istifoda mebarand. ki garmii judoshuda baroi gudozish va tafsonishi minbadai mahsuloti gudozish kofi nest, dar in hol garmii ilovagi bo rohi garmkunii elektri doda meshavad; prosessi dar vakuum guzaranda — in prosess ba judo kardani metall doi zudbugshavanda (mas., magniy), hangomi dar sharoiti vakuum (dar haror. 800— 1400° S) barqaror kardani on joy hosil kardani metallhoi kamgaz imkoniyat medihad.

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SADUDDINI HAMMUI Muhammad ibni Juvayni

SADUDDINI HAMMUI Muhammad ibni Juvayni (soli tavallud nomalum — Vafot 1252), yake az namoyandagoni mashhuri …