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Cleaner metals for industrial exploitation. Study of inclusions in technical aluminium : zaključno poročilo o rezultatih raziskovalnega projekta v letu 2001
Torkar, Matjaž
Vključki stalno nastajajo in se odstranjujejo med postopkom proizvodnje aluminija in vplivajo na njegovo preoblikovalnost, deformabilnost in odpornost proti koroziji, medtem ko elementi v trdni ...raztopini povečujejo napetostno utrjevanje. Razumljivo je, da čistost materiala, ki je sedaj sprejemljiva, ne bo zadoščala zahtevam novih standardov v bodočnosti. V vzorcu aluminija vzetem iz elektrolizne celice so bili prisotni vključki ▫$Al_{4}C_{3}$▫, SiAlC in ▫$Al_{2}O_{3}$▫, v vzorcu vzetem iz kontinuirno ulitega traku pa ▫$Al_{4}C_{3}$▫, SiAlC, ▫$Al_{2}O_{3}$▫, CaAlOC in CaSiOC. Poleg tega se opazi tudi več kompleksnih vključkov, ki jih literatura ne omenja: AlCaSiKNaClSC, AlCaSiOC, AlTiV, CaK(AlSi)ClC. Razporeditev vključkov, njihovo število in velikost kažejo, da so vključki v aluminiju vzetem iz elektrolizne celice, manj številni in večji v primerjavi z vključki iz kontinuirno ulitega traku. Po rafinaciji so vključki manjši in bolj številni. To potrjuje našo domnevo, da iz stališča vključkov, postopek rafinacije onesnaži elektrolizni aluminij.
Type of material - research report
Publication and manufacture - Ljubljana : Inštitut za kovinske materiale in tehnologije, 2001
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