Electrodeposition of aluminium-titanium alloys from molten fluoride-oxide electrolytes

被引：8

作者：

Awayssa, Omar ^{[1
]}

Saevarsdottir, Gudrun ^{[2
]}

Meirbekova, Rauan ^{[3
]}

Haarberg, Geir Martin ^{[1
]}

机构：

[1] NTNU, Dept Mat Sci & Engn, Sem Saelands Vei 12, NO-7491 Trondheim, Norway

[2] Reykjavik Univ, Sch Sci & Engn, Menntavegi 1, IS-101 Reykjavik, Iceland

[3] Elkem, Grundartangi, Iceland

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2021年 / 123卷 / 123期

关键词：

Aluminium; Titanium; Aluminium-titanium alloys; Electrodeposition; Current efficiency;

D O I：

10.1016/j.elecom.2021.106919

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

This study reports the direct production of an aluminium-titanium alloy during aluminium electrolysis in fluoride-based melts. Experiments were conducted in a laboratory cell dedicated to current efficiency measurements. The temperature was varied from 960 to 980 degrees C at a cathodic current density (CCD) of 0.9 A/cm(2) and a cryolite ratio (CR) of 2.2. The titanium content was up to 1.0 wt%. Titanium was added in the form of a TiO2 precursor. Bath samples were collected regularly and analyzed with ICP-MS to observe the decay of titanium during electrolysis. The current efficiency for electrodeposition of Al-Ti alloys was estimated to be at least around 90%. The surface of the solidified metal deposits was mostly flat, but some deposits were partially deformed.

引用

页数：8

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