A morphological study of the FFC chromium and titanium powders

被引：43

作者：

Chen, G. ^{[1
]}

Fray, D. ^{[2
]}

机构：

[1] Univ Nottingham, Sch Chem Environm & Min Engn, Univ Pk, Nottingham NG7 2RD, England

[2] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England

来源：

TRANSACTIONS OF THE INSTITUTIONS OF MINING AND METALLURGY SECTION C-MINERAL PROCESSING AND EXTRACTIVE METALLURGY | 2006年 / 115卷 / 01期

关键词：

Particle morphology; Metal powder; Preferential growth; Titanium; Chromium; Electroreduction; Molten salt;

D O I：

10.1179/174328506X91365

中图分类号：

TD [矿业工程];

学科分类号：

0819 ;

摘要：

Microscopic morphological features of the cubic chromium and nodular titanium powders prepared by electroreduction of the respective oxides in molten salts (the FFC Cambridge process) are compared with the preferential crystal growth mechanism. The analysis leads to an understanding of determining forces for the formation of cubic particles in the chromium powders owing to preferential growth, but nodular particles in the titanium powder owing to interruption of the preferential growth by particularly oxygen atoms.

引用

页码：49 / 54

页数：6

共 26 条

[1]

[Anonymous], 1984, POWDER METALL SUPERA

[2] Direct electrochemical reduction of titanium dioxide to titanium in molten calcium chloride [J].

Chen, GZ ;

Fray, DJ ;

Farthing, TW .

NATURE, 2000, 407 (6802) :361-364

[3] Direct electrolytic preparation of chromium powder [J].

Chen, GZ ;

Gordo, E ;

Fray, DJ .

METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 2004, 35 (02) :223-233

[4]

Chen GZ, 2004, LIGHT MET, P881

[5] Voltammetric studies of the oxygen-titanium binary system in molten calcium chloride [J].

Chen, GZ ;

Fray, DJ .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2002, 149 (11) :E455-E467

[6]

Chen GZ, 2001, PROCEEDINGS OF THE 6TH INTERNATIONAL SYMPOSIUM ON MOLTEN SALT CHEMISTRY AND TECHNOLOGY, P79

[7]

Chen GZ, 2001, LIGHT MET, P1147

[8] Cathodic refining in molten salts: Removal of oxygen, sulfur and selenium from static and flowing molten copper [J].

Chen, GZ ;

Fray, DJ .

JOURNAL OF APPLIED ELECTROCHEMISTRY, 2001, 31 (02) :155-164

[9] Electrochemistry at conductor/insulator/electrolyte three-phase interlines: A thin layer model [J].

Deng, Y ;

Wang, DH ;

Xiao, W ;

Jin, XB ;

Hu, XH ;

Chen, GZ .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (29) :14043-14051

[10]

Dowson G., 1990, POWDER METALLURGY PR

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