Formation of the metastable FCC phase by ball milling and annealing of titanium-stearic acid powder

被引：25
作者：
Bolokang, A. S. [1 ,2 ,3 ]
Motaung, D. E. [2 ]
Arendse, C. J. [1 ]
Muller, T. F. G. [1 ]
机构：
[1] Univ Western Cape, Dept Phys, ZA-7535 Bellville, South Africa
[2] CSIR, DST CSIR Natl Ctr Nanostruct Mat, ZA-0001 Pretoria, South Africa
[3] Transnet Engn, Prod Dev, ZA-0127 Kilnerpark, South Africa
来源：
ADVANCED POWDER TECHNOLOGY | 2015年 / 26卷 / 02期
基金：
新加坡国家研究基金会;
关键词：
Ball milling; Stearic acid; Sintering; FCC; TiCx; PROCESS-CONTROL AGENT; MECHANICAL-PROPERTIES; TI; TRANSFORMATION; DIFFRACTION;
D O I：
10.1016/j.apt.2015.01.013
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Ball milling of titanium mixed stearic acid yields the formation of the metastable face centred cubic phase upon sintering and water quenching at 1200 degrees C. Structural transformation was traced by the X-ray diffraction technique. Phase transformations were investigated by differential scanning calorimetry in flowing argon gas. The optical microstructure illustrated the needle and lath type morphology attributable to nonstoichiometric titanium hydride phase. In addition, the microstructure monitored by the scanning electron microscopy show the nonstoichiometric titanium carbide phase segregating along the grain boundaries. As a result, high average hardness value of 654 and 670 Vickers hardness was measured for sintered and quenched 15 h milled titanium-stearic acid. (C) 2015 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.
引用
收藏
页码：632 / 639
页数：8
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