کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1459347 | 989592 | 2015 | 6 صفحه PDF | دانلود رایگان |
A fine-structured TiC–Co composite was prepared from a Ti–Co alloy by high-energy milling and subsequent heat treatment. The nanosized TiC and amorphous Co powders were synthesized by mechanical alloying of a Ti–Co alloy/graphite mixture. The amorphous Co phase was crystallized during the subsequent heat treatment. The DSC study revealed that Co in the nanosized TiC–Co powders melts at a lower temperature than that in conventional mixed TiC–Co powders. The coalescence of the nanosized TiC grains was effectively suppressed by the finely-dispersed Co phases making it possible to maintain the fine microstructure throughout the liquid-sintering process. The mechanical properties of the fine-structured TiC–Co composite were superior to not only the conventionally prepared TiC–Co composite but also to the previously reported TiC–Ni composites.
Journal: Ceramics International - Volume 41, Issue 10, Part B, December 2015, Pages 14326–14331