Proceedings of the Korean Powder Metallurgy Institute Conference (한국분말야금학회:학술대회논문집)
- 2006.09a
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- Pages.109-110
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- 2006
Effect of C/Ti Atomic Ratio of TiCx Raw Powder on the Properties of Ti-Mo-W-TiC Sintered Hard Alloy
- Nakahara, Kenji (Nippon Tungsten Co., Ltd.) ;
- Sakaguchi, Shigeya (Nippon Tungsten Co., Ltd.)
- Published : 2006.09.24
Abstract
We have studied the effect of C/Ti atomic ratio of TiCx (x=0.5, 0.75 and 1.0) raw powder on the properties of the Ti-Mo-WTiC sintered hard alloy. The decrease of C/Ti atomic ratio accelerated the densification in the sintering process. The hardness was remarkably improved up to 1350HV with decreasing the C/Ti atomic ratio because of increase of TiCx phase volume content and its fine dispersion. From the results of electro-chemical tests in acid and 3% NaCl solutions, it was obvious that every alloy had excellent corrosion resistance, which meant about 200 times better than that of WC-Co cemented carbide.
Keywords
- Ti-Mo-W-TiC sintered hard alloy;
- C/Ti atomic ratio of TiCx raw powder;
- wear and corrosion-resistance