| Y_2O_3对锌熔再生硬质合金组织及性能的影响 |
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| 引用本文： | 杨海林,周雪安,赵万军,阮建明.Y_2O_3对锌熔再生硬质合金组织及性能的影响[J].硬质合金,2010,27(2):65-70. |
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| 作者姓名： | 杨海林 周雪安 赵万军 阮建明 |
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| 作者单位： | 中南大学粉末冶金国家重点实验室,湖南,长沙,410083 |
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| 摘 要： | 以锌熔回收的WC为原料制备YG8硬质合金以及添加稀土氧化物的YG8-RE合金,通过金相、SEM分析了稀土氧化物的作用机理。研究发现,添加稀土氧化物能改善合金的晶粒均匀性和孔隙度,提高合金的性能。添加稀土氧化物能够使得合金粘结相中α-Co的稳定性增强,并使断裂方式发生改变,提高了合金强度。
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| 关 键 词： | 硬质合金 再生WC 稀土Y2O3 孔隙 |
Influence of Y2O3 on Microstructure and Properties of Cemented Carbide Produced from Zinc-Fusion Reclaimed Material |
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| Yang Hailin,Zhou Xuean,Zhao Wanjun,Ruan Jianming.Influence of Y2O3 on Microstructure and Properties of Cemented Carbide Produced from Zinc-Fusion Reclaimed Material[J].Cemented Carbide,2010,27(2):65-70. |
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| Authors: | Yang Hailin Zhou Xuean Zhao Wanjun Ruan Jianming |
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| Affiliation: | Yang Hailin Zhao Wanjun Zhou Xuean Ruan Jianming(State Key Laboratory of Powder Metallurgy,Central South University,Changsha Hunan 410083,China) |
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| Abstract: | The YG8 and the adding rare earth oxides YG8-RE cemented carbide are fabricated by melting zinc recovery WC as raw material. It is found that the performances of alloys are improved by adding rare earth oxides. In particular, the alloy grain uniformity and porosity are better improved. Furthermore, the mechanism of adding rare earth oxides Y,.O3 is investigated by metallography and SEM. The stability of a-Co in bonded phase is enhanced by adding rare earth oxides Y2O3, which results in the change of the fracture mode. Thus, to some extent, the strength of the alloy is improved. |
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| Keywords: | cemented carbide reclaimed WC rare earth oxides Y2O3 porosity |
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