| 微量含Si杂质对W－7Ni－3Fe高比重合金性能的影响 |
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| 引用本文： | 葛荣德,王盘新,赖和怡. 微量含Si杂质对W－7Ni－3Fe高比重合金性能的影响[J]. 材料科学与工艺, 1995, 0(1) |
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| 作者姓名： | 葛荣德 王盘新 赖和怡 |
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| 作者单位： | 中南工业大学，北京科技大学 |
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| 摘 要： | 研究了掺杂到原料钨粉中的微量含Ｓｉ杂质（ＳｉＯ２０和Ｎａ２ＳｉＯ３）对Ｗ－７Ｎｉ－３Ｆｅ高比重合金力学性能的影响。结果表明，原料钨粉中的微量含Ｓｉ杂质（掺杂量＜０．０１％）可使合金的抗拉强度，延伸率及冲击韧性有所提高。通过对合金试样断口形貌的扫描电镜（ＳＥＭ）观察及时试样断口表面的Ｘ射线光电子能谱（ＸＰＳ）分析发现，在未掺杂试样的断口表面存在少量的薄膜状ＷＯ２，掺杂微量含Ｓｉ杂质可以消除ＷＯ２薄膜。
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| 关 键 词： | 钨，高比重合金，力学性能，微量Si |
Effect of Trace Silicon Containing Impurities on the Mechanical Properties of W-7Ni-3Fe Heavy Alloy |
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| Ge Rongde,Wang Panxing,Lai Heyi. Effect of Trace Silicon Containing Impurities on the Mechanical Properties of W-7Ni-3Fe Heavy Alloy[J]. Materials Science and Technology, 1995, 0(1) |
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| Authors: | Ge Rongde Wang Panxing Lai Heyi |
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| Affiliation: | Ge Rongde;Wang Panxing;Lai Heyi(Central South University of Technology)(University of Science and Technology Beijing) |
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| Abstract: | The effect of trace silicon containing impurities,which are doped intentionally in a raw tungsten powder, on the mechanical properties of W-7Ni-3Fe heavy alloy is investigated.The results show that the tensile strength and elongation and the impact toughness of the alloy are improved in a certain degree by doping trace silicon containing impurities(the doping amount of silicon is less than 0.01%).By means of scanning electron rnicroscope(SEM)and X-ray photoelectron spectruscopy(XPS)analyses on the fracture surfaces of both doped and undoped specimens,a weak spectrum of WO2 is found on that of the undoped specimenbut not found on that of the doped specimen.It is inferred that the WO2 is in the form of thin film distributing between tungsten grains and binder phase. |
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| Keywords: | tungsten heavy alloy mechanical properties trace silicon |
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