| Ti-6Al-4V表面双层辉光离子渗Cr研究 |
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| 引用本文： | 张平则,李忠厚,贺志勇,徐重,张高会.Ti-6Al-4V表面双层辉光离子渗Cr研究[J].兵器材料科学与工程,2005,28(1):17-20. |
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| 作者姓名： | 张平则 李忠厚 贺志勇 徐重 张高会 |
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| 作者单位： | 太原理工大学,表面工程研究所,山西,太原,030023 |
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| 基金项目： | 国家自然科学基金，山西省自然科学基金，50271045，20031051，， |
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| 摘 要： | 利用双层辉光离子渗金属技术,在Ti-6Al-4V的表面渗入Cr元素,形成Ti-Cr阻燃合金层。系统地研究了温度、保温时间、源极电压、工件电压、极间距等工艺参数对渗层显微组织、成分及厚度的影响,得出了合理的工艺参数。870℃渗Cr 2 h,渗层厚度可达到60μm以上。阻燃合金层的成分呈梯度分布,显微组织为基体组织加少量弥散分布的Cr2Ti金属间化合物。初步阻燃试验证明,渗Cr合金层起到了预期的阻燃效果。
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| 关 键 词： | 阻燃钛合金 双层辉光离子渗金属技术 表面合金化 渗铬 |
| 文章编号： | 1004-244X(2005)01-0017-04 |
| 修稿时间： | 2004年6月28日 |
Surface chromizing of Ti- 6Al- 4V by double glow plasma surface alloying technology |
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| ZHANG Ping-ze,LI Zhong-hou,HE Zhi-yong,XU Zhong,ZHANG Gao-hui,.Surface chromizing of Ti- 6Al- 4V by double glow plasma surface alloying technology[J].Ordnance Material Science and Engineering,2005,28(1):17-20. |
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| Authors: | ZHANG Ping-ze LI Zhong-hou HE Zhi-yong XU Zhong ZHANG Gao-hui |
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| Abstract: | Cr elements have been introduced into the Ti - 6Al - 4V substrate by using double glow plasma surface alloying technology and burn - resistant alloyed layer formed on the surface. Effects of source electrode voltage, cathode voltage, temperature, air pressure, distance between two cathodes, duration on composition and case depth are studied. Suitable technical condition is obtained. After 2 h chromizing under 870℃, thickness of alloyed layer reaches to 60 μm. Composition in the alloyed surface layer gradually changes in the depth direction of the substrate and microstructure is substrate microstructure plus a few diffused Cr2Ti inter metallic. Tentative tests reveal that the chromizing alloyed layer has the function of burn - resistance. |
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| Keywords: | burn-resistant titanium alloy double glow plasma alloying technology surface alloying chromizing |
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