高纯W-Nb合金单晶的制备及组织性能研究
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摘要
采用电子束悬浮区域熔炼法生长制备出直径22 mm、长150 mm的W-Nb合金单晶棒材,对单晶的晶向偏离角、化学成分、杂质元素含量、微观组织等进行了分析。分析结果表明,单晶棒材的晶向偏离角小于8°,杂质元素总含量小于200 ppm,单晶棒材直线度较好,表面光亮、无裂纹。
The W-Nb alloy single crystal rod with diameter of 22 mm and length of 150 mm was prepared by the electron beam floating zone melting method. The misorientation angle of the single crystal, chemical composition, impurity element content and microstructure were analyzed. The analysis results show that the misorientation angle is less than 8°, and total content of impurity element is less than 200 ppm. The W-Nb alloy single crystal rods have good straightness, bright surface and no cracks.
The W-Nb alloy single crystal rod with diameter of 22 mm and length of 150 mm was prepared by the electron beam floating zone melting method. The misorientation angle of the single crystal, chemical composition, impurity element content and microstructure were analyzed. The analysis results show that the misorientation angle is less than 8°, and total content of impurity element is less than 200 ppm. The W-Nb alloy single crystal rods have good straightness, bright surface and no cracks.
引文
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[15] 徐跃,陶艳春,郝兆印,等. 粉状石墨的原材料与高温烧结微观结构研究[J]. 金刚石与磨料磨具工程,2003(1):56-59. XU Yue, TAO Yanchun, HAO Zhaoyin, et al. Research on the microstructure of raw material of graphite[J]. Diamond & Abrasives Engineering, 2003(1): 56-59(in Chinese).
[16] 胡忠武,李中奎,张清,等. 工艺参数对钼-铌合金单晶制备的影响[J]. 铸造,2006,55(3):225-229. HU Zhongwu, LI Zhongkui, ZHANG Qing, et al. Influences of technique parameters on processing Mo-Nb alloy single crystal[J]. Foundry, 2006, 55(3): 225-229(in Chinese).
[17] ZHANG Wen, GAO Xuanqiao, ZHANG Ping-xiang, et al. Nanoindentation size effect of tungsten single crystal[J]. Rare Metal Materials & Engineering, 2017, 46(12): 3 626-3 632.
[2] LIU J, ZEE R H. Growth of molybdenum-based alloy single crystals using electron beam zone melting[J]. Journal of Crystal Growth, 1996, 163(3): 259-265.
[3] ZEE R H, XIAO Z, CHIN B A, et al. Processing of single crystals for high temperature applications[J]. Journal of Materials Processing Technology, 2001, 113(1-3): 75-80.
[4] 胡忠武,李中奎,张清,等. 难熔金属及其合金单晶的发展[J]. 稀有金属材料与工程,2007,36(2):367-371. HU Zhongwu, LI Laiping, ZHANG Qing, et al. Progress on crystals of refractory metals of their alloys[J]. Rare Metal Materials and Engineering, 2007, 36(2): 367-371(in Chinese).
[5] 张清,李中奎,郑玉柱,等. 大尺寸钼-铌合金单晶的研制[J]. 稀有金属材料与工程,2006,35(12):1 948-1 951. ZHANG Qing, LI Zhongkui, ZHENG Yuzhu, et al. Development of big size molybdenum-niobium single crystal[J]. Rare Metal Materials and Engineering, 2006, 35(12): 1 948-1 951(in Chinese).
[6] LYAKISHEV N P, BURKHANOV G S. Metallic single crystals[M]. Moscow: Eliz, 2002: 4-11.
[7] 张英杰. 改善烧结料层透气性途径的探讨[J]. 南方金属,2004(3):40-42. ZHANG Yingjie. Method of improving the permeability of sinter layers[J]. Southern Metals, 2004(3): 40-42(in Chinese).
[8] 三宅雅也,姚根洪. 粉末冶金用钨钼合金粉末及粉末冶金制品[J]. 稀有金属材料与工程,1988,17(5):74-75. MASANARI Miyake, YAO Genhong. Tungsten, molybdenum alloy powder and products in powder metallurgy[J]. Rare Metal Materials and Engineering, 1988, 17(5): 74-75(in Chinese).
[9] 潘金生,仝建民,田民波. 材料科学基础[M]. 北京:清华大学出版社,1998:15-16.
[10] 孟小凡,崔广霁,李嘉璋,等. 用电子束蒸发制作Nb超导薄膜和Nb隧道结[J]. 低温物理,1984(1):25-34. MENG Xiaofan, CUI Guangqi, LI Jiazhang, et al. Fabrication of Nb superconducting films and Nb josephson tunnel junctions by electron-beam evaporation[J]. Acta Physica Temperature Humilis Sinica, 1984(1): 25-34(in Chinese).
[11] 王鸿业,陈宇红,白掌军,等. 粉末冶金法制备Ta-W-Si合金[J]. 粉末冶金技术,2018(1):67-72. WANG Hongye, CHEN Yuhong, BAI Zhangjun et al. Preparation of Ta-W-Si alloy by power metallurgy method[J]. Powder Metallurgy Technology, 2018(1): 67-72(in Chinese).
[12] 雷乃清,朱纪法. 烧结混料机启动困难的原因分析及解决方法[J]. 矿山机械,2005(10):132-133. LEI Naiqing, ZHU Jifa. Analysis on causes of starting difficulty of sintering mixer and its solution[J]. Mining & Processing Equipment, 2005(10): 132-133(in Chinese).
[13] 刘志国,庄育智. 高比重钨合金的低温烧结[J]. 稀有金属,1995(3):168-172. LIU Zhiguo, ZHUANG Yuzhi. Low temperature sintering of high specific tungsten alloys[J]. Rare Metals, 1995(3): 168-172(in Chinese).
[14] 张药西. 低温烧结铁氧体粉料的最新进展[J]. 电子元件与材料,2001,20(1):25-29. ZHANG Yaoxi. Study on the electrical properties of the grain boundary of ZnO varistor[J]. Electronic Components & Materials, 2001, 20(1): 25-29(in Chinese).
[15] 徐跃,陶艳春,郝兆印,等. 粉状石墨的原材料与高温烧结微观结构研究[J]. 金刚石与磨料磨具工程,2003(1):56-59. XU Yue, TAO Yanchun, HAO Zhaoyin, et al. Research on the microstructure of raw material of graphite[J]. Diamond & Abrasives Engineering, 2003(1): 56-59(in Chinese).
[16] 胡忠武,李中奎,张清,等. 工艺参数对钼-铌合金单晶制备的影响[J]. 铸造,2006,55(3):225-229. HU Zhongwu, LI Zhongkui, ZHANG Qing, et al. Influences of technique parameters on processing Mo-Nb alloy single crystal[J]. Foundry, 2006, 55(3): 225-229(in Chinese).
[17] ZHANG Wen, GAO Xuanqiao, ZHANG Ping-xiang, et al. Nanoindentation size effect of tungsten single crystal[J]. Rare Metal Materials & Engineering, 2017, 46(12): 3 626-3 632.