| 高压处理对La62.0Al15.7(Cu,Ni)22.3非晶合金显微组织和腐蚀行为的影响 |
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| 引用本文： | 万小军,王锋华,林建国. 高压处理对La62.0Al15.7(Cu,Ni)22.3非晶合金显微组织和腐蚀行为的影响[J]. 中国有色金属学报, 2011, 21(5) |
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| 作者姓名： | 万小军 王锋华 林建国 |
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| 作者单位： | 1. 湖南城市学院物理与电信工程系,益阳,413000;湘潭大学材料与光电物理学院,湘潭,411105
2. 湘潭大学材料与光电物理学院,湘潭,411105 |
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| 基金项目： | 湖南省科技计划资助项目 |
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| 摘 要： | 采用电弧熔炼铜模吸铸法制备La62.0Al15.7(Cu,Ni)22.3非晶合金,在室温下对该非晶合金进行高压处理(压力为3-5 GPa),研究高压处理对非晶合金显微组织的影响;并对非晶合金在3.5%NaCl溶液中的电化学性能进行测试.结果表明:室温下的高压处理使该非晶合金发生结构驰豫,从而导致其玻璃转变温度、第一晶化温度及驰豫激活体积发生改变;高压处理后,非晶合金的自腐蚀电位增加,自腐蚀电流密度减小,临界点蚀电位下降,因此,高压处理提高该了非晶合金的抗均匀腐蚀能力,但降低了其抗点蚀的能力.
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| 关 键 词： | 非晶合金 高压处理 电化学腐蚀 |
Effects of high pressure treatment on microstructure and corrosion behavior of La62.0Al15.7(Cu,Ni)22.3 amorphous alloy |
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| WAN Xiao-jun,WANG Feng-hua,LIN Jian-guo. Effects of high pressure treatment on microstructure and corrosion behavior of La62.0Al15.7(Cu,Ni)22.3 amorphous alloy[J]. The Chinese Journal of Nonferrous Metals, 2011, 21(5) |
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| Authors: | WAN Xiao-jun WANG Feng-hua LIN Jian-guo |
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| Affiliation: | WAN Xiao-jun1,2,WANG Feng-hua2,LIN Jian-guo2(1.Department of Physics and Telecommunication Engineering,Hunan City University,Yiyang 413000,China,2.Faculty of Material and Photoelectronic Physics,Xiangtan University,Xiangtan 411105,China) |
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| Abstract: | The La62.0Al15.7(Cu,Ni)22.3 amorphous alloy was prepared by the injection of liquid alloy into a copper mould.The alloy was treated under high pressures in the range of 3.0-5.0 GPa at room temperature,and the effects of the high pressure treatment on the microstructure of alloys were investigated.The corrosion behavior of the alloy electrolyte was measured in 3.5% NaCl by the electrochemical method.The results indicate that the high pressure treatment at room temperature causes the structural relaxation of ... |
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| Keywords: | amorphous alloy high pressure treatment electrochemical corrosion |
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