锆基大块非晶合金及其晶化合金在0.5mol/L H<sub>2</sub>SO<sub>4</sub>中的腐蚀行为研究

何顺荣; 蔡礼平; 马中锋; 程曙霞; 陈树榆

doi:10.19515/j.cnki.1003-1545.2010.04.004

锆基大块非晶合金及其晶化合金在0.5mol/L H₂SO₄中的腐蚀行为研究

1. 合肥工业大学材料科学与工程学院, 安徽合肥 230009;
2. 中国科学技术大学热科学与能源工程系, 安徽合肥 230027;
3. 中国科学技术大学理化中心, 安徽合肥 230026

详细信息

作者简介:
何顺荣,男,1960年生,江西省南昌市人,副教授,硕士生导师。Email:hesr@mail.ustc.edu.cn。

中图分类号: TG174
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出版历程
- 收稿日期: 2009-12-03
- 网络出版日期: 2024-03-28

The Corrosion Resistance of Zr-based Bulk Metallic Glasses and Its Crystalline States in 0.5mol/L H₂SO₄ Solution

1. School of Materials Science and Engineering of HFUT, Hefei 230009, China;
2. Department of Thermal Science and Energy Engineering of USTC, Hefei 230027, China;
3. Center for Physical Science, University of Science and Technology of China, Hefei 230026, China

摘要

摘要: 根据合金的DSC曲线制定了Zr₆₀Al₁₅Ni₂₅、Zr_52.5Al₁₀Ni₁₀Cu₁₅Be_12.5和Zr₆₅Al₁₀Ni₁₀Cu₁₅等锆基大块非晶合金的等温退火工艺,获得了与非晶态合金具有相同成分的晶化合金。通过研究非晶态合金和晶化合金在0.5mol/L H₂SO₄中的极化曲线,结合扫描电镜(SEM)和能量散射X射线谱(EDS)分析,发现,在0.5mol/L H₂SO₄中非晶态合金和晶化合金都具有非常优异的耐腐蚀性能,但非晶合金的耐腐蚀性能要比晶化合金稍好。这主要是因为晶态合金的结构中不存在晶界、位错等缺陷,同时非晶态合金中的组元具有很高的活性,使合金更快地进入钝态。
- 大块非晶 /
- 晶化 /
- 耐腐蚀性
Abstract: Crystalline alloys were obtained by isothermal annealing on the basis of the DSC of Zr₆₀Al₁₅Ni₂₅、Zr_52.5Al₁₀Ni₁₀Cu₁₅Be_12.5 and Zr₆₅Al₁₀Ni₁₀Cu₁₅ bulk metallic glasses.The analysis of polarization curves of BMGs and its crystalline states,combining SEM and EDS observation,SEM and EDS indicated that in 0.5mol/L H₂SO₄,both the BMGs and their crystalline alloys have a very good corrosion resistance.Compared with crystalline alloys,the BMGs have a better performance,it is due to the lack of grain boundaries,dislocations and other defects,and the higher active elements in the BMGs,the faster the alloys to passive state.
- Bulk metallic glass /
- Crystalline /
- Corrosion resistance