稀土CE对纯铜造的微观结构和性能的影响
Mingyi Zhang1,2,3, Jichun Yang1,2, Haixiao Li4
1School of Rare Earth Industry, Inner Mongolia University of Science and Technology, Baotou 014010, China.
Materials (Basel, Switzerland)
|May 25, 2024
概括
稀土 (Ce) 的添加有效地通过去除氧和硫来净化纯铜. 这显著增强了铜.
科学领域:
- 材料科学 材料科学 材料科学
- 金工业是金工业的一个方面.
- 物理化学 物理化学
背景情况:
- 造纯铜通常含有氧和硫等杂质.
- 这些杂质会对铜的机械性能和微观结构产生负面影响.
- 了解杂质去除机制对于改善铜质量至关重要.
研究的目的:
- 为了研究稀土 (Ce) 对纯铜造的微观结构和性能的影响.
- 确定Ce在铜中脱氧和脱硫的热力学可行性.
- 量化Ce添加后机械性能的改进.
主要方法:
- 热力学计算 (吉布斯自由能量)
- 进行X射线衍射 (XRD) 分析.
- 机械测试 (拉力强度,延长)
- 金属学显微镜的使用方法
- 扫描电子显微镜 (SEM) 的使用
主要成果:
- 表现出强大的热力学驱动力去氧化和脱硫铜.
- 在Cu中的Ce的最大固体溶解度在0.009%和0.01%之间.
- 这种添加细化了柱状颗粒,并扩大了等轴颗粒.
- 拉力强度增加了8.45%,延长了12.1%,微硬度增加了10.5% (73.5HV到81.2HV).
结论:
- 稀土有效地从纯铜造中去除氧和硫.
- 添加精炼了铜的粒度结构.
- 机械性能,包括抗拉强度,延伸度和微硬度,由显著增强.
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