The Stability of Amorphous Metals in Corrosive Environments

非晶金属在腐蚀环境中的稳定性

• 批准号: 9408749
• 负责人: Ronald Latanision
• 金额: --
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-08-01 至 1997-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9408749&HistoricalAwards=false
• 关键词: Stability; Amorphous; Metals; Corrosive; Environments

9408749 Latanision Many glassy and crystalline solids produced by rapid solidification processing have remarkable mechanical, magnetic, and electrical properties and, accordingly, great potential commercial utility. Without chemical stability in the environments to which these alloys may be exposed while in service, however, their unusual properties may be lost. Some metallic glasses are more inert compared to conventionally processed alloys. The objective of the current research is to examine the corrosion resistance of such alloys and to develop a fundamental basis for understanding their behavior. Corrosion behavior of the neodymium-iron-boron alloy system is explored in alkaline environments. Its susceptibility to hydrogen damage is examined when coupled to zinc in neutral sulfates and chlorides. Transmission electron microscopy foils are employed to study preferential dissolution in this system. Results of the research should provide information for improving the corrosion resistance of these magnetically interesting rapidly-solidified alloys without compromising their magnetic properties. %%% This corrosion research program will provide information for the protection of rapidly solidified alloys which have industrially useful magnetic properties, but lack chemical stability at service environments. ***

小行星9408749 许多 玻 和 结晶固体 产生 通过 快速凝固工艺具有显著的机械、磁和电性能，因此具有巨大的商业潜力。 效用 没有 化学 稳定性 在 然而，这些合金在使用时可能暴露于其中的环境中，它们的不寻常的性能可能会丧失。 与常规加工的合金相比，一些金属玻璃更惰性。 目前研究的目的是检查这种合金的耐腐蚀性，并为理解其行为奠定基础。 研究了钕铁硼合金在碱性环境中的腐蚀行为。 它对氢损伤的敏感性进行检查时，再加上锌在中性硫酸盐和氯化物。 透射电子显微镜箔研究在这个系统中的优先溶解。 研究结果可为提高铝合金的耐腐蚀性能提供参考 这些磁性感兴趣的快速凝固合金，而不损害它们的磁性。该腐蚀研究计划将为快速凝固合金的保护提供信息，这些合金具有工业上有用的磁性，但在使用环境中缺乏化学稳定性。 ***