在金属固体溶液中,光激活生长和转基因稳定阶段过渡
Andrew Martin1,2, Alana M Pauls1,2, Boyce Chang2
1North Carolina State University, Department of Materials Science and Engineering, Raleigh, NC, 27695, USA.
Advanced materials (Deerfield Beach, Fla.)
|December 3, 2023
概括
这项研究展示了一种新的金属激光加工技术,利用金属稳定状态来实现独特的材料特性. 该方法可以精确控制组合和结构,创造稳定,富含能量的材料.
科学领域:
- 材料科学 材料科学 材料科学
- 激光处理 激光加工
- 凝聚物质物理学 凝聚物质物理学
背景情况:
- 金属通常通过激光加工中的加热进行相位转换,受低吸收性限制.
- 超稳定状态为材料操纵提供独特的能量和结构性质.
- 利用这些状态可以通过选择性刺激调整能量景观.
研究的目的:
- 为了展示一种新的激光加工方法,使用金属中的元稳定状态.
- 为了稳定低冷的金属状态,使用薄型被动化氧化物.
- 为了诱导受控的相位过渡,并创建具有不对称组成的转移稳定的固体.
主要方法:
- 使用薄型被动化氧化物稳定低冷金属状态.
- 为了诱导马兰戈尼流动,对近地表面的光扰动.
- 控制边缘凝聚和相位过渡到转移稳定的固体.
主要成果:
- 成功稳定了低冷的金属状态.
- 诱导对流的马兰戈尼流和边缘凝聚.
- 形成具有不对称的近表面和核心组成的转移稳定的固体.
- 展示一种自我终止的过程,创建具有高放松能量屏障的封闭系统.
结论:
- 开发的激光处理技术使得金属中能够创建深度金属稳定状态.
- 这种方法可以精确控制材料的成分和结构.
- 自动终止过程确保了长时间的系统稳定性.
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