形成的金属玻璃的形成
Jianzhong Zhang1, Yusheng Zhao
1LANSCE Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA. jzhang@lanl.gov
Nature
|July 16, 2004
概括
研究人员使用高压和低温从元素制成一个散装金属玻璃. 这种新型无形金属具有卓越的热稳定性,为先进的高温应用打开了大门.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 固态化学 固态化学
背景情况:
- 散装金属玻璃 (BMG) 是通过快速冷却液体合金制成的先进材料.
- 目前的BMG通常需要复杂的组成 (≥3个元素) 来防止结晶.
- 复杂的组成可以导致相位分离,对材料性能产生负面影响.
研究的目的:
- 为了研究从单一元素材料中形成一个散装金属玻璃的形成.
- 探索高静态压力和低温度在制造新型无形合金中的潜力.
- 评估元素无形的热稳定性和潜在应用.
主要方法:
- 采用X射线衍射测量来确认无形结构.
- 使用高静态压力和低温来合成金属玻璃.
- 在环境条件下进行无形材料的回收.
主要成果:
- 一个散装金属玻璃成功地从元素中形成.
- 在环境条件下,无形是可回收的.
- 由此产生的无形,与传统的无形合金相比,表现出优越的热稳定性.
结论:
- 基本散装金属玻璃可以在特定的高压,低温条件下形成.
- 无形氧表现出增强的热稳定性,这表明它有可能用于高温应用.
- 这一发现挑战了以前关于BMG形成所需的复杂性的假设.
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