Natural aging of metallic glasses
Source abstract
Abstract
金属玻璃本质上是亚稳态的, 在高温下倾向于通过弛豫和晶化 达到低能状态. 然而在室温下, 通常认为其无定形结构可以保持足够长 的时间. 本文报道了在自然环境中保存12年的一系列CuZr金属玻璃的 长期稳定性. 结果表明, 低Zr含量的CuZr金属玻璃(低于66.7 at%)由于 室温氧化引起了严重的失稳; 高Zr含量的CuZr金属玻璃形成了一层致 密的ZrO2而保留了光泽的表面, 尽管如此, 其热性能(如玻璃转变温度 Tg和晶化温度Tx)由于氧的渗透发生了明显改变. 本文的研究结果不仅 为理解金属玻璃的热稳定性提供了重要的见解, 而且对无序固体的工 程应用具有重要意义.
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OpenAlex topics: Metallic Glasses and Amorphous Alloys · Material Dynamics and Properties · Glass properties and applications
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