典型非晶—金属玻璃形成体系的热物性研究

Amorphous matter is not only a large class of condensed matter, but also an important part of contemporary material physics, and has important theoretical research value and a wide range of applications. In order to clarify the physical essence of amorphous matter, the project intends to study systematically thermal properties of typical amorphous system, metallic glass forming system. Experimental measurement and numerical analysis are used to obtain the evolution law and basic behavior characteristics of the specific heat, entropy and enthalpy of the glass forming system; molecular dynamics simulation will give in details the characteristics of the thermal properties of glass, supercooled liquid and normal liquid, and the intrinsic connections between the thermal properties and structure, interaction and the elemental unit movement. Combining experiment with theory, we further clarify the intrinsic mechanism of thermal properties, and realize the theoretical modeling of the typical glass forming system, then establish the correlation between dynamics and thermodynamics. The implementation of this project will help further understand the glass transition and the nature of glass, which are long-standing issues in science, and provide strong support in theory for the development and application of amorphous materials.

非晶物质是一大类凝聚态物质，也是当代材料物理的一个重要组成部分，有着重要的理论研究价值和广泛且巨大的应用领域。为明晰非晶的物理本质，本项目拟以典型非晶体系—金属玻璃形成体系的热性能为研究对象。通过系统试验测试和分析，获取系统性金属玻璃形成体系的比热、熵和焓随温度的演化规律和基本行为特征；分子动力学理论模拟方法，详细解析玻璃、深过冷液体和正常液体的热性能，并建立其与结构、相互作用以及组成单元基本运动之间的内在关联；实验和理论相结合，深入阐明该类物质的热性能内在机理，实现玻璃形成体系的理论模型化，进而建立玻璃形成体系中动力学和热力学的关联。本项目的实施可深入理解长期困扰非晶物理的关键问题—玻璃和玻璃转变本质，为新型非晶材料研发和应用提供理论支持。

为明晰当代材料物理的一个重要组成部分非晶的物理本质，本项目系统研究了典型非晶体系金属玻璃形成体系的热性能，获取了金属玻璃形成体系的比热、熵和焓随温度的演化规律和基本行为特征；解析玻璃、深过冷液体和正常液体的热性能；建立热性能与结构、相互作用以及组成单元基本运动之间的内在关联；本项目的实施深入理解了长期困扰非晶物理的关键问题—玻璃和玻璃转变本质，为新型非晶材料研发和应用提供理论支持。