零膨胀材料在光学器件、精密仪器、航空航天、半导体等领域具有重要应用价值。本课题旨在探索具有宽温域、各向同性、良好加工性能的新型零/负膨胀功能材料。首先，对已有的金属基零/负膨胀材料进行筛选和优化，获得更宽温区、热膨胀系数可调控的各向同性零/负膨胀金属基功能材料。然后选择合适材料与Al、Ti、Cu等金属或合金复合，期望实现对金属/合金材料热膨胀行为的调控，并保持良好的力学与加工性能，最终获得具有实际应用价值的宽温域零膨胀材料或热膨胀系数可调控的金属功能材料。同时兼顾零/负膨胀材料导电、导热、力学、以及可能的磁致伸缩、压磁、压热、压阻等性能的研究，探索具有其它特殊功能的零膨胀材料。 理论上，揭示结构（晶体结构、电子结构、磁结构以及界面）与物性的本质关联关系，以及复合材料力学性能、界面匹配、相稳定等问题，掌握材料热膨胀性质的关键影响因素、以及调控规律与本质，探索具有实际应用价值的新型智能材料

Zero thermal expansion materials have important applications in optical devices, precision instruments, aerospace, semiconductor, and so on. This study aims to explore new zero/negative thermal expansion materials with wide temperature range, isotropy and good processability. Firstly, we will screen and optimize the existing zero/negative expansion materials in order to obtain isotropic zero/negative expansion metal-based functional materials with controllable thermal expansion coefficients and wider temperature region can be obtained. Then the obtained excellent materials will be selected to combine with Al, Ti, Cu and other metals or alloys. It was expected to realize the control of thermal expansion behavior for metal / alloy materials while they still have good mechanical and processing performance, Accordingly, zero expansion materials with wide response temperature region and metal functional materials with controllable thermal expansion coefficient, which have practical application value, will be finally obtained, Meanwhile, electric/thermal conductivity, mechanical properties, as well as possible magnetostriction, piezomagnetic, barocaloric, baroresistance properties for these zero/negative thermal expansion materials will also be investigated in order to explore zero thermal expansion materials with other abnormal properties, In theory, this study focus on the essential correlation between the structure (crystal structure, electronic structure, magnetic structure and interface) and physical properties, the mechanical properties/ interface matching/ phase stability of the composites, the key influencing factors/controlling/mechanism of the thermal expansion properties, and then exploring new intelligent materials with practical application value.