Copper-ceramic-composites with interpenetrating phase structure

该项目涉及在电力电子和聚变反应堆领域长期用作高性能热导体的新型金属/陶瓷复合材料。该项目的目的是探索具有高导热性的互穿铜/陶瓷复合材料。采用先进的测试方法来表征这些材料的热循环降解。在第一阶段，该项目将专注于铜/氧化铝复合材料，其中少量已在艾伦应用科学大学成功生产。随着加工设备的改进，这些复合材料将以更大的规模和可复制的质量生产。在KIT建立的测试方法将应用于尺寸范围为5- 50mm的样品在热循环载荷下的降解表征。重点将放在力学和热物理性质之间的相互作用上。同时，将生产互穿铜/碳化硅复合材料。由于碳化硅的性能更好，这些复合材料可能表现出更高的导热性。这些有吸引力的材料也将被描述为它们的工艺-微观结构-性能之间的相互关系。

The project deals with novel metal/ceramic composites for long-term use as high-performance thermal conductors in the fields of power electronics and fusion reactors. The aim of the project is the exploration of interpenetrating copper/ceramic composites exhibiting high thermal conductivities. Advanced testing methods are applied to characterize the thermocyclic degradation of these materials. In the first stage, the project will be focused on copper/alumina composites, small amounts of which have been produced successfully at Aalen University of Applied Sciences. With improved processing equipment these composites will be produced at a larger scale and reproducible quality. Testing methods established at KIT will be applied for the characterization of the degradation under thermocyclic loading on samples in the size range 5-50 mm. The focus will be on the interaction between mechanical and thermophysical properties. In parallel, interpenetrating copper/silicon carbide composites will be produced. These composites may exhibit even higher thermal conductivities due to the better performance of silicon carbide. These attractive materials will be characterized as well with respect to their process-microstructure-properties interrelationship.