论文部分内容阅读
在Al-12Si中添加合金元素Ce和Al_2O_3复合增强颗粒,采用机械振动辅助浇注制备出了Al-12Si-0.5Ce-5%Al2O3新型Al-Si系建筑储能材料。研究了该材料的物相组成、显微组织、高温力学性能、高温抗氧化性能和储热性能。结果表明,与Al-1_2Si相比,合金元素Ce和Al_2O_3复合增强颗粒的添加可使其300℃抗拉强度增加40%,500℃抗拉强度增加103%,600℃高温氧化100h后的单位面积质量增重减小89%,初始熔化温度升高1.7℃。
The Al-12Si-0.5Ce-5% Al2O3 new Al-Si building energy storage materials were prepared by adding alloying elements Ce and Al 2 O 3 composite reinforcing particles into Al-12Si by mechanical vibration assisted casting. The material phase composition, microstructure, high temperature mechanical properties, high temperature oxidation resistance and heat storage performance were studied. The results show that the addition of Ce and Al 2 O 3 reinforced particles can increase the tensile strength at 300 ℃ by 40%, increase the tensile strength at 500 ℃ by 103%, and increase the unit area after high temperature oxidation at 600 ℃ for 100h The weight gain decreased by 89% and the initial melting temperature increased by 1.7 ° C.