Al-Si系建筑储能材料的合金化及复合增强研究

Research on Alloying and Compound Enhancement of Al-Si Series Construction Energy Storage Material

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℃。

Adding alloy elements Ce and A1203 compound reinforced particles into A1-12Si material, At-12Si-0.5Ce-5% A1203 new-type Al-Si series construction energy storage materials was prepared by using mechanical vibration assisted pouring method. The phase composition, microstructure, high temperature mechanical properties, high temperature oxidation resistance and thermal storage properties of the material were studied. The results show that compared with AI-12Si alloy, adding alloying elements Ce and AI：O3 compound reinforced particles can make the tensile strength of Al-12Si alloy at 300℃ increase by 40%, make the tensile strength at 500℃ increase by 103%, make the weight gain unit area mass after 100h high temperature oxidation at 600℃ reduce by 89%, make initial melting temperature increase by 1.7℃.