Given SiC materials’ high specific strength and ability to retain this strength at high temperatures, they are of particular interest for propulsion and energy production applications. SiC has been studied extensively for nuclear energy applications, particularly in high-temperature gas reactor systems. While high-temperature gas reactors use helium as a coolant, in accident scenarios significant amounts of air or water vapor can be introduced into the coolant and reactor core. It is important to understand the oxidation behavior and mechanisms of TRISO particles (especially the SiC coating layer) under these conditions. In this seminar, oxidation studies on SiC in air or water vapor will be introduced. Over the past decade, in part due to the success in developing nuclear-grade SiC/SiC and an interest in enhanced accident tolerance, SiC has been increasingly suggested for use in light water reactor systems. The SiC and its composites used for nuclear applications are traditionally produced by chemical vapor deposition/infiltration. However, the efficiency is low and it is difficult to produce components with complex shapes. In contrast, additive manufacturing may be a good method to produce complexly shaped SiC and composite components with higher efficiency. In this talk, additive manufacturing of SiC and its composites will also be discussed.

　　温海明，美国密苏里科技大学材料科学与工程系长聘教授，博士生导师，已培养博士生12名。主持数项美国能源部重大项目以及国家科学基金项目，累计项目经费近1000万美元。为美国能源部及国家科学基金评审专家。于2022和2023年分别获得密苏里科技大学杰出教学奖以及杰出科研奖。在核材料及航空材料等结构材料领域（包括金属，陶瓷及复合材料）取得一系列重要成果。已在国际核心期刊（包括Science Advances, Acta Materialia, Journal of American Ceramic Society, Journal of European Ceramic Society等）发表论文近90篇，引用次数超过4500次。本科毕业于四川大学。硕士毕业于中国科学院上海硅酸盐研究所，师从中国工程院院士董绍明教授。2012年博士毕业于美国加利福尼亚大学戴维斯分校，师从美国工程院院士Enrique Lavernia教授。博士毕业后在美国西北大学从事博士后研究两年，与美国工程院院士David Seidman教授合作。