【摘要】 液态金属锂铅包层是目前国际上聚变堆包层设计研究的主流方案之一,但其仍面临高氚渗透率、液态锂铅对包层结构材料的腐蚀以及锂铅流动引起的磁流体动力学MHD效应等问题,而包层结构材料表面加覆涂层是解决上述问题的关键技术之一。本实验尝试利用大气等离子体喷涂(APS)工艺在中国低活化马氏体CLAM钢上制备多功能氧化铝涂层,试验结果表明:涂层与基底具有较好的结合强度,平均值为31.7 MPa;涂层电阻率为5.26×109~1.54×1010Ω.m;并呈现较高的显微硬度和致密度。本工作可为未来聚变堆液态锂铅包层涂层制备提供理论依据和技术储备。更多还原

【Abstract】 Liquid lithium-lead blanket is one of the leading fusion reactor blanket designs in the world.However,it is subject to some bottleneck issues,such as high tritium permeability,corrosion to structural material by liquid LiPb and MHD(Magnetohydrodynamics)effects caused by flowing LiPb,etc..Coatings on the surface of blanket structural materials is one of the key technologies to solve the above problems.This study is aimed at preparing multifunctional Al2O3 coatings on the China Low Activation Martensitic(CLAM) steel with air plasma spraying(APS) process.The results of the experiment show that the mean adhesion strength of coating is 31.7 MPa,the resistance of Al2O3 coating is 5.26×109～1.54×1010 Ω·m,and the coating presents high microhardness and density.This work can provide theoretical and techological reserve for the preparation of liquid-LiPb-blanket coatings in fusion reactors in the future.更多还原