【摘要】 利用等离子体喷涂技术和弥散增强粉末冶金方法制备钨基面对等离子体材料,并对其基本物理属性进行了分析,包括气孔率及其分布、硬度、抗弯强度、结合强度。同时,利用电子束实验装置对钨基复合材料高热负荷性能进行了研究。研究发现,VPS-W涂层能够承受10MW/m²、100s的热负荷沉积,涂层开裂、分层是其失效原因;TiC和La₂O₃弥散相增强了钨基复合材料性能,在表面温度控制在1500℃以下可作为面对等离子体材料。更多还原

【Abstract】 Tungsten plasma facing materials（PFM） were fabricated by means of plasma spraying technology and powder metallurgy, respectively. And the main characteristics including porosity and pore size distribution, Vickers hardness, flexural strength, bonding strength between W coating and the substrate, of the tungsten PFM were tested.. The performance of the PS-W coating under high heat loading was investigated using the electron beam facility with the water cooling. The results indicate that VPS-W coating can withstanding the heat load of 10 MW/m² for 100 s exhibiting the transfer-heat capability better than the APS-W coating. The failure behavior is due to the macro-cracks and delamination. Both of TiC and La₂O₃ particles can effectively improve the heat performance, the suitable PFM at temperature less than 1500℃ for the coating surface.更多还原