摘要
介绍了等离子体喷涂钨涂层和粉末冶金钨氧化镧合金面对等离子体材料的制备,并对其进行了性能分析,主要包括微观结构、杂质含量、气孔大小及气孔率分布、结合强度、热导率以及热负荷疲劳性能和承受能力。结果表明:真空等离子体喷涂钨涂层性能比大气喷涂钨涂层性能优越,是更为合适的钨涂层制备技术。真空喷涂钨涂层具有较低的气孔率、较高的热导率、较低的杂质含量和较优异的热负荷性能,能够承受10 MW/m^(2)、100周次疲劳测试。氧化镧弥散掺杂相具有钉扎作用,能够抑制钨烧结过程中的长大,有效提高钨材料强度,改善热负荷性能,W-1%La_(2)O_(3)(质量分数)材料能够承受6MW/m^(2)的热负荷。
Fabricating technology of tungsten plasma facing material(W-PFM) was introduced, such as plasma spraying technology and powder metallurgy with dispersed Lanthanum oxide(La_(2)O_(3)). And it was studied that the microstructure and the main performances of tungsten materials as PFM. The results indicate that VPS-W coating has the better properties compared to APS-W coating: the lower porosity, the better thermal conductivity, the lower impurity content and the better heat flux performance. It can withstand 100 fatigue cycles under the heat flux of 10 MW/m^(2) and is more appropriate for plasma facing material. La_(2)O_(3)particles can hold back W particle growing and enhance the strength of tungsten, which are helpful to improve thermal performance of W PFM. And W-1wt%La_(2)O_(3)as PFM is suitable under the heat flux of no more 6 MW/m^(2).
作者
种法力
陈俊凌
郑学斌
Chong Fali;Chen Junling;Zheng Xuebin(Xuzhou University of Technology,Xuzhou 221000,China;Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,China;Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China)
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2023年第2期645-650,共6页
Rare Metal Materials and Engineering
基金
国家自然科学基金(11875230)。
关键词
钨
氧化镧
面对等离子体材料
tungsten
lanthanum oxide
plasma facing material
