Tungsten Coating on Low Activation Vanadium Alloy by Plasma Spray Process
Tungsten Coating on Low Activation Vanadium Alloy by Plasma Spray Process
复制标题
等离子喷涂低活化钒合金钨涂层
DOI：
10.13182/fst05-a797
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发表时间：
2005
影响因子：
0.9
通讯作者：
H. Kurishita
中科院分区：
文献类型：
--
作者：
T. Nagasaka;T. Muroga;N. Noda;M. Kawamura;H. Ise;H. Kurishita
采用等离子喷涂工艺在聚变候选材料V-4Cr-4 Ti（NIFS-HEAT-2）基体上制备了钨涂层，并将其应用于聚变包层面向等离子体表面的防护。提高等离子体输入功率和基体温度可有效降低涂层孔隙率，但会导致基体硬化和77 K冲击性能下降。硬化似乎是由于气体杂质的污染和涂层过程中热应力引起的变形。由于所有样品在室温下均显示出良好的延展性，因此进一步加热似乎对钒基材是可接受的。根据弯曲试验估计，W涂层的断裂应力至少为313 MPa，这远远超过了熔合包层中钒结构的设计应力。
Abstract Tungsten (W) coating on fusion candidate V-4Cr-4Ti (NIFS-HEAT-2) substrate was demonstrated with plasma spray process for the purpose of applying to protection of the plasma facing surface of a fusion blanket. Increase in plasma input power and temperature of the substrate was effective to reduce porosity of the coating, but resulted in hardening of the substrate and degradation of impact property at 77 K. The hardening seemed to be due to contamination with gaseous impurities and deformation by thermal stress during the coating process. Since all the samples showed good ductility at room temperature, further heating seems to be acceptable for the vanadium substrate. The fracture stress of the W coating was estimated from bending tests as at least 313 MPa, which well exceeds the design stress for the vanadium structure in fusion blanket.
影响因子：
3.1
作者：
Muroga, T;Nagasaka, T;Zinkle, SJ
通讯作者：
Zinkle, SJ