Fabrication and characterization of W-Cu functionally graded material by spark plasma sintering process

被引：26

作者：

Chaubey, A. K. ^{[1
]}

Gupta, Rajat ^{[1
]}

Kumar, Rohit ^{[1
]}

Verma, Bharat ^{[1
]}

Kanpara, Shailesh ^{[2
]}

Bothula, Sivaiah ^{[3
]}

Khirwadkar, S. S. ^{[2
]}

Dhar, Ajay ^{[2
]}

机构：

[1] IMMT, CSIR, Bhubaneswar 751013, Orissa, India

[2] Inst Plasma Res, Gandhinagar 382428, India

[3] NPL, CSIR, Dr KS Krishnan Marg, New Delhi 110012, India

来源：

FUSION ENGINEERING AND DESIGN | 2018年 / 135卷

关键词：

Functionally graded material; Mechanical properties; Spark plasma sintering; Structure; Plasma facing components; COOLED DIVERTOR; TEMPERATURE;

D O I：

10.1016/j.fusengdes.2018.07.010

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

In this study, seven-layered W/Cu functionally graded material (FGM) (100 W, 80W-20Cu, 60W-40Cu, 50W-50Cu, 40W-60Cu, 20W-80Cu, 100Cu, by wt %) were fabricated by a spark plasma sintering process (SPS). The influences of sintering temperature on microstructure, physical and mechanical properties of the sintered bulk FGM were investigated. Results indicated that the graded structure of the composite densified after the SPS process and interfaces of the layers are clearly visible. All of the layers had a very high relative density, thereby indicating their densification and excellent sintering behavior. SEM and EDX study of the bulk sample crosssection reveal that the graded structure can be retained up to sintering temperature of 1050 degrees C. In addition fine microstructure within each layer with good interface bonding was also observed. Sample sintered at 1050 degrees C exhibited excellent mechanical and physical properties (hardness 239 +/- 5 Hv and relative density of 90.5%). The result demonstrates that SPS is a promising and more suitable process for fabrication of W-Cu functionally graded materials.

引用

页码：24 / 30

页数：7

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