Manufacture of thick VPS W coatings on relatively large CuZrCr substrate and its steady high heat load performance

被引：5

作者：

Deng Chunming ^{[1
]}

Liu Min ^{[1
]}

Yang Zhenxiao ^{[1
]}

Deng Changguang ^{[1
]}

Zhou Kesong ^{[1
]}

Kuang Ziqi ^{[1
]}

Zhang Jifu ^{[1
]}

机构：

[1] Guangzhou Res Inst Nonferrous Met, Guangzhou 510651, Guangdong, Peoples R China

来源：

JOURNAL OF NUCLEAR MATERIALS | 2014年 / 455卷 / 1-3期

关键词：

TUNGSTEN COATINGS; GRAPHITE;

D O I：

10.1016/j.jnucmat.2014.05.029

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

W material is considered as one of potential Plasma Facing Materials (PFMs) for its high melting point, excellent stability at elevated temperature, good thermal conductivity, excellent anti-plasma sputtering and low Tritium retention. Functionally graded W/Cu coating was applied on CuCrZr substrate (250 mm x 120 mm x 30 mm) with compositionally gradient W/Cu as bond coat (0.4-0.6 mm) and 1.5 mm thick W coating as top coat via Vacuum Plasma Spraying (VPS) for continuous deposition of 5 h. Microstructure, chemical composition, porosity and adhesive strength for as sprayed thick W coating on the CuCrZr substrate were characterized by means of SEM, ICP-MS, Mercury Intrusion Porosimeter and tensile strength tester. The steady high heat load (HHL) performance for W/Cu functional gradient coating was evaluated by high energy electron beam. The results showed that thick VPS W coated CuCrZr substrate can withstand the steady high heat load at the electron beam power density of 9 MW/m(2) for 1000 cycles. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：145 / 150

页数：6

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