THE RELATIONSHIP BETWEEN THE MICROSTRUCTURE AND THERMAL-DIFFUSIVITY OF PLASMA-SPRAYED TUNGSTEN COATINGS

被引：60

作者：

BOIRELAVIGNE, S

MOREAU, C

SAINTJACQUES, RG

机构：

[1] INST NATL RECH SCI ENERGIE & MAT,VARENNES,PQ,CANADA

[2] NATL RES COUNCIL CANADA,INST IND MAT,BOUCHERVILLE,PQ J4B 6Y4,CANADA

来源：

JOURNAL OF THERMAL SPRAY TECHNOLOGY | 1995年 / 4卷 / 03期

关键词：

MICROSTRUCTURE; MODELING; POROSITY CHARACTERIZATION; THERMAL DIFFUSIVITY; TUNGSTEN COATING;

D O I：

10.1007/BF02646969

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Tungsten and tungsten alloy coatings are candidate materials for plasma facing components of divertor plates in future fusion reactors. In normal operation, the sprayed coatings will be submitted to intense heat fluxes and particle bombardment. This work investigated the relationship between the microstructure of plasma-sprayed tungsten coatings and their thermal diffusivity as determined by the laser flash method. The microstructural investigation was carried out on copper-infiltrated coatings. Such a preparation technique permitted the measurement of the total true contact area between the lamellae within the tungsten coatings. The spraying atmosphere was found to strongly influence the interfacial contact between lamellae and coating thermal diffusivity.

引用

页码：261 / 267

页数：7

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