MEASUREMENT OF THERMAL-DIFFUSIVITY AND ANISOTROPY OF PLASMA-SPRAYED COATINGS

被引:16
作者
HOULBERT, AS
CIELO, P
MOREAU, C
LAMONTAGUE, M
机构
[1] National Research Council of Canada, Industrial Materials Institute, Boucherville, J4B 6Y4, Québec
关键词
COATINGS; PLASMA-SPRAY; THERMAL ANISOTROPY; THERMAL DIFFUSIVITY; TUNGSTEN; ZIRCONIA;
D O I
10.1007/BF01563712
中图分类号
O414.1 [热力学];
学科分类号
摘要
The thermal diffusivity of free-standing tungsten and zirconia plasma-sprayed coatings was measured in the directions parallel and perpendicular to their surface. The parallel thermal diffusivity was evaluated by a double-sensing Laplace-transform technique and compared to the perpendicular values obtained by the flash technique. Ratios between the parallel and the perpendicular thermal diffusivity values were in the range of 1.1 to l.5 for zirconia and 4 to 6 for tungsten. The results are discussed in terms of the coating thickness and microstructure.
引用
收藏
页码:525 / 546
页数:22
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