Surface roughness and microstructure of yttria stabilized zirconia EB-PVD coatings

被引：9

作者：

Jang, BK ^{[1
]}

Matsubara, H ^{[1
]}

机构：

[1] JFCC, Mat Res & Dev Lab, Atsuta Ku, Nagoya, Aichi 4568587, Japan

来源：

SURFACE & COATINGS TECHNOLOGY | 2006年 / 200卷 / 14-15期

关键词：

electron beam-physical vapor deposition; zirconia; microstructure; surface roughness; nanopore;

D O I：

10.1016/j.surfcoat.2005.04.004

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Microstructural properties and surface roughness of ZrO2-4 mol% Y2O3 coating layers fabricated by EB-PVD were investigated as a function of substrate rotation speed during deposition. The coatings were applied to zirconia substrates of the same composition as the coating material. Coating layers consist of porous, aligned columnar grains with a feather-like structure. Specimens deposited at I rpm form a wavy columnar structure. The average width of columns in the coating layers increased with increasing substrate rotation speed, with columns capped with a cone- or pyramid-like shape at the surface. The surface roughness as well as porosity of the coating layers also increased with increasing substrate rotation speed. High concentrations of nanopores are found both inside the cores of the columns and within the feather-like features of the columns. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：4594 / 4600

页数：7

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