Structural characterization of YSZ/Al2O3 nanostructured composite coating fabricated by electrophoretic deposition and reaction bonding

被引：22

作者：

Ahmadi, Mojtaba ^{[1
]}

Aghajani, Hossein ^{[1
]}

机构：

[1] Univ Tabriz, Mat Engn Dept, Tabriz, Iran

来源：

CERAMICS INTERNATIONAL | 2018年 / 44卷 / 06期

关键词：

YSZ/Al2O3; Composite coating; Electrophoretic deposition; Oxidation; Reaction bonding; THERMAL BARRIER COATINGS; THIN-FILMS; EPD; CONDUCTIVITY; TEMPERATURE; COMBINATION; ENGINES; SLIPS;

D O I：

10.1016/j.ceramint.2017.12.185

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Suspension of YSZ and Al particles in acetone in presence of 1.2 g/1 iodine as dispersant was used for electrophoretic deposition of green form YSZ/Al coating. Results revealed that applied voltage of 6 V and deposition time of 3 min were appropriate for deposition of green composite form coating. After deposition, a nanostructured dense YSZ/Al2O3 composite coating was fabricated by oxidation of Al particles at 600 degrees C for 2 h and subsequently sintering heat treatment at 1000 degrees C for 2 h. Melting and oxidation of Al particles in the green form composite coating not only caused reaction bonding between the particles but also lowered the sintering temperature of the ceramic coating about 200 degrees C. The EDS maps confirmed that the composition of fabricated coating was uniform and Al2O3 particles were dispersed homogenously in YSZ matrix.

引用

页码：5988 / 5995

页数：8

共 25 条

[1] Suspension characterization and electrophoretic deposition of Yttria-stabilized Zirconia nanoparticles on an iron-nickel based superalloy [J].