Effects of TiO<sub>2</sub> Content on Quality of the Ceramic Coating Prepared by SHS Synthesis

Hu Shan; Yang Xi; Yang Yongshun; Dong Zhixiang

doi:10.15980/j.tzzz.2016.07.021

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Effects of TiO₂ Content on Quality of the Ceramic Coating Prepared by SHS Synthesis
Vol. 36, Issue 7, Pages: 740-743(2016)
Published： 2016 ，
DOI： 10.15980/j.tzzz.2016.07.021

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[1]胡珊,杨茜,杨永顺,董志翔.TiO_2对SHS重力分离法合成陶瓷涂层质量的影响[J].特种铸造及有色合金,2016,36(07):740-743.

Hu Shan, Yang Xi, Yang Yongshun, et al. Effects of TiO₂ Content on Quality of the Ceramic Coating Prepared by SHS Synthesis. [J]. Special Casting & Nonferrous Alloys 36(7):740-743(2016)
[1]胡珊,杨茜,杨永顺,董志翔.TiO_2对SHS重力分离法合成陶瓷涂层质量的影响[J].特种铸造及有色合金,2016,36(07):740-743. DOI： 10.15980/j.tzzz.2016.07.021.

Hu Shan, Yang Xi, Yang Yongshun, et al. Effects of TiO₂ Content on Quality of the Ceramic Coating Prepared by SHS Synthesis. [J]. Special Casting & Nonferrous Alloys 36(7):740-743(2016) DOI： 10.15980/j.tzzz.2016.07.021.

摘要

研究了在SHS重力分离法制备陶瓷涂层的过程中

TiO

的添加量对涂层质量的影响。结果表明

陶瓷层中除Al

、FeAl

、Al

等杂相外

还存在FeTiO

、Ti

等相;要获得完整且厚度均匀的涂层

反应体系中的TiO

的添加量需控制在10%以下;随着反应体系中TiO

添加量的增加

反应速度变慢

冷却后获得的陶瓷涂层的厚度增加

显气孔率下降

致密度提高;随着TiO

添加量的增加

涂层与基体的结合强度逐渐提高

在8%时达到最大值

而后明显降低。

Abstract

Effects of TiO

content on coating quality were investigated in process of preparing ceramic coating by SHS gravity separation.The results show that the ceramic layer is composed of Al

FeAl

FeTiO

and Ti

.To obtain a complete and uniform thickness of coating

the amount of TiO

in the reaction system should be controlled less than 10%.With the increase of TiO

content in the reaction system

the reaction rate becomes slow

and the thickness of the ceramic coating is increased

meanwhile

the apparent porosity is decreased

and the volume density is increased.With the increase of the amount of TiO