Phase Transformation and Microstructure of Nanostructured Ni/Al2O3 Coating Deposited by Plasma Spraying

被引：0

作者：

Li Changqing ^{[1
]}

Ma Shining ^{[1
]}

Song Wei ^{[1
]}

机构：

[1] Acad Armored Force Engn, Beijing 100072, Peoples R China

来源：

INTERNATIONAL FEDERATION FOR HEAT TREATMENT AND SURFACE ENGINEERING (20TH CONGRESS) | 2013年 / 50卷

关键词：

Nanostructured Coating; Phase Transformation; Microstructure;

D O I：

10.1016/j.phpro.2013.11.044

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Nanostructured Ni/Al2O3 feedstock was prepared by chemical wrapping, spraying dry and gas protected sintering, and nanostructured coatings were deposited subsequently by plasma spraying. XRD, SEM and TEM were used to detect the phase and microstructure of the coatings. The great mass of alpha-Al2O3 was transferred into gamma- Al2O3 during plasma spraying process. The Ni/Al2O3 coatings are composed of irregular fully deformed layers. The grain size of the coatings is about 100nm. There are two states of Ni in the coatings, some of them form uniform thin layer which separate the adjacent Al2O3 phase, and the others form sphericity particle enveloped in Al2O3. (C) 2013 The Authors. Published by Elsevier B.V.

引用

页码：277 / 281

页数：5