Nanocrystalline construction in ultra-high temperature thermal barrier coatings using as-synthesized nanostructured La2(Zr0.75Ce0.25)2O7 feedstocks

被引：5

作者：

Zhou, Feifei ^{[1
,2
,3
]}

Zhang, Xiaofeng ^{[2
,3
]}

Liu, Min ^{[2
,3
]}

Wang, Yaming ^{[1
]}

Wang, You ^{[1
]}

Deng, Chunming ^{[2
,3
]}

机构：

[1] Harbin Inst Technol, Dept Mat Sci, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

[2] Guangdong Inst New Mat, Natl Engn Lab Modern Mat Surface Engn Technol, Guangzhou 510651, Peoples R China

[3] Guangdong Inst New Mat, Key Lab Guangdong Modern Surface Engn Technol, Guangzhou 510651, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2020年 / 46卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Nano-grains construction; Ultra-high temperature thermal barrier coatings; La-2(Zr0.75Ce0.25)(2)O-7; Plasma spraying; BONDING STRENGTH; CONDUCTIVITY;

D O I：

10.1016/j.ceramint.2019.11.093

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：

Nanostructured rare earth zirconates are considered to be the most promising top materials for ultra-high temperature thermal barrier coatings. In this communication, the ultra-high temperature thermal barrier coatings using as-synthesized nanostructured La-2(Zr0.75Ce0.25)(2)O-7 feedstocks were deposited and the study is firstly focused on the nano-grains construction in nanostructured La-2(Zr0.75Ce0.25)(2)O-7 coatings with the aid of scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analysis. Results show that the nanograins in as-sprayed La-2(Zr0.75Ce0.25)(2)O-7 coatings comprise non-molten nanostructured feedstocks and columnar nanocrystalline with [222] preferential orientation in splats.

引用

页码：6965 / 6968

页数：4