Preparation and characterization of a composite ceramic coating containing absorber LaFe12O19 by plasma spraying

被引：4

作者：

Niu, Xiaodong ^{[1
]}

Huang, Pai ^{[1
]}

Wang, Ying ^{[1
]}

Zou, Binglin ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resources Utilizat, Changchun 130022, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2023年 / 49卷 / 16期

关键词：

Ceramic coating; LaFe12O19; Heat-resistant; Electromagnetic absorption; Atmospheric plasma spraying; THERMAL-CONDUCTIVITY; MICROWAVE-ABSORPTION; LNMGAL(11)O(19) LN; OXIDATION BEHAVIOR; TEMPERATURE; MAGNETOPLUMBITE; GD; ND; LA; SM;

D O I：

10.1016/j.ceramint.2023.05.252

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：

A ceramic coating with both heat-resistant and electromagnetic (EM) wave absorption performances is prepared by the atmospheric plasma spraying (APS) method. The spraying powder is a composite material mainly containing LaFeO3 and La(Mg/Fe)Al11O19 without EM absorption ability. During APS procedure, a new phase of LaFe12O19 is fabricated by the chemical reaction between Fe2O3 and LaFeO3 at extremely high temperatures. The ceramic coating exhibits larger saturation magnetization (M-s) and higher EM absorption performance than that of the unsprayed sample. The coating Ms is 31 emu/g, and the optimal reflection loss is -39.30 dB at 3.5-5.2 GHz with 4.5 mm thickness. The ceramic coating with both heat-resistant and EM absorption properties is a potential application prospect material in the military industry.

引用

页码：27079 / 27085

页数：7

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