Performance of Plasma Sprayed Al2O3·TiO2&nbsp;Coatings and Its Application in Labyrinth Seal of Aeroengine

ZHANG Mou-rui, CHANG Qiu-mei, LI Chang-yin, LIANG Ying, YANG Lin

doi:10.16577/j.issn.1001-1560.2022.0112

Materials Protection >

2022 , Vol. 55 >Issue 4: 182 - 185

DOI: https://doi.org/10.16577/j.issn.1001-1560.2022.0112

Performance of Plasma Sprayed Al2O3·TiO2 Coatings and Its Application in Labyrinth Seal of Aeroengine

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1. AECC Shenyang Liming Aero-Engine Co., Ltd., Shenyang 110043, China;2. School of Aero-Engine, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

Received date: 2021-10-17

Revised date: 2021-11-23

Accepted date: 2021-12-14

Online published: 2023-12-28

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Abstract

At present, there are few reports on the properties of Al2O3·TiO2 coating and its application in solid parts. NiAl self-adhesive bottom layer and Al2O3·TiO2 ceramic surface layer were prepared on GH4169 test piece by using plasma spraying equipment. Then, the microstructure, microhardness, bonding strength and bending properties were tested. Based on the test results, the spray verification was carried out with a certain type of aeroengine solid parts. Results showed that the comprehensive performance of the Al2O3·TiO2 ceramic coating was good, When Al2O3·TiO2 ceramic coating was used in labyrinth sealing parts, it could effectively protect the labyrinth, preventing labyrinth from wear, and could improve the service performance of the parts and prolong its service life.

Key words： plasma spraying; Al₂O₃·TiO₂coating; aeroengine; labyrinth seal; coating performance

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ZHANG Mou-rui, CHANG Qiu-mei, LI Chang-yin, LIANG Ying, YANG Lin . Performance of Plasma Sprayed Al2O3·TiO2 Coatings and Its Application in Labyrinth Seal of Aeroengine[J]. Materials Protection, 2022 , 55(4) : 182 -185 . DOI: 10.16577/j.issn.1001-1560.2022.0112

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