Research Progress on Aluminized Coatings for High Temperature Blades

QI Haoxiong, MA Rui, MENG Guohui, LIU Meijun, YANG Guanjun

doi:10.16577/j.issn.1001-1560.2022.0291

Materials Protection >

2022 , Vol. 55 >Issue 10: 147 - 161

DOI: https://doi.org/10.16577/j.issn.1001-1560.2022.0291

Research Progress on Aluminized Coatings for High Temperature Blades

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(State Key Laboratory for Mechanical Behavior of Materials,Xi'an Jiaotong University,Xi’an 710049,China)

Received date: 2022-04-23

Revised date: 2022-05-10

Accepted date: 2022-06-15

Online published: 2023-12-23

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Abstract

High temperature blades are the core components of aero engines and gas turbines.However,the oxidation and corrosion damage of high temperature blades during service are key issues that affacting their reliable service.By preparing aluminized coatings on the surfaces of the blades,the oxidation resistance and corrosion resistance of the blades can be significantly improved.In this paper,the issues relating to the preparation,service and performance improvement of aluminized coatings were summarized.Firstly,the current main preparation technologies of aluminized coatings and the formation mechanisms of the coatings were introduced.Secondly,the high temperature oxidation and corrosion mechanisms of the aluminized coatings were elaborated.Subsequently,the current element modification treatments and the effects of the modification chemical elements used to improve the oxidation resistance and corrosion resistance of the aluminized coatings were summarized.Finally,the development trend of aluminized coatings in the future was prospected.Besides,the technology of preparing large-grain oxide film by pretreatment proposed in this paper would provide a reference for the development of high-performance aluminized coatings in the future.

Key words： high temperature blade; aluminized coating; oxidation; corrosion

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QI Haoxiong, MA Rui, MENG Guohui, LIU Meijun, YANG Guanjun . Research Progress on Aluminized Coatings for High Temperature Blades[J]. Materials Protection, 2022 , 55(10) : 147 -161 . DOI: 10.16577/j.issn.1001-1560.2022.0291

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