High Temperature Corrosion Resistance of High Velocity Oxy-Fuel Sprayed Ni-Based Composite Coating

Luo Jing-chuan, Yang Guan-jun, Chen Lin

doi:10.16577/j.issn.1001-1560.2022.0181

Materials Protection >

2022 , Vol. 55 >Issue 7: 31 - 36

DOI: https://doi.org/10.16577/j.issn.1001-1560.2022.0181

High Temperature Corrosion Resistance of High Velocity Oxy-Fuel Sprayed Ni-Based Composite Coating

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State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China

Received date: 2022-03-08

Revised date: 2022-03-30

Accepted date: 2022-04-18

Online published: 2023-12-15

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Abstract

Waste incinerator components suffer sever high temperature corrosion damage in working condition due to the corrosion of the waste and the corrosion of incineration products. In order to alleviate the high temperature corrosion of the incinerator, Cr3C2 - NiCr coatings were deposited via high velocity oxy - fuel spraying method, and the high temperature corrosion resistance of the coatings was studied. The prepared coatings were tested under high temperature oxidation, molten salt corrosion and atmosphere corrosion environments, and both the corrosion behavior and corresponding products of the above-mentioned cermet coatings were evaluated. The corrosion test results showed that under the high temperature oxidation and molten salt corrosion conditions, with the increase of corrosion temperature from 450 ℃ to 650 ℃, the corrosion rates of the coatings increased. Under the atmosphere corrosion condition, the corrosion rates of the coatings increased with the rising of corrosion temperature from 550 ℃ to 650 ℃.

Key words： high velocity oxy - fuel spraying; cermet coating; high temperature corrosion

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Luo Jing-chuan, Yang Guan-jun, Chen Lin . High Temperature Corrosion Resistance of High Velocity Oxy-Fuel Sprayed Ni-Based Composite Coating[J]. Materials Protection, 2022 , 55(7) : 31 -36 . DOI: 10.16577/j.issn.1001-1560.2022.0181

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