High Temperature Corrosion Behavior of CHS - 104 Alloy in a Simulated Waste Incinerator Environment

WU Duo - li, DONG Tian - le, ZHENG Jia - yin, SHU Cong, ZHANG Chao

doi:10.16577/j.issn.1001-1560.2022.0182

Materials Protection >

2022 , Vol. 55 >Issue 7: 37 - 42

DOI: https://doi.org/10.16577/j.issn.1001-1560.2022.0182

High Temperature Corrosion Behavior of CHS - 104 Alloy in a Simulated Waste Incinerator Environment

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College of Mechanical Engineering, Yangzhou University, Yangzhou 225127, China

Received date: 2022-03-17

Revised date: 2022-04-04

Accepted date: 2022-04-29

Online published: 2023-12-15

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Abstract

With the aim of studying the high temperature fireside corrosion of the incinerator, CHS - 104 alloy samples covered with NaCl salt were tested in the aspect of high temperature corrosion in a laboratory simulated waste incinerator atmosphere (80%N2+5%O2+15%H2O) at 450 °C, 550 °C and 650 °C. Subsequently, the experimental samples were analyzed by means of scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X - ray diffractometer (XRD). Results showed that: a thin protective oxide film formed on the surface of the alloy at 450 ℃, resulting in an excellent corrosion resistance; a continuously growing multi - layered oxide film formed on the surface of the alloy at 550 ℃, resulting in a good corrosion resistance; and Cl ions penetrated the oxide film on the surface of the alloy at 650 °C, causing an obvious corrosion damage to the surface oxide film with Ni - and Co - based oxides as the main corrosion produces, and thus leading to a poor corrosion resistance.

Key words： CHS - 104 alloy; NaCl; waste incineration; high temperature fireside corrosion

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WU Duo - li, DONG Tian - le, ZHENG Jia - yin, SHU Cong, ZHANG Chao . High Temperature Corrosion Behavior of CHS - 104 Alloy in a Simulated Waste Incinerator Environment[J]. Materials Protection, 2022 , 55(7) : 37 -42 . DOI: 10.16577/j.issn.1001-1560.2022.0182

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