About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
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Processing and Performance of Materials Using Microwaves, Electric and Magnetic Fields, Ultrasound, Lasers, and Mechanical Work – Rustum Roy Symposium
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| Presentation Title |
Corrosion protection of powder metal parts by cold spray coating of AlCrCoFeNi high entropy alloy |
| Author(s) |
Ezeck J Olinger, Daudi R. Waryoba, Dylan Treaster |
| On-Site Speaker (Planned) |
Daudi R. Waryoba |
| Abstract Scope |
Cold spray coating is a process that is applicable to corrosion resistance, dimensional restoration and wear resistance coatings. The unique ability to provide a corrosive resistant coating with convenience and environmental friendliness is the main attraction to cold spray coatings. In this study, a high entropy alloy with an equimolar composition of AlCoCrFeNi was cold sprayed on F-0008 powder metal part for surface modification and corrosion protection. The cold spray coating was performed at 600 °C in the air as well as in nitrogen atmosphere. To improve the surface coating, cold sprayed specimens were heat treated at 950 °C in argon atmosphere for 2 hrs. Corrosion testing was performed on as-sintered, cold-sprayed, and heat-treated specimens by exposing the specimens with salt-spray until corrosion state reaches ~ 50%, determined visually. Detailed characterization of the coating thickness, corrosion behavior, surface roughness, and microhardness of the specimens are reported in this paper. |