Investigating Tribological Characteristics of HVOF Sprayed AISI 316 Stainless Steel Coating by Pulsed Plasma Nitriding

9th International Conference on Tribology

Mindivan, H.^1

Bilecik Seyh Edebali University, Department of Mechanical Engineering, Bilecik

11210, Turkey^1

关键词: AISI 316 stainless steel;    Coefficient of frictions;    Duplex surface treatment;    High velocity oxygen fuel thermal sprays;    HVOF process;    Pulsed plasma nitriding;    Stainless steel coating;    Tribological characteristics;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/295/1/012033/pdf
DOI  :  10.1088/1757-899X/295/1/012033

来源: IOP

【 摘 要 】

In this study, surface modification of aluminum alloy using High-Velocity Oxygen Fuel (HVOF) thermal spray and pulsed plasma nitriding processes was investigated. AISI 316 stainless steel coating on 1050 aluminum alloy substrate by HVOF process was pulsed plasma nitrided at 793 K under 0.00025 MPa pressure for 43200 s in a gas mixture of 75 % N2and 25 % H2. The results showed that the pulse plasma nitriding process produced a surface layer with CrN, iron nitrides (Fe3N, Fe4N) and expanded austenite (γN). The pulsed plasma nitrided HVOF-sprayed coating showed higher surface hardness, lower wear rate and coefficient of friction than the untreated HVOF-sprayed one.