Nitriding and DLC Coating of Aluminum Alloy Using High-Current Pressure-Gradient-Type Plasma Source
At a Glance
Section titled “At a Glance”| Metadata | Details |
|---|---|
| Publication Date | 2020-03-18 |
| Journal | International Journal of Metallurgy and Metal Physics |
| Authors | Akio Nishimoto, FURUYA Eiji, KOUSAKA Kenji |
| Institutions | Kansai University |
| Citations | 3 |
Abstract
Section titled “Abstract”Nitriding of an A5052 aluminum alloy followed by coating with a diamond-like carbon (DLC) film using a pressure-gradient-type plasma source was performed. The plasma source was operated at a low discharge voltage of 60-100 V and a high current of 60-130 A. First, the aluminum alloy was plasma nitrided for 4 h at 520 ℃ under 0.09-1.1 Pa. The DLC film was then coated using acetylene gas with the same apparatus. The Vickers microhardness of the surface nitrided at 0.51 Pa increased to approximately 305 HV from an initial value of 125 HV for the base material. In addition, glow discharge-optical emission spectrometry (GD-OES) revealed that nitrogen was concentrated in the surface region.