A novel plasma oxynitriding by using plain air for AISI 1045 steel

Deposition of DLC Films onto Oxynitriding-Treated V4E High Vanadium Tool Steel through DC-Pulsed PECVD Process

“…It was reported that nitriding and oxynitriding processes are the widely used surface modi cation techniques. 5) Nitriding is a thermochemical process that is typically used to diffuse nitrogen into ferrous materials. This treatment can improve the surface hardness, fatigue strength, wear and corrosion resistance of nitride components.…”

“…Actually, better properties including higher surface hardness and better corrosion resistance, can be obtained by oxynitriding than those traditional nitriding, due to the oxides of Fe 3 O 4 and little Fe 2 O 3 . 5,8) Furthermore, diamond-like carbon (DLC) coatings can be used in order to improve the surface properties of steel molds because they combine unique mechanical, tribological and chemical properties. DLC lms are metastable amorphous carbon (sp 3 and sp 2 bonds) materials with superior tribological characteristics.…”

Enhancement of wear resistance by sand blasting-assisted rapid plasma nitriding for 304 austenitic stainless steel

“…Surface modification is necessary to overcome these shortcomings and enlarge its real applications. It was reported that plasma nitriding (PN) is one of the widely employed surface modification techniques that enrich the steel surface with nitrogen to enhance its mechanical and tribological properties [5][6][7][8][9][10][11]. Unfortunately, the existed PN generally takes dozens of hours or even longer duration to get the required properties, which results in low efficiency and high production cost [12][13][14].…”

Kinetics comparison between plasma oxynitriding and plasma nitriding and the application for AISI 1045 steel

“…Plasma nitriding (PN) is one of the widely used surface modification technologies [1][2][3][4][5], but few reports can be found about the kinetics analysis, therefore the process parameters have been normally determined by experience in the real applications, which results in tough process exploration and waste of energy and time [6,7]. Hence, it is of significant research value to analyse its kinetics.…”

“…Plasma oxynitriding (PON) technology was developed in our research group recently, we found that appropriate amount of air addition in traditional PN can effectively enhance nitriding efficiency, and the optimal air flow is 0.2 L min −1 [1-3], thus the process cycle time could be shortened and energy consumption could be reduced by adopting PON.…”