Wear behaviour of plasma nitrided steels at ambient and elevated temperatures

Nitriding of 4140 Annealed Low Alloy Steel in RF Plasma

“…It should be observed that, while the compound layer provides a better corrosion resistance [1,2], the diusion zone concentrates the load bearing capacity and fatigue strength [3,4]. Then long treatments weaken the surface hardness and a deeper diusion layer the wear [5]. The wear rate is a function of the surface hardness and layer depth but some amount of the diusion layer thickness is needed to support the thin surface layer [6].…”

Investigation on the High Vacuum Tribological Characteristics of Surface Treated Nuclear Grade Stainless Steel Type AISI 316 LN at 25 to 500 °C

“…In high vacuum environment, metals will become atomically clean due to the absence of oxygen or oxide layer and moisture which usually separates the sliding surfaces and act as lubricants thereby reducing friction and wear [8] and [9]. Only few researchers have done the dry wear tests at elevated temperatures on plasma nitride (PN) coatings [10] and [11]. They have reported that the wear rate was reduced at elevated temperature due to the formation of oxide layer.…”

Microstructure and corrosion resistance of the layers formed on the surface of precipitation hardenable plastic mold steel by plasma-nitriding

“…The thickness and compositions of these layers are functions of treatment temperature, and time and composition of the base material [6][7][8][9]. The diffusion layer determines the strength of the nitrided layer, as well as its fatigue strength [10,11], while the compound layer determines the tribological characteristics and corrosion resistance [12][13][14]. The e-nitride shows better corrosion resistance when compared with g 0 -nitride because of its crystalline structure and higher nitrogen content [15].…”