In this study, it was aimed to improve the surface hardness by applying gas nitriding treatment dual-phase ductile cast iron and produce irons with a good strength-ductility combination. Thus, has been tried develop high wear resistance, strength, ductility. Ductile specimens microstructure consisting of ferrite + martensite were produced oil quenching at 70 °C after intercritical austenitizing...

The influence of regime (temperature, composition gas mixture and its pressure) energy characteristics (voltage, current density, specific discharge power) at hydrogen-free-nitriding in a glow (HFNGD) on the structure, phase nitrided layers is investigated. It shown that due to combination parameters HFNGD it possible achieve physical chemical indicators set by operating conditions. traditional...

Titanium and its alloys are widely used in aircraft, rocket production, shipbuilding, machine industry, chemical and food industry, medicine due to their high specific strength, good corrosion resistance and biological passivity. However, titanium has properties which limit its application as construction material. Particularly, tendency to surface adhesion and galling at friction results in it...

Avinit duplex technologies have been developed, combining N plasma nitriding of finished high-precision parts with subsequent application superhard antifriction coatings in a single technological process Due to the absence brittle layer on nitrided surface after precision nitriding, preservation original geometric dimensions that do not require further mechanical refinement, and compatibility p...

The surface modification processes such as hard facing, case carburizing, thermal spraying, ion nitriding, tough nitriding, and others, are some of the important techniques being adopted for providing enhanced life for parts and components, in service. Among them, plasma spray and High Velocity Oxy Fuel (HVOF) spray coatings are popular and widely used. In this investigation, plasma & High Velo...

In this paper active screen plasma nitriding (ASPN) is used to chemically modify the surface of UHMWPE. This is an unexplored and new area of research. ASPN allows the homogeneous treatment of any shape or surface at low temperature; therefore, it was thought that ASPN would be an effective technique to modify organic polymer surfaces. ASPN experiments were carried out at 120 °C using a dc plas...

The influence of gas nitriding surface treatment on the superelastic Ti-23Nb-0.7Ta-2Zr-0.5N alloy was evaluated. A thorough characterization of bare and nitrided Ti-based alloy and pure Ti was performed in terms of surface film composition and morphology, electrochemical behaviour, and short term osteoblast response. XPS analysis showed that the nitriding treatment strongly influenced the compo...