Self-lubricating coatings can be used to increase the service life of machine parts which are subjected high mechanical loads. The present work is concerned with combination nitriding and a subsequent Ti-doped MoS2 coating. focus investigations on impact compound layer wear behavior coating since changes in surface topography due growth pore formation inside layers expected have an adhesion str...

Abstract A typical nitrogen expanded austenite layer is formed by plasma-based low-energy ion implantation (PBLEII) on AISI 304L austenitic stainless steel at a moderate temperature of 380 °C. The dislocation self-organization structure in the characterized as an evolution from partial and Lomer-Cottrell dislocations inner near interface to multilayer stacking faults outer nitrided layer. self-...

Abstract The paper presents a comparison of microhardness, fatigue and high temperature corrosion Inconel 740H nickel alloy in its as-received state the same material with nitrided surface layers. layers were produced using traditional glow discharge nitriding (specimens on cathode potential) an active screen at plasma potential). A microstructure was characterized through scanning electron mic...

In industry, mechanical components must operate under conditions such as variable load, speed, temperature and various chemical environments. Materials are selected depending on their application. They for commercial availability, cost properties strength, hardness etc. Many engineering errors due to fatigue, corrosion poor wear resistance occurring its surface. This causes cracks in the surfac...

A special additive manufacturing (AM), called as Direct Metal Laser Sintering (DMLS), is a technology that produces 3D workpieces using wide range of different metals raw materials. The aim current research to investigate the plasma nitriding effect on DMLS produced samples. direct treatment was achieved at 440 °C for 4 hours with 75%N2 – 25%H2 gas mixture. Before treatment, 316L austenitic sta...

In order to fabricate a titanium alloy with superior wear resistance and fatigue strength, fine particle peening (FPP) was introduced as post-treatment after gas blow induction heating (GBIH) nitriding. The surface characteristics of the treated were examined using X-ray diffraction, scanning electron microscopy, laser microscopy micro-Vickers hardness tester. GBIH nitriding FPP formed nitrided...

There are a number of ways to improve the corrosion and abrasion resistance of metals, including alloying, anodizing, nitriding and application of protective thin films. Alloying involves generating a binary phase diagram to determine the optimum composition and temperature dependence. For example, copper alloys known as “bronzes” offer high strength, abrasion resistance and high temperature co...