The paper investigates the influence of ion-nitriding process on microstructure, corrosion resistance, and tensile strength at elevated temperatures Haynes 282 nickel superalloy specimens produced by Direct Metal Laser Sintering (DMLS) technique. study was performed for two conditions, i.e., as-built DMLS method + covered a layer containing CrN Cr2N phases. An analysis surface morphology reveal...

H-13 steel surface was duplex-treated using Plasma Nitriding (PN) and PVD coatings to solve the thermal fatigue problem faced in die-casting applications. Chromium-based multilayer CrN/Cr (m-CrN) multi-component aluminium–titanium-based AlTiN (m-AlTiN) were deposited a cathodic arc deposition technique after plasma nitriding with different case-depths of 50 µm 200 µm. The structural, tribologic...

In industries, components must operate under extreme conditions such as high load, speed, temperature and chemical environment. Materials are selected according to commercial availability, cost their properties strength, hardness, etc. AISI 904L is a high-alloy stainless steel with low carbon content, poor surface hardness wear characteristics. Many engineering failures caused by fatigue, corro...

This paper presents the results of research on influence plasma nitriding technology parameters working surface deformation hypoid gears. Blue light with non-contact measuring devices is used to determine gears after nitriding. The study has determined a regression equation showing gear. minimum optimization value at planning area 0.0071746 permeation temperature TL=4.89oC, time h=510h, and gas...

The reaction of ammonia decomposition and nitriding reaction as an example of the parallel reactions were studied. A surface reaction was assumed as the rate limiting step. The experiments were carried out in the range of temperatures from 623 to 723 K. Mixtures of different iron nitrides (gamma'-Fe(4)N, epsilon-Fe(3-2)N) were obtained. Differential tubular reactor with thermogravimetric (TG) m...

AISI 304 stainless steel categorized under austenitic, has good resistance to corrosion and applicable for high pitting stresses. But it poor hardness, sterngth wear. In order overcome the above problem, various hardening techniques like nitriding, carburizing, carbonitriding, Cyaniding etc are preferred. this work, aqueous soluted nitriding process is carried out improve surface hardness wear ...