A facile method was successfully developed to prepare strontium-tantalum perovskite oxynitride, SrTaO2N, and its solid solutions. Urea employed as a nitriding agent eliminate the use of toxic NH3 gas. In addition, utilization sol-gel-derived Ta2O5 gel Ta precursor allowed for completion nitridation within shorter period at lower calcination temperature compared with conventional ammonolysis pro...

This article presents research on the possibility of obtaining a hardened surface layer via nitriding in coupled plasma (ICP) for HS6-5-2 steel. The subject investigation was influence process parameters properties obtained layers. layers were characterized using an optical microscope, SEM (Scanning Electron Microscope), EDS (Energy Dispersive Spectroscopy), XRD (X-Ray Diffraction), and microha...

In this study the effects on resistance to corrosion of a low alloy steel after plasma nitriding has been reported. Nitriding was performed at temperature 450 °C and also 520 for same duration 10 h in nitrogen hydrogen (80:20) gas mixture. Sample holder biased −250 V working pressure kept around 500 Pa. After samples along with bare were exposed X-ray diffraction (XRD) understand phase formatio...

The article presents the results of tribological research on most promising way to restore and increase wear resistance engine valves by developing a method gas nitriding. It is established that with increasing operating time guide bushings outlet connections out displacement axis forming surfaces hole. Characteristic significant axes inlet not detected, ie. their diameter hole 1.5 ... 3 times ...

Nitriding of Fe-1 wt.% Cu and Fe-5 alloys at 813 K leads to the formation predominantly γ′-iron nitride phase (γ′-Fe4N) when using nitriding conditions, which lead pronounced ε-iron (ε-Fe3N1+x) upon pure α-Fe. Energy dispersive X-ray analysis reveals that developing γ′ can attain a content corresponding base material. In contrast, tiny amounts ε-nitride eventually develop contain considerably l...