نتایج جستجو برای: ion nitriding
تعداد نتایج: 206556 فیلتر نتایج به سال:
در این طرح پس از ساخت سیستم مناسب برای ایجاد پلاسما در رژیم تخلیه تابان و تهیه نمونهها و انجام تحلیلهای سختی سنجی و pixe، طی مراحل مختلف، فرآیند نیتروژندهی در شرایط متفاوت انجام شد. پس از پایان نیتروژندهی نمونهها، تحلیلهای سختی سنجی و pixe به همراه تحلیلهای xrd,sem,gds و rbs بر روی قطعات انجام شد. نتایج به دست آمده در مورد فولادهای 304.316و 321 به وضوح افزایش سختی حداکثر 450 درصد را در ب...
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...
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...
Plasma Surface Metallurgy /Alloying is a kind of surface metallurgy/alloying to employ low temperature plasma produced by glow discharge diffuse alloying elements into the substrate material form an alloy layer. It different with ion nitriding technology, which only applicable infiltration non-metallic elements. “Double Glow Technology”, also known as “Xu-Tec Process” can utilize any chemical i...
abstract ion selective electrodes (ises) are electrochemical sensors that respond selectivity to the activity of ionic species. an ion-selective electrode is an electrochemical device that uses a thin selective membrane or film as the recognition element, and is an electrochemical half-cell equivalent to other half-cells of the zeroth (inert metal in a redox electrolyte). in common methods o...
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...
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