Plasma Nitrocarburizing
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Morphology of the DIN 100Cr6 Case Hardened Steel after Plasma Nitrocarburizing Process
Nitrocarburizing is considered one of the most important thermochemical treatments for surface modification of metallic materials and involves the simultaneous diffusion of nitrogen and carbon onto the surface. Understanding and controlling the formation of the nitrocarburized layer have considerable industrial interest due to the improvements regarding wear
Mat. Res.. Publicado em: 04/04/2019
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2. Mass Spectrometry Study of Ammonia Formed During Plasma Nitrocarburizing and Nitriding Processes
In this work, we used mass spectrometry to investigate ammonia (NH3) formed during the nitrocarburizing and nitriding processes of α-Fe sintered and low alloy steel by using d.c. glow discharges in different N2/H2/CH4 gas concentration mixtures. Experiments were conducted using two different configurations: one to collect and analyze species probed primaril
Mat. Res.. Publicado em: 16/07/2018
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3. AISI 1005 Steel Plasma Treated by Different Thermochemical Surface Treatments
Abstract To modify the surface structure of AISI 1005 steel and its properties without any dimensional loss, different plasma surface treatments were performed at low temperatures (500 ºC) in this study. The samples were subjected to single plasma treatments including: nitriding (N5% and N3%), carburizing (CE) and ferritic nitrocarburizing (NC) and to duple
Mat. Res.. Publicado em: 01/08/2016
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4. Low-temperature Plasma Assisted Thermochemical Treatments of AISI 420 Steel: Comparative Study of Obtained Layers
Formation of metastable C–, N–, or even Formation of metastable C–, N–, or even C/N– expanded phases can be observed for typical non-equilibrium conditions attained at the plasma assisted thermochemical treatments when temperatures relatively low are used. In present work, kinetics data are considered in a comparative study comprising low-temperatu
Mat. Res.. Publicado em: 03/11/2015
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5. Influência da mistura gasosa nos processos de nitretação e nitrocarbonetação a plasma do aço AISI 4140 / Influence of gas mixture on plasma nitriding and plasma nitrocarburizing process of AISI 4140 steel
Neste trabalho realizaram-se varias nitretações e nitrocarbonetações a plasma em um aço AISI 4140 temperado e revenido, com o objetivo de avaliar a magnitude do parâmetro “composição gasosa” nas propriedades metalúrgicas das camadas formadas após a nitretação. Para a realização deste trabalho foram necessárias adaptações do forno e exper
Publicado em: 2008
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6. Efeito do carbono no processo de nitrocarburização com plasma pulsado da liga metalica AISI H13 / Carbon effect on pulsed plasma nitrocarburizing process in AISI H13 tool steel
This work presents a study on the effect of the incorporation of carbon and nitrogen on he formation of a singlephase homogeneous layer, composed by e -Fe2-3(C,N) carbonitrides, on the top surface of a AISI H13 tool steel. We also present studies on the effect of the incorporation of these elements (C and N) in the microstructure and in the mechanical and ch
Publicado em: 2007