Listar Ingeniería por tema "Nitretação a plasma"
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Caracterização de amostras de HI3 nitretadas a baixas pressões com diferentes misturas gasosas
(2010) [Artículo de periódico]A nitretação a plasma em baixas pressões e posterior deposição de filmes finos pode aumentar consideravelmente a resistência ao desgaste de matrizes de forjamento feitas de aço ABNT H13. A nitretação promove uma maior ... -
Comparison of surface properties modification by direct and active screen plasma nitriding of an ASTM M2 high-speed steel in a nitrogen rich gas mixture
(2021) [Artículo de periódico]The active screen plasma nitriding technique has been studied in recent years as a method to optimize surface properties in steel components, avoiding the negative effects caused in the conventional Direct Current plasma ... -
Heterogeneidade de temperaturas em fornos de nitretação a plasma
(2008) [Artículo de periódico]Nitretação a plasma é um processo que tem sido mais fortemente estudado nos últimos 30 anos e suas vantagens técnicas, econômicas e ambientais sobre os processos convencionalmente utilizados já estão bem estabelecidas no ... -
Influence of plasma nitriding with a nitrogen rich gas composition on the reciprocating sliding wear of a DIN 18MnCrSiMo6-4 steel
(2021) [Artículo de periódico]In this study, the sliding wear of a DIN 18MnCrSiMo6-4 continuous cooling bainitic steel plasma nitrided with a nitrogen rich gas composition was investigated. To evaluate the influence of processing time and temperature ... -
Metallurgical response of an AISI 4140 steel to different plasma nitriding gas mixtures
(2013) [Artículo de periódico]Plasma nitriding is a surface modification process that uses glow discharge to diffuse nitrogen atoms into the metallic matrix of different materials. Among the many possible parameters of the process, the gas mixture ... -
Microestrutura e propriedades de desgaste do aço bainítico de resfriamento contínuo DIN 18MnCrSiMo6-4 nitretado a plasma em diferentes temperaturas
(2020) [Artículo de periódico]Os novos aços bainíticos de resfriamento contínuo (CCBS) são uma excelente alternativa quando se requer elevada dureza, tenacidade e resistência à fadiga. Contudo, estima-se que a taxa de desgaste dos CCBS seja insuficiente ... -
Microstructure and wear properties of a low carbon bainitic steel on plasma nitriding at different N2-H2 gas mixtures
(2022) [Artículo de periódico]For the first time, the influence of gas mixture on first damage resistance of a plasma nitrided DIN 18MnCrSiMo6-4 bainitic steel was investigated. Samples were nitrided at 500 °C with three different N2 -H2 gas mixtures, ... -
New ASPN high efficiency treatment of ASTM M2 steel
(2021) [Artículo de periódico]Plasma nitriding treatments are applied to achieve excellent surface properties on steel parts and tools. Active screen plasma nitriding (ASPN) does not have the defects presents in direct nitriding plasma treatments (DCPN). ... -
Residual stress-affected diffusion during plasma nitriding of tool steels
(2004) [Artículo de periódico]Plasma nitriding of tool materials is common practice to improve the wear resistance and lifetime of tools. Machining-induced compressive residual stresses in shallow layers of some tenths of microns are observed accompanied ... -
Response of a DIN 18MnCrSiMo6-4 continuous cooling bainitic steel to different plasma nitriding gas mixtures
(2020) [Artículo de periódico]Continuous cooling bainitic steels has been widely used in industrial processes owing to its excellent mechanical properties and toughness. Although the surface properties of them are acceptable for many purposes, for their ... -
Response of a DIN 18MnCrSiMo6-4 continuous cooling bainitic steel to plasma nitriding with a nitrogen rich gas composition
(2020) [Artículo de periódico]The use of continuous cooling bainitic steels can provide a more energy efficient manufacturing route. However, for their use in mechanical components like gears, it is necessary to improve their surface properties without ... -
Surface processing to improve the fatigue strength of bainitic steels : an overview
(2019) [Artículo de periódico]Currently, one of the major challenges for automotive industries is to reduce the weight and energy consumption of vehicles by using stronger and advanced low-cost materials. Conventional solutions using quenched and ...