Micro Abrasive Wear
Mostrando 13-16 de 16 artigos, teses e dissertações.
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13. Influência de parâmetros microestruturais no comportamento tribológico de ligas ferrosas multicomponentes / Influence of microstructural parameters on the tribological behavior of multicomponent ferrous alloys
The aim of this work is to evaluate the effect of microstructural parameters (eutectic carbides and matrix hardness) of multi-component ferrous alloys on tribological behavior in sliding wear and micro-abrasive wear. The samples were two series of alloys with variable vanadium (V serie) and molybdenum (M serie) contents and fixed amounts of other elements. E
Publicado em: 2007
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14. Estudo do comportamento do coeficiente de desgaste e dos modos de desgaste abrasivo em ensaios de desgaste micro-abrasivo. / Wear coefficient and wear mode transition study in micro-abrasive wear testing.
This work presents a study on the behavior of different materials under the action of micro-abrasive wear. A micro-abrasive wear testing machine with fixed sphere was designed and constructed, presenting a mechanical configuration with differences with respect to those found in the literature (Gee et al., 2005). M2 tool steel and WC-Co P20 were used as testi
Publicado em: 2006
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15. Deposição de revestimentos compositos metal-ceramico WC-Co por fusão a laser : avaliação da resistencia ao desgaste e a corrosão
In the present work the laser c1adding process was used to produce WC-Co composite coatings with varied fractions of WC. The AISI 1045 steel was used as substrate. The coatings were produced afier severa! tests, which have permitted the determination of optimum operational parameters. The characterization ofthe coatings was performed by optic microscopy, sca
Publicado em: 2004
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16. Obtenção de revestimentos dúplex por nitretação a plasma e PVD-TiN em aços ferramenta AISI D2 e AISI H13. / Duplex coatings on AISI H13 and AISI D2 tool steels by using plasma nitriding and TiN-PVD.
In this work, the influence of both the microstructure and the load-bearing capacity of nitrided layers, formed on top of AISI D2 and AISI H13 tool steels, on adhesion and wear resistance of PVD-TiN coatings was studied. The threshold nitriding potential curves for the above mentioned steels and the optimum conditions of the pre-treatments which increased th
Publicado em: 2003