Title

ESTUDO DO COMPORTAMENTO TRIBOLÓGICO DE FILMES DUROS DEPOSITADOS POR PAPVD EM SUBSTRATO DE METAL DURO

TRIBOLOGICAL BEHAVIOSTUDY OF HARD COATINGS DEPOSITED IN HARD METAL SUBSTRATE BY PAPVD

Authorship

Schmitz, Cleomar; Siqueira, Carlos José de Mesquita; Torres, Ricardo Diego

Schmitz, Cleomar

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Siqueira, Carlos José de Mesquita

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Torres, Ricardo Diego

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DOI

10.5151/2594-5327-0443

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Abstract

Neste trabalho está sendo investigado o comportamento do coeficiente de atrito de filmes duros depositados sobre substrato de metal duro. Os filmes TiN, TiCN e TiAlN foram depositados através da técnica de Arco Catódico (PAPVD). O comportamento do coeficiente de atrito,

In this work is being investigated the behavior of the friction coefficient in hard coatings deposited on hard metal substrate. The TiN, TiCN and TiAlN coatings were deposited in hard metal through the technique of Cathodic Arc (PAPVD). The friction coefficient of the hard coatings was determined in a tribometer by the ball on flat technique. The friction coefficient of the hard coatings was determined for 1, 5 and 10 N loads. At a given load the friction coefficient was determined with the humidity changing from dry to a humidity of 50% condition. The surface of the hard metal substrate was changed by the microblasting operation. Microblasting increases the surface roughness. The friction coefficient of the coated hard metal with TiN lowered with the increase of the load. The humidity around 50% increases the friction coefficient. The samples that were submitted to microblasting the friction coefficient was higher mainly due to roughness of the samples

Keywords

Filmes duros; PAPVD; Coeficiente de atrito.

Hard coatings; PAPVD; Friction; Coefficient.