Título

INCREASE OF ADHESION FORCE OF SUPERHARD BORON NITRIDE COATINGS TO CEMENTED NANOCARBIDES USING INTERFACIAL LAYERS

INCREASE OF ADHESION FORCE OF SUPERHARD BORON NITRIDE COATINGS TO CEMENTED NANOCARBIDES USING INTERFACIAL LAYERS

Autoria

KUPCZYK, MACIEJ JAN; MICHALSKI, ANDRZEJ; SIWAK, PIOTR

KUPCZYK, MACIEJ JAN

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MICHALSKI, ANDRZEJ

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SIWAK, PIOTR

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DOI

10.5151/2594-5327-16939

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Resumo

.In the article the selected investigations of the adhesion force of thin, superhard coatings to the cutting edges made of cemented nanocarbides are presented. For identification of the adhesion force of coatings to substrate an automatic scratch tester constructed at Poznan University of Technology was applied. The estimation of the adhesion force (value of critical load measured during scratch test) was carried out on the base of the vibration signal. Results of investigations are pointed at the influence of a surface preparation (degreasing, etching, low and high-temperature sputtering) on a critical load values. It was found that the most effective method for surface preparation is low temperature sputtering. The influence of the TiC+TiN interfacial layer on increase of the adhesion force of BN coating to cemented carbides substrate was observed.

.In the article the selected investigations of the adhesion force of thin, superhard coatings to the cutting edges made of cemented nanocarbides are presented. For identification of the adhesion force of coatings to substrate an automatic scratch tester constructed at Poznan University of Technology was applied. The estimation of the adhesion force (value of critical load measured during scratch test) was carried out on the base of the vibration signal. Results of investigations are pointed at the influence of a surface preparation (degreasing, etching, low and high-temperature sputtering) on a critical load values. It was found that the most effective method for surface preparation is low temperature sputtering. The influence of the TiC+TiN interfacial layer on increase of the adhesion force of BN coating to cemented carbides substrate was observed.

Palavras-chave

Cubic boron nitride; Physical vapour deposition; Adhesion; Cutting tools.

Cubic boron nitride; Physical vapour deposition; Adhesion; Cutting tools.