Evaluation of the Adhesion of Ultrananocrystalline Diamond Coatings on WC-Co Substrates

Autor(es)

Fraga, M. A. ; Contin, A. ; Vieira, J. ; Barbosa, D. ; Campos, R. ; Corat, E. ; Trava Airoldi, V. J.

• Tipo de documento: Artigo Científico
• Fonte: MATERIALS TODAY-PROCEEDINGS; v. 4, n. 11, p. 6-pg., 2017-01-01.

Resumo

In order to improve the cutting performance and lifetime of WC-Co hard metal tools, the issues related to synthesis and adherence of micro-and nanocrystalline CVD diamond coatings on these tools has been frequently discussed in the literature. However, there are few studies focused on ultrananocrystalline diamond (UNCD) coatings. In this study, we report the results of the characterization of UNCD coatings with different thicknesses with the purpose of evaluating their adhesion to WC-9% Co substrates. The structure and morphology of the UNCD coatings as a function of their thicknesses were investigated by Raman spectroscopy, atomic force microscopy (AFM) and field emission gun scanning electron microscope (FEG-SEM) analysis. The UNCD coating- substrate adhesion was evaluated by means of indentation tests with a load of 1000N. (C) 2016 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 13/25939-8 - Estudo de interfaces aplicadas por laser cladding para deposição de diamante CVD
• Beneficiário: Andre Contin
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 14/18139-8 - Estudos de crescimento e de dopagens de diamante-CVD mono cristalino, colorido via descarga em mW 2,45 GHz de alta potência
• Beneficiário: Mariana Amorim Fraga
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 12/15857-1 - Estudos científicos e aplicações inovadoras em diamante-CVD, Diamond-Like Carbon (DLC) e carbono nanoestruturado, obtidos por deposição química na fase vapor
• Beneficiário: Vladimir Jesus Trava-Airoldi
• Modalidade de apoio: Auxílio à Pesquisa - Temático