Improvement of Wear Performance of Nano-Multilayer PVD Coatings under Dry Hard End Milling Conditions Based on Their Architectural Development

Chowdhury, S. ; Beake, B.D. ; Yamamoto, K. ; Bose, B. ; Aguirre, M. (Universidad de Zaragoza) ; Fox-Rabinovich, G.S. ; Veldhuis, S.C.

Resumen: The TiAlCrSiYN-based family of PVD (physical vapor deposition) hard coatings was specially designed for extreme conditions involving the dry ultra-performance machining of hardened tool steels. However, there is a strong potential for further advances in the wear performance of the coatings through improvements in their architecture. A few different coating architectures (monolayer, multilayer, bi-multilayer, bi-multilayer with increased number of alternating nano-layers) were studied in relation to cutting-tool life. Comprehensive characterization of the structure and properties of the coatings has been performed using XRD, SEM, TEM, micro-mechanical studies and tool-life evaluation. The wear performance was then related to the ability of the coating layer to exhibit minimal surface damage under operation, which is directly associated with the various micro-mechanical characteristics (such as hardness, elastic modulus and related characteristics; nano-impact; scratch test-based characteristics). The results presented exhibited that a substantial increase in tool life as well as improvement of the mechanical properties could be achieved through the architectural development of the coatings.

Idioma: Inglés

DOI: 10.3390/coatings8020059

Año: 2018

Publicado en: COATINGS 8, 2 (2018), 59[14 pp]
ISSN: 2079-6412

Factor impacto JCR: 2.33 (2018)

Categ. JCR: MATERIALS SCIENCE, COATINGS & FILMS rank: 7 / 20 = 0.35 (2018) - Q2 - T2

Tipo y forma: Article (Published version)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)