@InProceedings{SilvaCarnJesuTrav:2015:PeCaCo,
author = "Silva, William and Carneiro, J. and Jesus, L. and Trava-Airoldi,
Vladimir Jesus",
affiliation = "{Universidade Estadual Paulista (UNESP)} and {Pontificia
Universidade Catolica de Minas Gerais (PUC-MG)} and {Pontificia
Universidade Catolica de Minas Gerais (PUC-MG)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)}",
title = "Performance of Carbide Coated Tools with DLC in the Drilling of
SAE 323 Aluminum Alloy",
year = "2015",
organization = "The International Conference on Metallurgical Coatings and Thin
Films, 42. (ICMCTF).",
abstract = "It is widely known that the performance of a drilling tool
increases with the application of coatings. Nowadays, the most
widely used coatings for machining aluminum alloys are TiCN and
TiN, due to their mechanical properties such as high hardness with
low friction. This work presents a study on the performance of
cemented carbide coated with diamond-like carbon (DLC) in the
drilling of aluminum alloy, since the DLC is a promising material
as a coating and has the same mechanical characteristics of the
coatings used regularly. Samples of DLC coatings were deposited
using PECVD. Initially, the adhesion between film and substrate
did not occur. In order to avoid this, it was added intermediate
silicon layer. After an extensive investigation of the deposition
parameters, drilling coated tools were obtained. The
characterization of the tool substrate through the X-ray
diffraction showed the standard pattern of the WC-Co. For the
coating, the typical spectrum of DLC was checked by Raman
spectroscopy. An amount of two hundred pieces of molten on
aluminum alloy (SA-323) were chosen for the respective analyzes of
roundness, radial deviation, deviation of diameter and roughness.
All these geometries were measured as a function of the number of
holes produced by each tool, under coated and uncoated condition.
Visual inspections by SEM and EDX analysis of worn tool were
performed before and after each sequence. Finally, it was found
that the DLC coating improves the tool performance, improving the
geometry quality. However, the effect of peeling on the coating
gradually increased.",
conference-location = "San Diego, California",
conference-year = "20-24 apr.",
language = "en",
urlaccessdate = "28 abr. 2024"
}