@Article{ContinVaDaTrCaCo:2017:CoInLa,
author = "Contin, Andr{\'e} and Vasconcelos, Get{\'u}lio de and Damm,
Djoille D. and Trava Airoldi, Vladimir Jesus and Campos, Raonei A.
and Corat, Evaldo Jos{\'e}",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
de Estudos Avan{\c{c}}ados (IEAv)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Universidade Federal do Sul e Sudoese do
Par{\'a}} and {Instituto Nacional de Pesquisas Espaciais
(INPE)}",
title = "Composite intermediate layer for CVD diamond film on steel
substrate",
journal = "MRS Advances",
year = "2017",
volume = "1",
pages = "1--6",
abstract = "The union of the unique diamond properties with steel (most common
substrate material) provides a new solution for machine parts
under critical mechanical conditions and severe environmental.
However, CVD diamond coating directly on steel comes with several
issues. The fundamental reasons for the lack of adhesion are an
iron catalytic effect, the high carbon solubility in iron and high
mismatch in thermal expansion coefficient of diamond and steel.
The use of interlayer may solve these issues acting as a diffusion
barrier, for both iron and carbon, and match thermal expansion
coefficients. Several articles describe the PVD deposition or
electroplated interlayer. In the present study, the diamond film
coated steel with an intermediate barrier deposited by laser
cladding process. In this novel technique, laser irradiation melts
the powder (preplaced) and the substrate surface to create the
coating on a steel substrate. We used the SiC/Ti and SiC/Cu powder
mixtures to create the intermediate barrier. Diamond film
deposition was carried out in an HFCVD reactor (Hot Filament
Chemical Vapor Deposition). The samples characterization included
X-ray Diffraction (XRD); Field Emission Gun - Scanning Electron
Microscopy (FEG-SEM) and Raman Scattering Spectroscopy (RSS).
Results showed that laser incidence dissociated partially the SiC
powder, forming FeSi, Cu3Si phases. Further, the composite layer
assisted the high thermal stress relief in steel/diamond
interface.",
doi = "10.1557/adv.2017.22",
url = "http://dx.doi.org/10.1557/adv.2017.22",
issn = "2059-8521",
label = "lattes: 5450987692265022 1 ContinVaDaTrCaCo:2017:CoInLa",
language = "en",
urlaccessdate = "28 mar. 2024"
}