%0 Journal Article
%3 Campos-JASTM-v8-n3-I103242-DL.1278696-1[1].pdf
%4 dpi.inpe.br/plutao/2011/06.11.02.28
%8 Mar.
%9 journal article
%@issn 1546-962X
%A Campos, Raonei Alves,
%A Contin, Andre,
%A Trava-Airoldi, Vladimir Jesus,
%A Barquete, Danilo Maciel,
%A Corat, Evaldo José,
%@secondarytype PRE PI
%B Journal of ASTM International
%D 2011
%F lattes: 0571562282397498 1 CamposConTraBarCor:2011:CVAlMC
%@secondarykey INPE--PRE/
%K Cutting tools, Diamond films, HFCVD, Thermal diffusion, Boronizing, Cemented carbide cutting tools, Cemented carbides, Chemical etching, Chemical vapor deposition diamond, Compressive residual stress, CVD Diamond films, Diamond coating, Energy dispersive x-ray, Film delamination, Gas concentration, HFCVD, Hot-filament chemical vapor deposition, Interface stress, Machining test, Microcrystalline diamond, Nanocrystalline diamond films, Nanocrystallines, NCD films, Qualitative analysis, Raman scattering spectroscopy, Thermal diffusion treatment.
%@archivingpolicy denypublisher denyfinaldraft
%N 3
%P 103242
%@secondarymark B3_ENGENHARIAS_II B4_ENGENHARIAS_III B5_ENGENHARIAS_IV B2_MATERIAIS
%T CVD of Alternated MCD and NCD Films on Cemented Carbide Inserts
%V 8
%@project CAPES 074/2008
%X Chemical vapor deposition (CVD) diamond coating of cemented carbide cutting tools has been an alternative to increase tool-life. Experiments have shown that residual stresses produced during films growth on cemented carbide inserts significantly increases with increasing film thickness of up to 20 ¦Ìm and usually leads to film delamination. In this work alternated micro- and nanocrystalline CVD diamond films have been used to relax interface stresses and to increase diamond coatings performance. Cemented carbide inserts have been submitted to a boronizing thermal diffusion treatment prior to CVD diamond films growth. After reactive heat treatment samples were submitted to subsequently chemical etching in acid and alkaline solution. The diamond films deposition was performed using hot-filament chemical vapor deposition (HFCVD) reactor with different gas concentrations for microcrystalline diamond (MCD) and nanocrystalline diamond (NCD) films growth. As a result, we present the improvement of diamond films adherence on cemented carbide inserts, evaluated by indentation and machining tests. Samples were characterized by scanning electron microscopy and energy dispersive X ray for qualitative analysis of diamond films. X-ray diffraction was used for phases identification after boronizing process. Diamond film compressive residual stresses were analyzed by Raman scattering spectroscopy.
%@area FISMAT
%@electronicmailaddress campos@las.inpe.br
%@electronicmailaddress
%@electronicmailaddress vladimir@las.inpe.br
%@electronicmailaddress
%@electronicmailaddress corat@las.inpe.br
%@e-mailaddress campos@las.inpe.br
%@documentstage not transferred
%@group LAS-CTE-INPE-MCT-BR
%@group LAS-CTE-INPE-MCT-BR
%@group LAS-CTE-INPE-MCT-BR
%@group
%@group LAS-CTE-INPE-MCT-BR
%@dissemination WEBSCI; PORTALCAPES; MGA; COMPENDEX.
%@usergroup administrator
%@usergroup banon
%@usergroup lattes
%@usergroup marciana
%@nexthigherunit 8JMKD3MGPCW/3ESR3H2
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Universidade Estadual de Santa Cruz¨CUESC, Ilh¨¦us,Bahia
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@versiontype publisher
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%@doi 10.1520/JAI103242
%2 dpi.inpe.br/plutao/2011/06.11.02.28.57