Study of interfaces by laser cladding for CVD diamond deposition

• Grant number: 13/25939-8
• Support type: Scholarships in Brazil - Doctorate
• Effective date (Start): May 01, 2014
• Effective date (End): March 31, 2017
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• Principal researcher: Evaldo Jose Corat
• Grantee: Andre Contin
• Home Institution: Instituto Nacional de Pesquisas Espaciais (INPE). Ministério da Ciência, Tecnologia e Inovações (Brasil). São José dos Campos , SP, Brazil
• Associated research grant: 12/15857-1 - Scientific studies and innovation application on CVD diamond, DLC and carbon nanostructures obtained by chemical vapor deposition technique, AP.TEM

Abstract

The use of CVD diamond films on cutting tools is an application of great interest due to their unique properties. Its use aims to increase tool life, in addition to get significant increases in speed machining due to the low coefficient of friction of the diamond. Therefore it desires the low cost-benefit ratio of the coating with synthetic diamond; on the other hand this technology has found difficulties. The goal of this project is to deposit adherent CVD diamond films on substrates of 304 stainless steel, high speed steel and hard metal (WC- TiC - Co), using a new technique of forming intermediate barrier, made by laser cladding process, the silicon carbide (SiC) will be the basic powder As part of the studies is proposed to use a binder in the sintered layer. Process of seeding with diamond powder will submit the samples. The reactor HFCVD (Hot Filament Chemical Vapor Deposition) will carry out the deposition of diamond films, with different concentrations of gases for microcrystalline and nanocrystalline films. The indentation and machining tests will evaluate the improve adhesion of diamond films on substrates. Scanning Electron Microscopy (SEM) will characterize the samples for qualitative analysis of the diamond films. X-ray diffraction will identify the phase after laser cladding process. Raman Spectroscopy will calculate the compressive residual stress of the film. The test micro - scratching will measure the level of adhesion of the silicon carbide on the substrates. (AU)

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

FRAGA, M. A.; CONTIN, A.; RODRIGUEZ, L. A. A.; VIEIRA, J.; CAMPOS, R. A.; CORAT, E. J.; TRAVA AIROLDI, V. J.. Nano- and microcrystalline diamond deposition on pretreated WC-Co substrates: structural properties and adhesion. MATERIALS RESEARCH EXPRESS, v. 3, n. 2, FEB 2016. (14/18139-8, 13/25939-8, 12/15857-1)

VIEIRA, JOSE; CONTIN, ANDRE; FRAGA, MARIANA AMORIM; CORAT, EVALDO JOSE; AIROLDI, VLADIMIR TRAVA. Growth and characterization of multilayer hot-filament chemical vapor deposition diamond coatings on WC-Co substrates. SURFACE INNOVATIONS, v. 7, n. 1, p. 4-11, MAR 2019. (14/18139-8, 13/25939-8, 12/15857-1)

DAMM, DJOILLE DENNER; CONTIN, ANDRE; BARBIERI, FERNANDO CRUZ; TRAVA-AIROLDI, VLADIMIR JESUS; BARQUETE, DANILO MACIEL; CORAT, EVALDO JOSE. Interlayers Applied to CVD Diamond Deposition on Steel Substrate: A Review. COATINGS, v. 7, n. 9, SEP 2017. (15/25149-2, 13/25939-8, 12/15857-1)

CONTIN, ANDRE; DE VASCONCELOS, GETULIO; DAMM, DJOILLE D.; TRAVA-AIROLDI, VLADIMIR J.; CAMPOS, RAONEI A.; CORAT, EVALDO J.. Composite intermediate layer for CVD diamond film on steel substrate. MRS ADVANCES, v. 2, n. 41, p. 2211-2216, 2017. (13/25939-8, 12/15857-1)