Synthesis of Vanadium Interface for HFCVD Diamond Deposition on Steel Surface

• Autor(a) principal: Damm,Djoille Denner
• Data de Publicação: 2017
• Outros Autores: Contin,Andre, Trava-Airoldi,Vladimir Jesus, Vasconcelos,Getúlio de, Barquete,Danilo Maciel, Corat,Evaldo J.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Materials research (São Carlos. Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000800248
• topic: Vanadium Carbide; Hard Coatings; Laser Cladding; Thermal Stress; Diffusion Barrier and HFCVD Diamond

Laser cladding of vanadium carbide powder developed an interlayer on AISI D6 steel as a diffusional barrier and to relief thermal residual stress. Laser cladding experiments varied resolution (DPI) and scanning speed (mm/s). CVD diamond deposition on this interface went on by HFCVD technique. The coatings were characterized by X-ray diffraction analysis (XRD), scanning electron microscopy (SEM-FEG) and Raman spectroscopy. Ordered state V8C7 phase prevailed in the interlayer. The thickness of heat-affected zone (HAZ) and Laser Cladding Vanadium Coating (LCVC) were 37 µm and 5 µm, respectively, in the best layer produced. The diamond film showed good quality and morphology. The Raman peak at 1342,13 cm-1 shows the residual stresses level undertaken at the film-substrate interface and the corresponding adhesion, demonstrating the suitability of the VC laser cladding process to CVD diamond films deposition.