A novel method to mitigate residual stress in CVD diamond film on steel substrates with a single intermediate layer

Autor(es)

Damm, D. D. ^{[1, 2]} ; Contin, A. ^{[3, 1]} ; Cardoso, L. D. R. ^[1] ; Trava-Airoldi, V. J. ^[1] ; Barquete, D. M. ^[4] ; Corat, E. J. ^[1]

Afiliação do(s) autor(es)

^[1] Natl Inst Space Res, Sao Jose Dos Campos, SP - Brazil

^[2] Sao Paulo Fed Univ, Sao Jose Dos Campos, SP - Brazil

^[3] Univ Fed Goias, Goiania, Go - Brazil

^[4] Univ Estadual Santa Cruz, Ilheus, BA - Brazil

• Tipo de documento: Artigo Científico
• Fonte: SURFACE & COATINGS TECHNOLOGY; v. 357, p. 93-102, JAN 15 2019.
• Citações Web of Science: 0

Resumo

Direct deposition of CVD diamond on steel produces useless diamond film which delaminates on cooling from deposition temperature {[}1-9]. The majority of current research efforts focus on single and multiple intermediate layers for CVD diamond deposition on steel substrate. There are many excellent diffusional barriers to transition metals migration from bulk to substrate surface to form graphitic sp(2) bonds. However, there is no practical solution to the thermal expansion coefficient (TEC) mismatch between diamond and steels. In this work we use a vanadium carbide thermodiffused coating as the intermediate layer between diamond and AISI O1 steel substrate. It acts as a diffusional barrier and mitigates diamond residual stress after cooling from CVD temperature. Increasing vanadium carbide layer thickness creates a transition zone that attenuates diamond residual stress. Up to now, the vanadium carbide is the only single layer barrier able to inhibit graphitic phase formation and mitigate residual stress in diamond films to the level of 0.54 GPa. (AU)

• Processo FAPESP: 15/25149-2 - Estudo da interface de carboneto de vanádio desenvolvidas através da termodifusão e por laser cladding para deposição de diamante HFCVD.
• Beneficiário: Djoille Denner Damm
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 12/15857-1 - Estudos científicos e aplicações inovadoras em diamante-CVD, Diamond-Like Carbon (DLC) e carbono nanoestruturado, obtidos por deposição química na fase vapor
• Beneficiário: Vladimir Jesus Trava-Airoldi
• Modalidade de apoio: Auxílio à Pesquisa - Temático