Influence of pre-milling of Cr3C2-25 NiCr spray powder on the fatigue life of HVOF-sprayed coating on ASTM A516 steel substrate
dc.contributor.author | Oliveira, Rosivânia da Paixão Silva | pt_BR |
dc.contributor.author | Cogo, Gabriel | pt_BR |
dc.contributor.author | Nascimento, Brenno Lima | pt_BR |
dc.contributor.author | Reis, Matheus Mariano da Silva | pt_BR |
dc.contributor.author | Takimi, Antonio Shigueaki | pt_BR |
dc.contributor.author | Griza, Sandro | pt_BR |
dc.contributor.author | Bergmann, Carlos Perez | pt_BR |
dc.date.accessioned | 2023-08-01T03:34:36Z | pt_BR |
dc.date.issued | 2023 | pt_BR |
dc.identifier.issn | 1996-1944 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/262984 | pt_BR |
dc.description.abstract | The aim of the present investigation is to evaluate the influence of the powder size of Cr3C2-25NiCr spraying powder on the fatigue behavior of HVOF-sprayed coating on the ASTM A516 steel substrate. Conventional commercial Cr3C2-25NiCr spraying powder was previously treated through high-energy milling. The crystallite sizes of milled powders were measured by X-ray diffraction and transmission electronic microscopy. Three different powder formats of the same Cr3C2-25NiCr composite were subjected to HVOF spraying to produce (i) a Milled-Coating (from high-energy milled spray powder), (ii) an Original-Coating (from conventional commercial spray powder), and (iii) a 50%–50% mixture of both (Milled + Original-Coating). The same spraying conditions were adopted for all the assessed cases. The sprayed coatings were investigated through the Knoop hardness test and SEM-EDS analysis. In addition, 3-point bending fatigue tests were conducted at different stress levels up to 107 cycles. The coating morphology and roughness effects on fatigue behavior were analyzed. The Cr3C2-25NiCr milled coating presented a lower fatigue life above the fatigue limit and a higher fatigue limit than other coatings; this outcome could be attributed to its lower surface roughness and finer grain size microstructure. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Materials. Basel. Vol. 16, n. 4 (2023), [Article] 1593, p. 1-14 | pt_BR |
dc.rights | Open Access | en |
dc.subject | Cr3C2 -25NiCr | en |
dc.subject | Revestimentos protetores | pt_BR |
dc.subject | Spray powder | en |
dc.subject | Fadiga (Engenharia) | pt_BR |
dc.subject | Moagem de alta energia | pt_BR |
dc.subject | High-energy milling | en |
dc.subject | HVOF | en |
dc.subject | Fatigue | en |
dc.title | Influence of pre-milling of Cr3C2-25 NiCr spray powder on the fatigue life of HVOF-sprayed coating on ASTM A516 steel substrate | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 001172023 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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