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Influence of Pre-Milling of Cr(3)C(2)-25 NiCr Spray Powder on the Fatigue Life of HVOF-Sprayed Coating on ASTM A516 Steel Substrate

The aim of the present investigation is to evaluate the influence of the powder size of Cr(3)C(2)-25NiCr spraying powder on the fatigue behavior of HVOF-sprayed coating on the ASTM A516 steel substrate. Conventional commercial Cr(3)C(2)-25NiCr spraying powder was previously treated through high-ener...

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Autores principales: Oliveira, Rosivânia da P. S., Cogo, Gabriel R., Nascimento, Brenno L., Reis, Matheus M. S., Takimi, Antonio, Griza, Sandro, Bergmann, Carlos P.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9961330/
https://www.ncbi.nlm.nih.gov/pubmed/36837223
http://dx.doi.org/10.3390/ma16041593
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author Oliveira, Rosivânia da P. S.
Cogo, Gabriel R.
Nascimento, Brenno L.
Reis, Matheus M. S.
Takimi, Antonio
Griza, Sandro
Bergmann, Carlos P.
author_facet Oliveira, Rosivânia da P. S.
Cogo, Gabriel R.
Nascimento, Brenno L.
Reis, Matheus M. S.
Takimi, Antonio
Griza, Sandro
Bergmann, Carlos P.
author_sort Oliveira, Rosivânia da P. S.
collection PubMed
description The aim of the present investigation is to evaluate the influence of the powder size of Cr(3)C(2)-25NiCr spraying powder on the fatigue behavior of HVOF-sprayed coating on the ASTM A516 steel substrate. Conventional commercial Cr(3)C(2)-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 Cr(3)C(2)-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 10(7) cycles. The coating morphology and roughness effects on fatigue behavior were analyzed. The Cr(3)C(2)-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.
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spelling pubmed-99613302023-02-26 Influence of Pre-Milling of Cr(3)C(2)-25 NiCr Spray Powder on the Fatigue Life of HVOF-Sprayed Coating on ASTM A516 Steel Substrate Oliveira, Rosivânia da P. S. Cogo, Gabriel R. Nascimento, Brenno L. Reis, Matheus M. S. Takimi, Antonio Griza, Sandro Bergmann, Carlos P. Materials (Basel) Article The aim of the present investigation is to evaluate the influence of the powder size of Cr(3)C(2)-25NiCr spraying powder on the fatigue behavior of HVOF-sprayed coating on the ASTM A516 steel substrate. Conventional commercial Cr(3)C(2)-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 Cr(3)C(2)-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 10(7) cycles. The coating morphology and roughness effects on fatigue behavior were analyzed. The Cr(3)C(2)-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. MDPI 2023-02-14 /pmc/articles/PMC9961330/ /pubmed/36837223 http://dx.doi.org/10.3390/ma16041593 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Oliveira, Rosivânia da P. S.
Cogo, Gabriel R.
Nascimento, Brenno L.
Reis, Matheus M. S.
Takimi, Antonio
Griza, Sandro
Bergmann, Carlos P.
Influence of Pre-Milling of Cr(3)C(2)-25 NiCr Spray Powder on the Fatigue Life of HVOF-Sprayed Coating on ASTM A516 Steel Substrate
title Influence of Pre-Milling of Cr(3)C(2)-25 NiCr Spray Powder on the Fatigue Life of HVOF-Sprayed Coating on ASTM A516 Steel Substrate
title_full Influence of Pre-Milling of Cr(3)C(2)-25 NiCr Spray Powder on the Fatigue Life of HVOF-Sprayed Coating on ASTM A516 Steel Substrate
title_fullStr Influence of Pre-Milling of Cr(3)C(2)-25 NiCr Spray Powder on the Fatigue Life of HVOF-Sprayed Coating on ASTM A516 Steel Substrate
title_full_unstemmed Influence of Pre-Milling of Cr(3)C(2)-25 NiCr Spray Powder on the Fatigue Life of HVOF-Sprayed Coating on ASTM A516 Steel Substrate
title_short Influence of Pre-Milling of Cr(3)C(2)-25 NiCr Spray Powder on the Fatigue Life of HVOF-Sprayed Coating on ASTM A516 Steel Substrate
title_sort influence of pre-milling of cr(3)c(2)-25 nicr spray powder on the fatigue life of hvof-sprayed coating on astm a516 steel substrate
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9961330/
https://www.ncbi.nlm.nih.gov/pubmed/36837223
http://dx.doi.org/10.3390/ma16041593
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