Tribological behavior of borided surface on CoCrMo cast alloy

C. A. Cuao-Moreu, E. Hernández-Sanchéz, M. Alvarez-Vera, E. O. Garcia-Sanchez, A. Perez-Unzueta, M. A.L. Hernandez-Rodriguez

Research output: Contribution to journalArticleResearchpeer-review

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Abstract

© 2019 CoCrMo alloys are used in a wide range of applications because of their acceptable fatigue strength and corrosion resistance. However, CoCrMo-based components exhibit a deleterious effect of wear. For this reason, surface modification through ceramic coatings has become in a useful alternative to improve mechanical resistance. The main aim of the present study was to investigate the tribological behavior of a system of diffusional boride layers formed on the substrate of CoCrMo alloy. For this purpose, different boron diffusion heat treatment parameters were performed: 1223, 1248 and 1273 K by 6, 8 and 10 h, respectively. Surfaces were characterized using scanning electron microscopy (SEM), surface roughness measurement, micro-hardness testing, and X-ray diffraction. The tribological response was studied by means of ball on disc tribometer under dry-sliding conditions tracking their friction coefficient, mass loss, wear rate and surface damage by stereoscopy and SEM. Boride coating at 1223 K by 6 h showed the better wear resistance, increased it 6 times relative to the wear resistance obtained for the CoCr alloy untreated sample.
Original languageAmerican English
JournalWear
DOIs
StatePublished - 1 Jan 2019

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cast alloys
Boron Compounds
borides
wear resistance
Electron Scanning Microscopy
Wear resistance
Boride coatings
stereoscopy
Wear of materials
Hardness testing
Roughness measurement
tribometers
ceramic coatings
Scanning electron microscopy
scanning electron microscopy
Boron
Ceramic coatings
Corrosion
Borides
Friction

Cite this

Cuao-Moreu, C. A., Hernández-Sanchéz, E., Alvarez-Vera, M., Garcia-Sanchez, E. O., Perez-Unzueta, A., & Hernandez-Rodriguez, M. A. L. (2019). Tribological behavior of borided surface on CoCrMo cast alloy. Wear. https://doi.org/10.1016/j.wear.2019.02.006
Cuao-Moreu, C. A. ; Hernández-Sanchéz, E. ; Alvarez-Vera, M. ; Garcia-Sanchez, E. O. ; Perez-Unzueta, A. ; Hernandez-Rodriguez, M. A.L. / Tribological behavior of borided surface on CoCrMo cast alloy. In: Wear. 2019.
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Cuao-Moreu, CA, Hernández-Sanchéz, E, Alvarez-Vera, M, Garcia-Sanchez, EO, Perez-Unzueta, A & Hernandez-Rodriguez, MAL 2019, 'Tribological behavior of borided surface on CoCrMo cast alloy', Wear. https://doi.org/10.1016/j.wear.2019.02.006

Tribological behavior of borided surface on CoCrMo cast alloy. / Cuao-Moreu, C. A.; Hernández-Sanchéz, E.; Alvarez-Vera, M.; Garcia-Sanchez, E. O.; Perez-Unzueta, A.; Hernandez-Rodriguez, M. A.L.

In: Wear, 01.01.2019.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Hernández-Sanchéz, E.

AU - Alvarez-Vera, M.

AU - Garcia-Sanchez, E. O.

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AU - Hernandez-Rodriguez, M. A.L.

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N2 - © 2019 CoCrMo alloys are used in a wide range of applications because of their acceptable fatigue strength and corrosion resistance. However, CoCrMo-based components exhibit a deleterious effect of wear. For this reason, surface modification through ceramic coatings has become in a useful alternative to improve mechanical resistance. The main aim of the present study was to investigate the tribological behavior of a system of diffusional boride layers formed on the substrate of CoCrMo alloy. For this purpose, different boron diffusion heat treatment parameters were performed: 1223, 1248 and 1273 K by 6, 8 and 10 h, respectively. Surfaces were characterized using scanning electron microscopy (SEM), surface roughness measurement, micro-hardness testing, and X-ray diffraction. The tribological response was studied by means of ball on disc tribometer under dry-sliding conditions tracking their friction coefficient, mass loss, wear rate and surface damage by stereoscopy and SEM. Boride coating at 1223 K by 6 h showed the better wear resistance, increased it 6 times relative to the wear resistance obtained for the CoCr alloy untreated sample.

AB - © 2019 CoCrMo alloys are used in a wide range of applications because of their acceptable fatigue strength and corrosion resistance. However, CoCrMo-based components exhibit a deleterious effect of wear. For this reason, surface modification through ceramic coatings has become in a useful alternative to improve mechanical resistance. The main aim of the present study was to investigate the tribological behavior of a system of diffusional boride layers formed on the substrate of CoCrMo alloy. For this purpose, different boron diffusion heat treatment parameters were performed: 1223, 1248 and 1273 K by 6, 8 and 10 h, respectively. Surfaces were characterized using scanning electron microscopy (SEM), surface roughness measurement, micro-hardness testing, and X-ray diffraction. The tribological response was studied by means of ball on disc tribometer under dry-sliding conditions tracking their friction coefficient, mass loss, wear rate and surface damage by stereoscopy and SEM. Boride coating at 1223 K by 6 h showed the better wear resistance, increased it 6 times relative to the wear resistance obtained for the CoCr alloy untreated sample.

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Cuao-Moreu CA, Hernández-Sanchéz E, Alvarez-Vera M, Garcia-Sanchez EO, Perez-Unzueta A, Hernandez-Rodriguez MAL. Tribological behavior of borided surface on CoCrMo cast alloy. Wear. 2019 Jan 1. https://doi.org/10.1016/j.wear.2019.02.006