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Effects of tic Nanostructured Overlays on D2 Steels by PTA

  • L. Santiago-Bautista (a1), H. M. Hdz-García (a1), M. Alvarez-Vera (a1), R. Muñoz-Arroyo (a1), J. L. Acevedo-Dávila (a1), F. J. Vázquez-García (a2) and J. Jorge Ruiz Mondragon (a1)...
Abstract

Two metal fillers with TiC nanoparticles (TiC NPs) of less than 100 nm for the overlay process is an alternative to hardfacing for treating surfaces subjected to severe wear. In this work, the effect of tribological behavior for TiC NPs addition on two Co-based filler materials, as well as the dilutions, was studied. Mixtures of Co-based filler metals without and with 0.5% and 2% TiC NPs were deposited onto D2 steel plates using PTA (Plasma Transferred Arc). The BET surface area was 0.17 m2 g-1 and 0.31 m2 g-1, respectively, for Stellite 6 and 12. The distribution of ca 23% macroporous for Stellite 6 was sufficient to get inside the TiC NPs, as well as in the case of Stellite 12, with a pore distribution of ca 13%. Stellite 12 has an increase in the dilutions (70%) and enthalpies showed endothermic reactions. Stellite 6 with NPs was determined to be most effective in increasing the wear resistance.

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*(Email: lsantiago@alumnos-comimsa.mx)
References
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MRS Advances
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  • EISSN: 2059-8521
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