Elevated temperature wear behavior of thermally sprayed WC-Co/nanodiamond composite coatings

Andy Nieto, Jaekang Kim, Oleksiy V. Penkov, Dae Eun Kim, Julie M. Schoenung

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

This study investigates the effects of nanodiamonds (ND) on the wear behavior of WC-Co coatings during dry sliding under ambient and elevated temperature environments. The nanometric dimensions and exceptional hardness of ND are envisioned to enhance hardness while maintaining toughness, thereby enhancing wear resistance. ND reinforced WC-Co coatings were successfully fabricated by high velocity oxygen fuel spray (HVOF) and air plasma spraying (APS). The tribological behavior of WC-Co-ND composite coatings was evaluated at room temperature and at 300 °C using reciprocating dry sliding wear tests. At room temperature, the addition of ND led to an enhancement in wear resistance of 8.5% and 13% in HVOF and APS coatings, respectively. The composite coatings exhibited increased formation of a protective silica tribolayer, which was attributed to enhanced heat transfer induced by the excellent thermal conductivity of diamond. At 300 °C, however, the composite coatings exhibited poorer wear resistance than the counterpart WC-Co coatings as a result of the degradation of the ND phase. The loss of the diamond phase was believed to decrease hardness and weaken splat interfaces, which led to more facile delamination in HVOF coatings, as well as severe brittle wear and fracture in APS coatings.

Original languageEnglish
Pages (from-to)283-293
Number of pages11
JournalSurface and Coatings Technology
Volume315
DOIs
Publication statusPublished - 2017 Apr 15

Fingerprint

Nanodiamonds
Composite coatings
Wear of materials
coatings
Coatings
composite materials
Plasma spraying
fuel sprays
Wear resistance
Diamond
plasma spraying
Hardness
Oxygen
wear resistance
Temperature
temperature
Diamonds
hardness
Air
sliding

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Nieto, Andy ; Kim, Jaekang ; Penkov, Oleksiy V. ; Kim, Dae Eun ; Schoenung, Julie M. / Elevated temperature wear behavior of thermally sprayed WC-Co/nanodiamond composite coatings. In: Surface and Coatings Technology. 2017 ; Vol. 315. pp. 283-293.
@article{6f16694ac65e401c940d1c9437e1c1c7,
title = "Elevated temperature wear behavior of thermally sprayed WC-Co/nanodiamond composite coatings",
abstract = "This study investigates the effects of nanodiamonds (ND) on the wear behavior of WC-Co coatings during dry sliding under ambient and elevated temperature environments. The nanometric dimensions and exceptional hardness of ND are envisioned to enhance hardness while maintaining toughness, thereby enhancing wear resistance. ND reinforced WC-Co coatings were successfully fabricated by high velocity oxygen fuel spray (HVOF) and air plasma spraying (APS). The tribological behavior of WC-Co-ND composite coatings was evaluated at room temperature and at 300 °C using reciprocating dry sliding wear tests. At room temperature, the addition of ND led to an enhancement in wear resistance of 8.5{\%} and 13{\%} in HVOF and APS coatings, respectively. The composite coatings exhibited increased formation of a protective silica tribolayer, which was attributed to enhanced heat transfer induced by the excellent thermal conductivity of diamond. At 300 °C, however, the composite coatings exhibited poorer wear resistance than the counterpart WC-Co coatings as a result of the degradation of the ND phase. The loss of the diamond phase was believed to decrease hardness and weaken splat interfaces, which led to more facile delamination in HVOF coatings, as well as severe brittle wear and fracture in APS coatings.",
author = "Andy Nieto and Jaekang Kim and Penkov, {Oleksiy V.} and Kim, {Dae Eun} and Schoenung, {Julie M.}",
year = "2017",
month = "4",
day = "15",
doi = "10.1016/j.surfcoat.2017.02.048",
language = "English",
volume = "315",
pages = "283--293",
journal = "Surface and Coatings Technology",
issn = "0257-8972",
publisher = "Elsevier",

}

Elevated temperature wear behavior of thermally sprayed WC-Co/nanodiamond composite coatings. / Nieto, Andy; Kim, Jaekang; Penkov, Oleksiy V.; Kim, Dae Eun; Schoenung, Julie M.

In: Surface and Coatings Technology, Vol. 315, 15.04.2017, p. 283-293.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Elevated temperature wear behavior of thermally sprayed WC-Co/nanodiamond composite coatings

AU - Nieto, Andy

AU - Kim, Jaekang

AU - Penkov, Oleksiy V.

AU - Kim, Dae Eun

AU - Schoenung, Julie M.

PY - 2017/4/15

Y1 - 2017/4/15

N2 - This study investigates the effects of nanodiamonds (ND) on the wear behavior of WC-Co coatings during dry sliding under ambient and elevated temperature environments. The nanometric dimensions and exceptional hardness of ND are envisioned to enhance hardness while maintaining toughness, thereby enhancing wear resistance. ND reinforced WC-Co coatings were successfully fabricated by high velocity oxygen fuel spray (HVOF) and air plasma spraying (APS). The tribological behavior of WC-Co-ND composite coatings was evaluated at room temperature and at 300 °C using reciprocating dry sliding wear tests. At room temperature, the addition of ND led to an enhancement in wear resistance of 8.5% and 13% in HVOF and APS coatings, respectively. The composite coatings exhibited increased formation of a protective silica tribolayer, which was attributed to enhanced heat transfer induced by the excellent thermal conductivity of diamond. At 300 °C, however, the composite coatings exhibited poorer wear resistance than the counterpart WC-Co coatings as a result of the degradation of the ND phase. The loss of the diamond phase was believed to decrease hardness and weaken splat interfaces, which led to more facile delamination in HVOF coatings, as well as severe brittle wear and fracture in APS coatings.

AB - This study investigates the effects of nanodiamonds (ND) on the wear behavior of WC-Co coatings during dry sliding under ambient and elevated temperature environments. The nanometric dimensions and exceptional hardness of ND are envisioned to enhance hardness while maintaining toughness, thereby enhancing wear resistance. ND reinforced WC-Co coatings were successfully fabricated by high velocity oxygen fuel spray (HVOF) and air plasma spraying (APS). The tribological behavior of WC-Co-ND composite coatings was evaluated at room temperature and at 300 °C using reciprocating dry sliding wear tests. At room temperature, the addition of ND led to an enhancement in wear resistance of 8.5% and 13% in HVOF and APS coatings, respectively. The composite coatings exhibited increased formation of a protective silica tribolayer, which was attributed to enhanced heat transfer induced by the excellent thermal conductivity of diamond. At 300 °C, however, the composite coatings exhibited poorer wear resistance than the counterpart WC-Co coatings as a result of the degradation of the ND phase. The loss of the diamond phase was believed to decrease hardness and weaken splat interfaces, which led to more facile delamination in HVOF coatings, as well as severe brittle wear and fracture in APS coatings.

UR - http://www.scopus.com/inward/record.url?scp=85013683234&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85013683234&partnerID=8YFLogxK

U2 - 10.1016/j.surfcoat.2017.02.048

DO - 10.1016/j.surfcoat.2017.02.048

M3 - Article

AN - SCOPUS:85013683234

VL - 315

SP - 283

EP - 293

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

SN - 0257-8972

ER -