Comparison between plasma- and HVOF-sprayed ceramic coatings: Part II: tribological behaviour

G. Bolelli, L. Lusvarghi, T. Manfredini, F. Pighetti Mantini, Erja Turunen, Tommi Varis, Simo-Pekka Hannula

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Abstract

This is the second part of comparative study between High Velocity Oxygen-Fuel (HVOF) flame-sprayed and Atmospheric Plasma-Sprayed (APS) ceramics. Dry particles abrasion test and dry sliding wear test at room temperature, 400°C and 700°C are performed. In dry sliding against SiC, at room temperature stable tribofilms are formed and mild wear (<10-6 mm³/(Nm)) occurs for all coatings. When temperature and normal load increase, making brittle cracking a significant wear mechanism, HVOF coatings become superior to APS ones, thanks to higher toughness. In dry particles abrasion, brittle fracture prevails; therefore, the tougher HVOF coatings outperform APS ones.
Original languageEnglish
Pages (from-to)62-79
JournalInternational Journal of Surface Science and Engineering
Volume1
Issue number1
DOIs
Publication statusPublished - 2007
MoE publication typeA1 Journal article-refereed

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Keywords

  • high velocity oxygen-fuel (HVOF) flame spraying
  • plasma spraying
  • ceramic coatings
  • pin-on-disk wear test
  • dry particles abrasion test
  • ProperPart

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