Journal of Thermal Spray Technology

, Volume 25, Issue 1–2, pp 28–35 | Cite as

Development of Processing Windows for HVOF Carbide-Based Coatings

  • Andrew Siao Ming Ang
  • Hugo Howse
  • Scott A. Wade
  • Christopher C. Berndt
Peer Reviewed

Abstract

Optimized processing windows for spraying high-quality metal carbide-based coatings are developed using particle diagnostic technology. The cermet coatings were produced via the high-velocity oxygen fuel (HVOF) spray process and are proposed for service applications such as marine hydraulics. The traditional “trial and error” method for developing coating process parameters is not technically robust, as well as being costly and time consuming. Instead, this contribution investigated the use of real-time monitoring of parameters associated with the HVOF flame jets and particles using in-flight particle diagnostics. Subsequently, coatings can be produced with knowledge concerning the molten particle size, temperature, and velocity profile. The analytical results allow identification of optimized coating process windows, which translate to coatings of lower porosity and improved mechanical performance.

Keywords

carbide cermet coatings diagnostic techniques hardness HVOF nickel-based porosity thermal spray coatings 

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Copyright information

© ASM International 2015

Authors and Affiliations

  • Andrew Siao Ming Ang
    • 1
    • 2
  • Hugo Howse
    • 3
  • Scott A. Wade
    • 1
    • 2
  • Christopher C. Berndt
    • 1
    • 2
    • 4
  1. 1.Industrial Research Institute SwinburneSwinburne University of TechnologyHawthornAustralia
  2. 2.Defence Materials Technology CentreHawthornAustralia
  3. 3.United Surface Technologies Pty LtdAltonaAustralia
  4. 4.Department of Materials Science and EngineeringStony Brook UniversityStony BrookUSA

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