Coating qualities deposited using three different thermal spray technologies in relation with temperatures and velocities of spray droplets

Yasuyuki Kawaguchi, Fumihiro Miyazaki, Masafumi Yamasaki, Yukihiko Yamagata, Nozomi Kobayashi, Katsunori Muraoka

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

Three guns based on different thermal spray technologies-namely, gas flame spray, wire arc spray, and wire plasma spray-were operated at each best cost-performance condition, and the resulting spray droplets and deposited coating qualities were investigated. For the former, a simple optical monitoring system was used to measure temperatures and velocities of spray droplets ejected from the guns. On the other hand, for the latter, qualities of coating layers on substrates-namely, surface roughness, atomic composition, hardness, adhesive strength, and porosity-were characterized. Then, these coating qualities were discussed with respect to the measured temperatures and velocities of spray droplets, which revealed novel features in the coatings that have not been seen before, such as atomic composition and hardness strongly dependent on temperature and environments of droplets towards the substrates, and porosity on velocity of droplets impinging onto the substrates.

Original languageEnglish
Article number27
JournalCoatings
Volume7
Issue number2
DOIs
Publication statusPublished - Feb 1 2017

All Science Journal Classification (ASJC) codes

  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

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