A proposed process control chart for DC plasma spraying process

C.B. Ang, H.W. Ng, Ching Man Yu, Y.C. Lam

Research output: Journal article publicationJournal articleAcademic researchpeer-review

16 Citations (Scopus)


A process control chart is proposed for DC plasma spraying process based on the in-flight simulation of the injected states of the particles determined by computational fluid dynamics analysis (via FLUENT V4.3). The chart consists of five regions, i.e., the unmelted, melted, vaporized, escaped, and rebounded, which represent the various states of the particles at impact on the substrate. The X and Y axes of the chart are particle entry conditions, i.e., diameter (ranging from 20 to 100 ?m) and injection velocity (between 10 to 50 m/s), respectively. The regions indicate the fate of the particle on impact. A grid-array of (14 × 11) entry conditions is simulated in developing the chart. The proposed chart is aimed at providing a general guideline for plasma spraying process in achieving a thoroughly melted particle on arrival at the substrate to be coated.
Original languageEnglish
Pages (from-to)325-342
Number of pages18
JournalPlasma Chemistry and Plasma Processing
Issue number3
Publication statusPublished - 1 Jan 2000
Externally publishedYes


  • Injection velocity
  • Numerical modeling
  • Particle size
  • Plasma spraying

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Condensed Matter Physics
  • Surfaces, Coatings and Films


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