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Thermal Spray Coatings Workshop: Sensors, Modeling, and Control Strategies. Summary of a Workshop Held at National Institute of Standards and Technology

Published

Author(s)

Frank S. Biancaniello, Stephen D. Ridder

Abstract

The NIST Metallurgy Division has initiated a research program to investigate coatings produced by thermal spray techniques. The focus of this research is the development of measurement tools that will aid in the understanding and/or control of the plasma spray process. This process uses plasma jets (generated by either DC or AC arcs) to melt or soften coating feed-stocks and then propel this material onto various substrates. The geometry and operating parameters of the plasma jet hardware, or gun, depend on the intended function of the resulting coated part. Current use involves application by skilled technicians, however, it is now being adapted for automatic control using robotics. Intelligent Processing incorporating expert systems will probably be employed in most advanced systems. This move to robotics is not only to reduce costs, but to improve the reliability of spray coatings and thus enable the use of coatings in high volume applications such as automotive components and property critical devices such as the proposed high-efficiency gas turbines. Recently a number of advances have been made in new measurement systems, sensors, and modeling techniques that can lead to improved design and control of thermal spray processes. The objectives of this workshop were to present descriptions of some of these advances and their industrial applications, demonstrate some of the systems currently available or under development at NIST, and provide a forum to allow discussion of the current industrial measurement needs for thermal spray coatings.
Citation
NIST Interagency/Internal Report (NISTIR) - 6460
Report Number
6460

Keywords

ceramic coatings, metallic coatings, process control, process diagnostics, process modeling, process sensors, thermal imaging, thermal spray

Citation

Biancaniello, F. and Ridder, S. (1998), Thermal Spray Coatings Workshop: Sensors, Modeling, and Control Strategies. Summary of a Workshop Held at National Institute of Standards and Technology, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=852968 (Accessed April 18, 2024)
Created November 1, 1998, Updated March 6, 2009