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

Book Id: WPLBN0000697850
Format Type: PDF eBook:
File Size: 7.53 MB
Reproduction Date: 2005

Title:	Thermal Spray Coatings Workshop : Sensors, Modeling and Control Strategies Summary of a Workshop Held at National Institute of Standards and Technology
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Language:	English
Subject:	Technology., Reference materials, Technology and literature
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Citation APA MLA Chicago Thermal Spray Coatings Workshop : Sensors, Modeling and Control Strategies Summary of a Workshop Held at National Institute of Standards and Technology. (n.d.). Thermal Spray Coatings Workshop : Sensors, Modeling and Control Strategies Summary of a Workshop Held at National Institute of Standards and Technology. Retrieved from http://gutenberg.cc/

Description
Technical Reference Publication

Excerpt
Summary: The NIST Metallurgy Division has initiated a research program to investigate coatings produced by thermal spray (TS) 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 TS coated part. Currently TS coatings are produced 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.

Table of Contents
TABLE OF CONTENTS TABLE OF CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i DISCLAIMER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii WORKSHOP SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 WORKSHOP AGENDA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 PRESENTATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Introductory Presentations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Workshop Presentations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 DISCUSSION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 CONCLUSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 ATTENDANCE LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Industry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Academia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 National Labs (non NIST) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 NIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 PRESENTATION SLIDES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 NIST Ceramic Coatings Program S. J. Dapkunas (NIST) . . . . . . . . . . . . . . . 13 Process Diagnostics S. D. Ridder (NIST) . . . . . . . . . . . . . . . . 23 Spectroscopy Measurements D. W. Bonnell (NIST) . . . . . . . . . . . . . . . 29 Thermal Imaging J. E. Craig (Stratonics) . . . . . . . . . . . . . . . 39 Numerical Simulation of Underexpanded Jets A. Johnson (NIST) . . . . . . . . . . . . . . . . . 47 Process Control S. A. Osella (ICT) . . . . . . . . . . . . . . . . . 53 Sensors and Controls for Thermal Spray: Is there a need? C. C. Berndt (SUNY Stony Brook) . . . . . . . . 59 Currently used Sensors C. Moreau (NRC-CNRC) . . . . . . . . . . . . . 65 Measurement of DC Plasma Arc Fluctuations J. Heberlein (U. of Minnesota) . . . . . . . . . . 83 Enthalpy Probe M. Boulos (U. of Sherbrooke) . . . . . . . . . . . 87 Impact and Solidification of Molten Nickel Droplets W. H. Hofmeister (Vanderbilt U.) . . . . . . . . 99 NIST THERMAL SPRAY RESEARCH PROGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109