File : pdf, 7.3 MB, 118 pages

TOC

WORKSHOP SUMMARY
Purpose
WORKSHOP AGENDA
PRESENTATIONS
Introductory Presentations
Workshop Presentations
DISCUSSION
CONCLUSIONS
ATTENDANCE LIST
Industry
Academia

PRESENTATION SLIDES

NIST Ceramic Coatings Program
Process Diagnostics
- Diagnostic and Control Sensors for Spray Systems
- Holography of droplets and particles
- Need for Diagnostics, Sensors and Modeling in Thermal Spray
- Diagnostics, Sensing, and Modeling for Plasma Spray
Spectroscopy Measurements
- EMISSION SPECTRA
Thermal Imaging
- Temperature Monitoring is Critical to Process Control
- Why Two-Wavelength Imaging Measurements
- SURFACE Imaging Pyrometer System
- PARTICLE Imaging Pyrometer System
- Particle Measurements
Numerical Simulation of Underexpanded Jets
Process Control
Sensors and Controls for Thermal Spray Process
- Introduction
- Sensing Techniques (Processes and Materials)
- zone 1: Heat Generation
- zone 2: Particle Heating and Acceleration
- zone 3: Coating Built-up
- Control Strategies
Measurement of DC Plasma Arc Fluctuations
Enthalpy Probe
- Introduction : Diagnostic Needs of Plasma Spraying
- Basic Concepts of Enthalpy Probe Techniques
- Entalphy Probe Measurements : DC Plasma Jets
Impact and Solidification of Molten Nickel Droplets
- Experiment Schematic
- Superheated Ni splat

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