|About this Abstract
||2010 TMS Annual Meeting & Exhibition
||Processing Materials for Properties
||Accounting for High Temperature Measurements with Changing Effective Emissivity in PTAW Processing
||Tonya Wolfe, Hani Henein
|On-Site Speaker (Planned)
High temperature measurements of PTAW (plasma transferred arc welding) coatings deposited in-situ are required in order to optimize the process. There is wide interest in obtaining high temperature measurements for other high temperature processes using infrared thermography. However, the reliability of the quantitative data is often in question. Changes in emissivity with temperature, surface condition and phase change challenge the credibility of infrared results. In this paper, the methodology developed and applied to PTAW in order to generate reliable temperature measurements of the surface of the deposit upon cooling after the arc is extinguished, will be described. The methodology applies the coupled use of differential scanning calorimetry, laser reflectance pyrometry, infrared thermography and mathematical modeling.
||Definite: A CD-only volume