Share Email Print

Proceedings Paper

Extraction of properties of condensed outgassed species by thermogravimetric analysis
Author(s): Terry R. Simpson; David F. Hall; Gidget K. Ternet
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

This paper describes progress in the development of a new contamination prediction code, The Aerospace Satellite Contamination Model Evaluator (ASCME). This paper provides fitted parameters for Langmuire evaporation models of contaminants from 15 materials based upon kinetic testing according to the ASTM E1559-93 procedure. It is shown that the evaporation rate parameters, p1 and p2, derived from the E1559 TGA testing do not always agree with corresponding parameters calculated from published vapor pressure data. The uncertainty in extracting p1 and p2 parameters due to experimental scatter is estimated to be about ±5.6% and ±4%, respectively. It is demonstrated that m desorption profiles can vary significantly, depending upon the originating source material. It is shown that evaporation rate parameters depend strongly on the test method, static vs. kinetic.

Paper Details

Date Published: 11 September 2002
PDF: 10 pages
Proc. SPIE 4774, Optical System Contamination: Effects, Measurements, and Control VII, (11 September 2002);
Show Author Affiliations
Terry R. Simpson, The Aerospace Corp. (United States)
David F. Hall, The Aerospace Corp. (United States)
Gidget K. Ternet, The Aerospace Corp. (United States)

Published in SPIE Proceedings Vol. 4774:
Optical System Contamination: Effects, Measurements, and Control VII
Philip T. C. Chen; O. Manuel Uy, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?