Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Development and Application of Very High Temperature Mass Spectrometry: Vapor Pressure Determinations Over Liquid Refractories

Published

Author(s)

John W. Hastie, D W. Bonnell, Peter K. Schenck

Abstract

Existing thermodynamic and vaporization data for liquid refractories are based either on estimates or on data extrapolated from studies on the solids obtained at much lower temperatures. Previously we have shown that pulsed laser heating, coupled with time-dependent mass spectrometry of the free-expansion vapor plume, can be used for semi-quantitative measurements of vaporization thermochemistry. The present work extends this approach with the development of (a) more direct, and more accurate, methods for determining the system temperature and pressure, (b) improved determinations of key parameters such as ionization cross sections, (c) improved characterization of the gas dynamic expansion and thermal equilibration processes.
Citation
Pure and Applied Chemistry
Volume
72
Issue
No. 11

Keywords

Al2O3, C, high temperature, mass spectrometry, SiC, thermochemistry, Y2O3, ZrO2

Citation

Hastie, J. , Bonnell, D. and Schenck, P. (2000), Development and Application of Very High Temperature Mass Spectrometry: Vapor Pressure Determinations Over Liquid Refractories, Pure and Applied Chemistry (Accessed March 2, 2024)
Created November 1, 2000, Updated February 19, 2017