NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
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.
Re-Measurement of Peritactic Temperature of the Sigma Phase in the Ta-Pd System
Published
Author(s)
Richard M. Waterstrat
Abstract
The anomalously high peritectic temperature reported for the sigma-phase in the Ta-Pd system together with the liklihood that significant losses of palladium had occured during the measurements has led to a reinvestigation of the peritectic temperature. optical metallography was used to detect liquifaction in homogenous single-phase samples of the sigma phase (Ta3Pd) annealed for short periods of time in small temperature increments. This resulted in a revised peritectic temperature of 2000 + 10 degrees C and a revised Ta-Pd phase diagram.
Waterstrat, R.
(2003),
Re-Measurement of Peritactic Temperature of the Sigma Phase in the Ta-Pd System, Journal of Phase Equilibria
(Accessed November 3, 2025)