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Resistance Heating of the Gasket in a Gem-Anvil High Pressure Cell

Published

Author(s)

N M. Balzaretti, E J. Gonzalez, Gasper J. Piermarini, T Russell

Abstract

The design and fabrication of a modified gem-anvil high pressure cell capable of statically heating gasketed samples to temperatures in the range of 1100 degrees C at pressures up to 4.0 Gpa is described. The high temperatures were achieved by resistance heating of the gasket which is incorporated in a thin metallic strip. The shape of the metallic strip was specially designed to concentrate high electrical resistance in the region of the gasket hole, thus providing optimum sample heating under pressure. The heating capabilities as well as mechanical and chemical stability of several different metals (Inconel 600 and X750 alloys, Ta, Pt/Rh and a Mo/Re alloy) with different design shapes, and two different single crystal anvil materials (diamond and cubic zirconia) were investigated. The gasket heating method was used to compact nanosize amorphous silicon nitride and γ-alumina powders at high temperatures and high pressures.
Citation
Review of Scientific Instruments

Keywords

alumina, cubic zirconia, diamond cell, high pressure, high temperature, hot pressing, nanopowders

Citation

Balzaretti, N. , Gonzalez, E. , Piermarini, G. and Russell, T. (2021), Resistance Heating of the Gasket in a Gem-Anvil High Pressure Cell, Review of Scientific Instruments (Accessed April 22, 2024)
Created October 12, 2021