Protective Coatings of W–Re Thermocouples for Use in Aggressive Environments

A method for growing a hafnium oxide (HfO 2 ) protective coating on the surface of a tungsten-rhenium (W–Re) thermocouple is described, the structural and morphological properties and chemical composition of the coating are studied, and temperature tests of the thermocouples with a protective coatin...

Full description

Saved in:
Bibliographic Details
Published in:Surface investigation, x-ray, synchrotron and neutron techniques x-ray, synchrotron and neutron techniques, 2023-10, Vol.17 (5), p.1074-1077
Main Authors: Kirichuk, G. V., Kozlov, A. A., Prokopovich, P. A., Goikhman, A. Yu, Maksimova, K. Yu
Format: Article
Language:English
Subjects:
Chemical composition
Chemistry and Materials Science
Hafnium oxide
High temperature
Materials Science
Oxidation resistance
Protective coatings
Rhenium
Surfaces and Interfaces
Thermocouples
Thin Films
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A method for growing a hafnium oxide (HfO 2 ) protective coating on the surface of a tungsten-rhenium (W–Re) thermocouple is described, the structural and morphological properties and chemical composition of the coating are studied, and temperature tests of the thermocouples with a protective coating are carried out. The optimal conditions for the formation of coatings resistant to oxidation and high temperatures (above 2000°C) are found. The tests confirm the ability of the HfO 2 coating to slow down the processes of degradation and destruction of the thermocouple when operating in an aggressive oxidizing environment.
ISSN:1027-4510
1819-7094
DOI:10.1134/S1027451023030060