ANTI-OXIDATION COATING FOR TUNGSTEN-RHENIUM THERMOCOUPLE WITH HIGH THERMAL SHOCK RESISTANCE AND APPLICATION THEREOF

摘要

Disclosed is an anti-oxidation coating for a tungsten-rhenium thermocouple. The anti-oxidation coating structure includes a transition layer and an oxygen barrier layer on a surface of the transition layer. The material of the transition layer has a coefficient of thermal expansion between that of the material of a tungsten-rhenium thermocouple base body and the material selected for the oxygen barrier layer. The oxygen barrier layer includes a toughened second-phase material. Also disclosed is an application of the anti-oxidation coating.