TGO
TGO turns up in 2 fields: thermal spray, aviation. Here is what it means to the people in each one.
TGO in thermal spray
Thermally grown oxide: the alumina layer that grows between bond coat and ceramic in hot service.
Thermally grown oxide, a thin layer of mostly aluminum oxide that forms on the bond coat under a thermal barrier as oxygen diffuses through the ceramic. A slow-growing, pure alumina TGO protects the bond coat, but as it thickens over service and mixed oxides appear, stresses at the interface rise until the top coat spalls. TGO thickness is a standard measurement when assessing used hot-section parts.
"TGO is up around 8 microns on the trailing edge, that blade's near the end of its coating life."
TGO in aviation
Trace Gas Orbiter is a spacecraft designed to analyze the Martian atmosphere.
Trace Gas Orbiter is an atmospheric research satellite sent to Mars as part of the ExoMars program. It maps the atmospheric composition of the planet, searching specifically for methane and other trace gases that could indicate active biological or geological processes. It also serves as a communication relay for surface rovers.
"TGO relayed the telemetry from the rover down to the deep space network."