Measuring and testing – Volume or rate of flow – Using differential pressure
Patent
1995-06-07
2000-10-24
Williams, Hezron
Measuring and testing
Volume or rate of flow
Using differential pressure
428629, G01F 146, C25D 1102
Patent
active
061349720
ABSTRACT:
A method for applying a chromium surface treatment to nickel-based air data sensors to improve the corrosion resistance properties of the components while retaining thermal conductivity in order to efficiently transfer internally generated heat to the exterior of the component during anti-icing or deicing procedures is provided. The method for applying a chromium surface treatment to nickel-based air data sensors includes the steps of: (a) ion plating a nickel-based substrate with chromium atoms using a physical vapor deposition process; (b) interdiffusing the chromium and the nickel atoms at the surface region by means of a first thermal treatment carried out in an inert environment; and (c) oxidizing the chromium atoms at the surface region to create a chromium oxide layer during a second thermal treatment performed in an oxygen-containing environment.
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Streckert Holger H.
Trester Paul W.
Politzer Jay L.
Rosemount Aerospace Inc.
Williams Hezron
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