Method of producing protective coatings with chemical compositio

Details Method of producing protective coatings with chemical compositio Method of producing protective coatings with chemical compositio

1997-04-03

1998-11-10

King, Roy V.

Coating processes

Direct application of electrical, magnetic, wave, or...

Pretreatment of coating supply or source outside of primary...

427567, 4271261, 4271262, 4271263, B05D 306

Patent

active

058340700

ABSTRACT:
The invention relates to the production of protective coatings for parts of gas turbines and internal combustion engines which are to be subjected to thermal loading. A coating formed in accordance with the invention has a chemical composition and structure gradient across its thickness and an outer ceramic layer. The coating is obtained by electron beam heating of a mixture of metals (alloys) and oxides which have different vapor pressures at the evaporation temperature, the mixture and an underlying ceramic ingot being serially evaporated and subsequently condensed on the part to be coated.

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G.C. Riddle, "Evaporated Cermet Materials", IEEE Transactions on Parts Materials and Packaging, vol. 3, No. 4, Dec. 1967, pp. 154-161.
R.V. Lang et al, "Development of Compositionally Graded Thermal Barrier Coating Using Ion Assisted Electron Beam Co-Evaporation", 3rd International SAMPE Metals Conference, Oct. 20-22, 1992, pp. 266-277.

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