Accession Number:

ADA038509

Title:

Development and Evaluation of Processes for Deposition of Ni/Co-Cr-AlY (MCrAlY) Coatings for Gas Turbine Components.

Descriptive Note:

Final rept.

Corporate Author:

GENERAL MOTORS CORP INDIANAPOLIS IND DETROIT DIESEL ALLISON DIV

Personal Author(s):

Report Date:

1977-01-01

Pagination or Media Count:

75.0

Abstract:

The feasibility of producing an MCrAlY type overlay coating structure by electrophoretic AEP deposition was demonstrated. A NiCrAlY coating was produced on directionally solidified Mar M006 by AEP deposition of chemically activated NiCrY powder with subsequent cold isostatic pressing and aluminizing treatments. The NiCrAlY coating microstructure consisted essentially of chromium rich particles in a Ni-Cr-Al matrix and minimal interdiffusion with the base metal. The structure contained scattered porosity. Cold isostatic pressing was introduce near the end of the Task I effort. The AEP NiCrAlY process feasibility was demonstrated.

Subject Categories:

  • Coatings, Colorants and Finishes
  • Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE