Development of Improved Abradable Compressor Gas Path Seal.

Abstract

A number of fiber metal systems were evaluated by rig testing in comparison with the base line material, FM-521 - a 19% dense, Haynes 188, 8 micron fiber metal - which is the standard production material used for the highest temperature compressor blade tip seals in the P and WA F-100 engine. A range of densities and strengths of alternative materials were evaluated including Haynes 188, FeCrAlY, NiCrAlY, and FeNiCrAlY employing fiber diameters in the range of 8 - 23 microns with fiber aspect ratios in the range of 45 - 80. Rig tests employed were high speed rub testing, cyclic static oxidation, cyclic dynamic oxidation, and hot particulate erosion. These data were supplemented with measurements of mechanical, thermal, and chemical properties. The best material tested was a 20.5% dense FeNiCrAlY fiber metal employing 17 micron fibers. This had at least equivalent abradability and improved oxidation and erosion resistance in comparison with the base line material.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1978
Accession Number
ADA072171

Entities

People

  • A. R. Erickson
  • W. P. Jarvi

Organizations

  • Brunswick Corporation

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Cyber
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Body Weight
  • Chemistry
  • Materials
  • Materials Laboratories
  • Materials Science
  • Materials Testing
  • Measurement
  • Mechanical Properties
  • Mechanical Working
  • Plastic Explosives
  • Tensile Properties
  • Tensile Strength
  • Tensile Testing
  • Test And Evaluation
  • Test Equipment
  • Turbines
  • Yield Strength

Readers

  • Aerodynamics.
  • Metallurgy
  • Surface Engineering/Surface Coating Technology.