INVESTIGATION OF CAVITATION EROSION RESISTANCE OF METALLIC AND NON-METALLIC MATERIALS AND POLYMERIC COATINGS USING A ROTATING DISK APPARATUS.

Abstract

A series of metallic and plastic disks and coated metal disks were tested to determine their resistance to cavitation erosion by means of a rotating disk apparatus. A considerable variation in erosion resistance was observed, manganese nickel and nickel aluminum bronzes showing the highest resistance among the metals. Aluminum 1100-0 and most of the plastics showed the poorest resistance while a neoprene coating exhibited the highest erosion resistance of all the materials tested. Erosion damage increased exponentially with increase in velocity of the cavitational sources (holes) in the disk. The threshold velocity (below which no measurable damage was obtained) decreased with increase in test time. The degree of adhesion of the coatings to the metallic substrate was a vital factor in determining the erosion protection afforded by the coatings. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1958
Accession Number
AD0659186

Entities

People

  • J. Z. Lichtman

Tags

DTIC Thesaurus Topics

  • Aluminum
  • Cavitation
  • Coatings
  • Erosion
  • Erosion Resistance
  • Films
  • Materials
  • Metals
  • Plastics
  • Resistance

Readers

  • Structural Health Monitoring of Composite Structures.
  • Thin Film Deposition Science.
  • ballistics.