Research on Coatings or Surface Treatment of Metal Powders

Abstract

This report describes the research performed under the above contract. The objective of the contract was to assess several techniques utilizing surface treatments or coatings on micron sized metal powders to overcome their agglomerating properties. Under the contract, several techniques including surface treatments, polymer coating and additions of flow agents were investigated. Special efforts including, a literature review and experimental adhesion force measurements were directed towards understanding the forces holding the particles. Treatments were evaluated by the measurement of interparticle adhesion forces, tensile strength of powders and release characteristics of the powders in vacuum. A treatment with steam appears to give the best flowing and dispersion characterisitics to the powder in air and a . 0001 vacuum. The steam treated powder also showed a low tensile strength and a low interparticle force of attraction.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1976
Accession Number
ADA036870

Entities

People

  • Anil Goyal
  • Madhav B. Ranade

Organizations

  • IIT Research Institute

Tags

Communities of Interest

  • Advanced Electronics
  • Weapons Technologies

DTIC Thesaurus Topics

  • Alkenes
  • Chemistry
  • Coatings
  • Dielectric Polymers
  • Fatty Acids
  • Fluids
  • Hydroxides
  • Materials
  • Mechanical Properties
  • Particle Size
  • Polymeric Films
  • Polymers
  • Powder Metals
  • Stearic Acid
  • Surface Finishing
  • Tensile Strength
  • Van Der Waals Forces

Fields of Study

  • Materials science

Readers

  • Aerosol Science/Aerosol Physics
  • Surface Coatings Technology.
  • Technical Research and Report Writing.