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Joining of Metallic Grains by Thermal Oxidation

  • Teodor Werber
Part of the NATO ASI Series book series (ASIC, volume 276)

Abstract

The subject of this work is the mechanism of formation of intergranular oxide joints (IJ) in uncompact-ed nickel and iron powder layers oxidized in air at 400 – 800°C. Four kinds of nickel powders of different size and morphology of grains and one iron powder were investigated. The strength of IJ depends on the size of contact area formed between oxide layers of adjacent grains. It is a function of time and temperature of oxidation and the size, shape and morphology of the grains. On the interface between both contacting oxide layers is formed a grain-boundary-like zone, which is responsible for the cohesion in the IJ.

Keywords

Contact Area Oxide Layer Thermal Oxidation Iron Powder Metallic Powder 
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References

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    T. Werber, Materials Science and Engineering, 88, 283 (1987).CrossRefGoogle Scholar

Copyright information

© Kluwer Academic Publishers 1989

Authors and Affiliations

  • Teodor Werber
    • 1
  1. 1.Dept. of Materials EngineeringTechnionHaifaIsrael

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