Evaluation of Lead Finishes for Microcircuit Packages

Abstract

Oxidation studies made on several vendor Fe-Ni-Co (ASTM-F15) glass sealing alloys show these alloys to differ in both rate of oxidation and adherence of the oxide to the metal. Differences in surface preparation, surface roughness, and atmosphere control on rate and adherence were shown to affect both rate of oxidation and adherence. Using the curves established in these rate studies, samples were oxidized to predetermined thickness. Those selectively oxidized samples were 'sealed' with commercial glasses. Adherence of the glass to metal is shown to be related to oxide thickness and the energy input used in sealing.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1975
Accession Number
ADA015723

Entities

People

  • G. Schaefer
  • L. Zakraysek
  • R. Ward

Organizations

  • General Electric

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Adhesion
  • Chemistry
  • Corporations
  • Corrosion Resistance
  • Dew Point
  • Electronics Industry
  • Environmental Exposure
  • Finishes
  • Grain Size
  • Humidity
  • Materials
  • Metal Oxides
  • Surface Finishing
  • Surface Properties
  • Surface Roughness
  • Surface Tension
  • Test Methods

Readers

  • Regression Analysis.
  • Surface Coatings Technology.
  • Surface Engineering/Surface Coating Technology.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene