Nanostructured Bearing Alloy Studies.

Abstract

Work prior to this reporting period focused on achieving a more inert atmosphere for handling and consolidation of the nano-scaled steel powders. As a result, oxygen content in the nano steel powder compacts has been decreased significantly. However, even the decreased level (3% to 5%) is still too high. Further, high carbon levels (6% to 10%) which originate from the chemical synthesis of the powder, were also observed in the powder compacts. Treatment of the nano-scaled powder in a hydrogen retort would reduce the carbon and oxygen contents. Therefore, a study the effects of hydrogen treatment temperature on the interstitial contents was conducted during this reporting period. Several batches of nano-scaled powders produced by sonication reactions were hydrogen treated using the selected temperature and then consolidated in the vacuum hot press.

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Document Details

Document Type
Technical Report
Publication Date
Apr 27, 1995
Accession Number
ADA299788

Entities

People

  • Kenneth E. Gonsalves

Organizations

  • University of Connecticut

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Chemical Compounds
  • Chemical Synthesis
  • Chemistry
  • Controlled Atmospheres
  • Diffraction Analysis
  • Grain Growth
  • Grain Size
  • Heat Treatment
  • Hydrogen
  • Materials
  • Materials Science
  • Metallurgy
  • Military Research
  • Phase
  • Physical Metallurgy
  • Steel
  • X Rays

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Nanocomposite Materials Science
  • Rocket Propulsion.

Technology Areas

  • Microelectronics