Synthesis and Characterization of Aluminum-Nanodiamond Composite Powders by High Energy Ball Milling

Abstract

High-energy ball milling was studied for the ex situ strengthening of aluminum (Al) with nanodiamond (ND). Al-ND metal matrix composite powders with 5 wt% and 10 wt% nanodiamond were synthesized by high-energy ball milling of the blended component powders. Stearic acid was used as a process control agent to minimize agglomeration of the powders upon milling. A uniform distribution of the ND reinforcement was successfully obtained after milling the powders for a period of ten hours with a ball-to-powder ratio of 30:1 in a SPEX 8000M ball mill. Composition and properties of the Al-ND composite was studied using energy dispersive spectrometry (EDS) mapping, scanning electron microscopy (SEM), X-ray diffraction (XRD), optical microscopy, and nanoindentation techniques

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2011
Accession Number
ADA556699

Entities

People

  • Brian D. Sneed

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Advanced Electronics
  • Biomedical
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Composite Materials
  • Diffraction
  • Electron Microscopy
  • Materials
  • Materials Engineering
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Metal Matrix Composites
  • Modulus Of Elasticity
  • Nanocomposites
  • X Rays
  • Yield Strength

Fields of Study

  • Materials science

Readers

  • Powder metallurgy of Titanium alloys.

Technology Areas

  • Microelectronics