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Journal of Materials Science

, Volume 29, Issue 12, pp 3224–3230 | Cite as

Characterization of milled Si3N4 powder using X-ray peak broadening and surface area analysis

  • B. Lönnberg
Article

Abstract

Si3N4 powder has been milled using a planetary ball mill. The specific surface area, crystallite size and lattice distortions were studied as a function of milling time using the Brunauer-Emmett-Teller (BET) technique and X-ray powder diffractometry. The crystallite size decreased rapidly during the first 50 h of milling. Above 170 h no further decrease of the crystallite size occurred. The smallest crystallite size obtained was 0.074 μm. Lattice distortions were small and decreased slightly during the first 50 h of milling. Specific surface area increased linearly with time. Rapid wear of the milling parts occurred during the first 50 h. Increasing the milling time produced only minor wear. The oxygen content increased linearly with milling time. Reaction with the milling fluid produced an increase in carbon content.

Keywords

Polymer Milling Carbon Content Crystallite Size Oxygen Content 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • B. Lönnberg
    • 1
  1. 1.Institute of ChemistryUniversity of UppsalaUppsalaSweden

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