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Explosive shock loading of alpha-Si3N4 powder

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Abstract

Alpha-Si3N4 powders were explosively shock loaded at levels of 260 and 570 kbar pressure. Specimens exhibited densification without additives into the 93 to 98% dense range as a result of shock-induced consolidation. X-ray line broadening investigations indicated that significant residual, internal strain levels of the order of 0.4% were developed in the densified material. Hardness and indentation fracture toughness values for shock-densified regions were nearly equivalent to those for ultra-high-pressure hot-pressed Si3N4 without densification aids.

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Authors and Affiliations

  1. Los Alamos National Laboratory, 87545, Los Alamos, New Mexico, USA

    J. J. Petrovic, B. W. Olinger & R. B. Roof

Authors
  1. J. J. Petrovic
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  2. B. W. Olinger
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  3. R. B. Roof
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Petrovic, J.J., Olinger, B.W. & Roof, R.B. Explosive shock loading of alpha-Si3N4 powder. J Mater Sci 20, 391–398 (1985). https://doi.org/10.1007/BF01026506

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  • DOI: https://doi.org/10.1007/BF01026506

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