Boron and other High-Strength, High-Modulus, Low-Density Filamentary Reinforcing Agents

  • Harold E. DeBolt


The development of high-strength, high-modulus, low-density filaments and composites, as well as their application to the primary load-carrying structures of various present-day aircraft systems, stemmed mainly from a continuing drive by the Air Force Materials Laboratory (AFML) to develop improved structural materials that would reduce structural weight and increase systems performance. Although fiberglass-reinforced composites, which offer low density and high strength, had previously been applied to radomes, fairings, and other secondary aerospace structures, they could not be considered for use in primary load-carrying structures due to their inherent lack of stiffness. C. P. Talley of Texaco Experiment Incorporated reported in 19591 that high-strength and high-stiffness boron filaments could be produced via chemical vapor deposition.


Carbon Substrate Boron Carbide Tensile Modulus Average Tensile Strength Tantalum Carbide 
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Copyright information

© Van Nostrand Reinhold Company Inc. 1982

Authors and Affiliations

  • Harold E. DeBolt
    • 1
  1. 1.Specialty Materials DivisionAvco CorporationLowellUSA

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