Journal of Advanced Materials and Technologies

Journal of Advanced Materials and Technologies

Influence of Type and Pressure of Synthesis Environment on ZrB2-ZrC Nano-Structured Powder Characteristics Synthesized by MASHS as a Heat Protective Shield in Aerospace Applications

Authors
F. Adibpur 1
M. Zakeri 1
S.A. Tayebifard 2
1 Semi-conductors Department, Materials & Energy Research Center
2 semiconductors, Materials and Energy Research Center
10.30501/jamt.2010.70243
Abstract
Mechanical Activation Assisted Self-Propagating High-Temperature Synthesis (MASHS), as an advanced method in early decades is used for synthesis of advanced engineering compounds and composites. In this research influence of type and pressure of combustion environment on synthesis of nano-structured composite characteristics included reinforced ZrB2 field by ZrC which has effective and important applications as a heat protective shield in supersonic and re-entry vehicles industry was studied. Raw materials powder were mixed stoichiometrically according to 2ZrO2+B2O3+C+7Mg=ZrB2+ZrC+7MgO chemical equation and activated for 10 hours by a ball mill machinery. Used environments for this study were vacuumed, continuous flow of Argon inert gas and pressurized argon atmosphere reactor chambers. Studies revealed that by changing the tack from vacuum to continuous flow of Argon and then to pressurized Argon, the process became more and more controllable and because of this, arbitrary phases of our own accord nano-composite were synthesized.
Keywords
Zirconium Di-boride
Zirconium Carbide
MASHS
Aerospace
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Journal of Advanced Materials and Technologies
Volume 2, Issue 4
Winter 2013
Pages 53-59

  • Receive Date 21 July 2013
  • Revise Date 14 December 2013
  • Accept Date 12 January 2014