Authors
1 Semi-conductors Department, Materials & Energy Research Center
2 semiconductors, Materials and Energy Research Center
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
5- Shouming Zhang, Song Wang, Wei Li, Yulin Zhu, Zhaohui Chen, Mechanical properties of the lowtemperature reactive melt infiltrated ZrB2–ZrC based composites, Materials Letters 78 (2012) 81- 84, ELSEVIER.
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