Manufacturing of Porous Al-Cr Preforms for Composite Reinforcing Using Microwave Activated Combustion Synthesis
نویسندگان
چکیده
منابع مشابه
MICROWAVE SYNTHESIS OF B4C–Al2O3 COMPOSITE IN A MECHANICALLY ACTIVATED Al/B2O3/C POWDER MIXTURE
B4C–Al2O3 composite powder was produced by aluminothermic reduction in Al/B2O3/C system. In this research, microwave heating technique was used to synthesize desired composite. The ball milling of powder mixtures was performed in order to study the effect of mechanical activation on the synthesis process. The synthesis mechanism in this system was investigated by examining the correspondi...
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Abstract: Nano-structural synthesized materials can be fabricated utilizing intensive milling after combustion synthesis. The Al2O3-TiB2 ceramic composite has been synthesized by aluminothermic reactions between Al, Ti (TiO2), and B (B2O3 or H3BO3). Boric acid (H3BO3) is less expensive than boron oxide, and after being dehydrated at 200°C, boron oxide will be obtained. In this study, Al, TiO2, ...
متن کاملInvestigation of composite powder synthesis (Al2O3-WXSiY-WXBY) in aluminothermic combustion system (Al+B2O3+Si+WO3) using thermal analysis
Composites that are including silicide of tungsten and boride of tungsten intermetallic compound have properties such as high hardness, relatively good thermal shock, chemical stability and high strength at high temperature. The purpose of this investigation is evaluation of phase and microstructure of alumina base composite reinforced by boride and silicide of tungsten in three systems 1-Al+...
متن کاملMechanically Activated Combustion Synthesis of B4C-TiB2 Nanocomposite Powder
Boron carbide is one of the hardest materials. The combustion method was used to synthesize B4C-TiB2 nanocomposite powder in a B2O3-Mg-TiO2-C system. An experimental study of the formation of B4C–TiB2 nanoparticles was conducted in the thermal explosion mode. A mixture of B2O3:TiO2:Mg:C at a molecular ratio of 3:1:12:1 was chosen to obtain the B4C–TiB2. This powder mixture was milled for differ...
متن کاملCombustion Synthesis of Porous TiC/Ti Composite by a Self-Propagating Mode
Porous titanium carbide (TiC) and TiC/Ti composites were synthesized by self-propagating high-temperature synthesis (SHS). Titanium and carbon powders were blended by various Ti/C blending ratios. The heat of reaction between titanium and carbon was high enough to induce the self-sustaining reaction of TiC formation on condition that some processing parameters (Ti/C ratio and porosity of the pr...
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ژورنال
عنوان ژورنال: Archives of Metallurgy and Materials
سال: 2014
ISSN: 2300-1909
DOI: 10.2478/amm-2014-0196