Research on the Growth Mechanism of Alumina Ceramics with Columnar Grain

Shou Fan Rong; Yong Chang Zhu; Jing Qiang Zhang; Hong Li Liu; Chun Yan Shi

doi:10.4028/www.scientific.net/AMR.79-82.1899

Paper Titles

Synthesis of NH₂-Functionalized Nano-Fe₃O₄ Magnetic Polymer Adsorbent and its Application for the Removal of Cr (VI) from Industrial Wastewater
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Improvement on the Efficiency of Drawing during the Production of Microfibrillar Composites
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A Study of Surface Treatment on LY12 Aluminum Alloy by γ-APS
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Thermal Parameters of Sweat Lubricating Composite and its Effect on High Temperature Rolling Bearing
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Research on the Growth Mechanism of Alumina Ceramics with Columnar Grain
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Research on Zinc-Silica Composite Plating
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Experimental Research on the Preparation of Porous Activated Carbon from Orange Wastes
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Effects of Different Cooling Rate and Modifiers on the Microstructures of 4Y32 Aluminum Alloy
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Study on Seawater Corrosion of Fe-Al Intermetallic Compound
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 79-82Research on the Growth Mechanism of Alumina...

Research on the Growth Mechanism of Alumina Ceramics with Columnar Grain

Abstract:

Based on the structures and composition of ceramic materials, the microstructure design and new preparations were used to induce in situ grain growth by adjusting the main factors which had impacts on grain morphology. By adding CAS (CaO-Al2O3-SiO2) and Nb2O5, the complex toughened alumina ceramics with columnar grain was fabricated under pressureless sintering systematically. The influences of additives on the alumina ceramics with columnar grain were analyzed by means of TEM, SEM, XRD etc. The dynamic conditions of anisotropic growth of columnar grain were researched, and superior growth in some grain directions was induced by doping CAS and Nb2O5. The growth mechanism of columnar grains of alumina ceramics was explored, and established growth model.