Preparation of AlN-ZrO2(Ca) Composites by Hot Pressed Sintering

Xian Tao Chen; Jing Long Bu; Rong Lin Wang; Jun Xing Chen

doi:10.4028/www.scientific.net/AMR.399-401.347

Paper Titles

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Effect of Sintering Temperatures on the Reaction-Bonded Si₃N₄/SiC Composite Ceramics
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Formation of Decarbonization Layer and its Effect on Corrosion Resistance of Zirconia Graphite Materials
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Synthesis and Structural Characterization of Oleic Acid Embedded Layered Magnesium Borate
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Preparation of AlN-ZrO₂(Ca) Composites by Hot Pressed Sintering
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A Study on the Tensile Strength of the Layer Splice Laminates
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Preparation and Recognition Properties of Levodropopizine Molecularly Imprinted Composite Membranes
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Synthesis and Characterization of Temperature-Sensitive TSPU/PNIPAAm Semi-IPN Polymer
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Anodic Surface Treatment on Carbon Fibers - The Effect on Microstructure of Pyrocarbon Matrix during Chemical Vapor Deposition
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 399-401Preparation of AlN-ZrO2(Ca) Composites by Hot...

Preparation of AlN-ZrO₂(Ca) Composites by Hot Pressed Sintering

Abstract:

AlN-ZrO₂ composites were prepared by hot pressed sintering with AlN particle (d≈2mm, d≈1.5mm and d≈1mm) and ZrO₂ powder as material. Its phase composition, thermal conductivity and sintering performance were investigated by XRD, SEM, EDS and performance testing. The results showed that AlN could be reserved in samples, and the thermal conductivity and the apparent porosity of the samples ascended with increase of the content of AlN, and the bending strength of the samples with same AlN particle occurred change according to V-shape with content of AlN increasing. Thereinto, the thermal conductivity of the samples with 1.5mm AlN was most excellent, amang samples with AlN particle of 2mm, 1.5mm and 1mm, and sintering performance of the samples with 1mm AlN was best. Particle interface of AlN and ZrO₂ was high concentration area of elements Ca and O, and was a structural loose crack area with CaAl₁₂O₁₉ formed. The area is abominable for performances of AlN-ZrO₂ composites such as thermal conductivity, density and strength. It is more appropriate for preparation of AlN-ZrO₂ composites with AlN particle of 1.5mm and 1mm as materials.