Preparation and Mechanical Properties of ReAl11O18 Ceramics

Jun Dong Zhang; Ming Hao Fang; Zhao Hui Huang; Yan Gai Liu; Xin Min; Xiao Wen Wu

doi:10.4028/www.scientific.net/KEM.602-603.345

Paper Titles

The Effect of Nano-Al₂O₃ on Sintering Behavior and Mechanical Property of ZrO₂ Ceramics
p.327

Synthesis of Mullite Using Low-Grade Bauxite and Coal Gangue
p.331

Influence of Adding ZrO₂on the Properties of La₂Zr₂O₇ Ceramic
p.335

Chemical Stability of (Sm_1-xLa_x)₂Zr₂O₇ and Al₂O₃ at High Temperature
p.340

Preparation and Mechanical Properties of ReAl₁₁O₁₈ Ceramics
p.345

Property Changes of SiO₂ Aerogel on Insulation Performance under Different Time and High Temperature Condition
p.349

Homogeneous Microstructure of ZrO₂-BN Composites with In Situ Synthesized BN
p.353

The Effect of pH of the Aging Solution on Microstructure of Silica/Zirconia Aerogel
p.358

Microstructure of Hydrated Magnesia and MgAl₂O₄ Spinel Layer between Magnesia and Alumina
p.363

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Preparation and Mechanical Properties of ReAl₁₁O₁₈ Ceramics

Abstract:

In this paper, plate-like ReAl₁₁O₁₈(Re = La, Pr, Nd) toughened ceramics were prepared by pressureless sintering at 1650 °C for 5 h in air. The bulk densities of the sintered samples were between 4.7 to 5.3g/cm³. The mechanical properties of the ReAl₁₁O₁₈ ceramics were studied systematically at room temperature. The flexure strength and fracture toughness of ReAl₁₁O₁₈ceramics were 97.5 to 102.7 Mpa and 3.8 to 4.2Mpa.m^1/2. The results show that: The optimal temperature to synthesis ReAl₁₁O₁₈ ceramics was 1650 °C; The flexural strength and fracture toughness of the ReAl₁₁O₁₈ceramics increase with the increasing of its bulk density.