Sintering of Al2O3-Cr2O3 powder prepared by sol-gel process (特集 セラミック材料)
スポンサーリンク
概要
- 論文の詳細を見る
The sol-gel method was applied to create Al<SUB>2</SUB>O<SUB>3</SUB>-Cr<SUB>2</SUB>O<SUB>3</SUB> ceramics using aluminum ethylacetoacetate diisopropylate and chromium (III) chloride hexahydrate as starting materials. In the calcination at 600-1200°C it was found that the grains of Cr<SUB>2</SUB>O<SUB>3</SUB>-rich solid solution grew when they were exposed to the surrounding Al<SUB>2</SUB>O<SUB>3</SUB>-rich amorphous particles. The composition of the powders obtained by the sol-gel process changed with calcining temperature. Cr<SUB>2</SUB>O<SUB>3</SUB>-rich solid solutions firstly crystallize at low temperature and the composition of the crystallites changes as the crystals grow and react with the surrounding Al<SUB>2</SUB>O<SUB>3</SUB>-rich phases. The final sintered bodies fired under an Ar atmosphere showed higher relative densities as compared with those fired in air. A dense sintered body was not obtained when abnormal grains grew when calcining occurred.
- 日本材料学会の論文
著者
-
Fujita Motonari
Okayama Ceramic Research Foundation
-
SAKIDA Shinichi
Health and Environment Center, Okayama University
-
Yamaguchi Akira
Okayama Ceram. Res. Fndn. Bizen Jpn
-
NANBA Tokuro
Health Environ. Center, Okayama Univ.
-
OMMYOJI Junji
Okayama Ceram. Res. Fndn.
-
Inukai Keisuke
Grad. School Nat. Sci. Tech., Okayama Univ.
-
MIURA Yoshinari
Grad. School Environ. Sci., Okayama Univ.
-
FUJITA Motonari
Okayama Ceram. Res. Fndn.
-
YAMAGUCHI Akira
Okayama Ceram. Res. Fndn.
関連論文
- Reaction mechanism for the synthesis of Ti3AlC2 through an intermediate carbide of Ti3AlC from elemental Ti, Al, and C powder mixture
- Microwave Absorption Capacities of Silica Refractories
- Physical Properties of Silica Refractories
- Microwave Drying of Silica Refractories
- Analysis of Silica Brick after Long Service in a Coke Oven
- Influence of Al_2O_3 on Precipitation of Cr^ Compound in Ca-Cr-O System
- Synthesis of MgAlON by Carbothermal Reduction-Nitridation Process
- Synthesis of Al_4SiC_4 from Alumina, Silica and Graphite
- Development of a New Testing Apparatus for Measurement of Gas Permeability of Refractory Products
- Development of CaO-containing Materials for Submerged Entry Nozzles-1
- Reaction Mechanism and Effects of Al_4SiC_4 Added to MgO-C Brick
- Microstructure of Surface-Coated CaO Clinkers
- Influence of Distribution of Al-Additive on Microstructure of MgO-C Refractory
- Effects of Al_4SiC_4 Added to Al_2O_3-C Refractory
- Behavior and Effects of Al_4SiC_4 Added to Carbon Containing Refractories
- Oxidation and Slag Reactivity of an Al-Si-C Compound
- High Temperature Properties of a Composition in the System Al-Si-C-N
- Development of Cr-free Refractories for High Temperature Municipal Waste Incinerators
- Chemical recycling of inorganic wastes by using phase separation of glass
- My Recollections of the Chinese Refractory Field
- Fundamentals of the Microstructure of Silica Brick
- Densification Effect of Al_4SiC_4 Added to Alumina Carbon Refractories
- Recovery of Al_2O_3 Grains from Used Castables
- Influence of Additives on Precipitation of Cr^ Compound in Cr_2O_3-Al_2O_3-CaO System
- High-temperature Reaction of Al_4SiC_4 Coexisting with Carbon
- Sintering of Al2O3-Cr2O3 powder prepared by sol-gel process (特集 セラミック材料)
- Application of Laser Flash Method to Thermal Conductivity Testing of Refractories
- Methods of Thermal Conductivity Measurements for Refractories and Some Problems Accompanying Their Methods
- Influences of Distribution of Al Additive on Properties of MgO-C Refractories
- Diffusion of the Various Elements Added to Carbon Powder Body
- Effect of Adding Al_4O_4C to Carbon-Containing Refractories