High Temperature Strength Characteristics of a Unidirectionally Solidified Al2O3/GdAlO3 Eutectic Composite
スポンサーリンク
概要
- 論文の詳細を見る
A unidirectionally solidified Al2O3/GdAlO3 eutectic composite has a unique microstructure, in which continuous networks of single-crystal Al2O3 phases and single-crystal oxide compounds GAP (GdAlO3) interpenetrate without amorphous grain boundary phases. This material was called as Melt Growth Composite (MGC). Therefore, the MGCs have excellent high-temperature strength characteristics, creep resistance and thermal stability in an air atmosphere at very high temperature. For the purpose of ultra-high thermal efficiency and low NOx emission for gas turbine systems, non-cooling turbine nozzle vanes of Al2O3/GAP MGC were fabricated and those high temperature strength characteristics and thermal stability were evaluated. The MGC parts are thermally stable after heat treatment at 1700°C for 500 hours in an air atmosphere. This is attributed to the MGC's unique microstructure without amorphous grain boundary phases and its interfacial effect. These properties of MGCs seem to be prospective as an application to a gas turbine system.
- 公益社団法人 日本セラミックス協会の論文
公益社団法人 日本セラミックス協会 | 論文
- Ferromagnetism in Fe doped ZnO synthesized by co-precipitation method
- Study on structural, magnetic and transport properties of La_Ca_Mn_Co_xO_3 (x = 0.01-0.05) thin films
- Fabrication of the finestructured alumina materials with nanoimprint method
- Correlation between the temperature of molten state and the SH intensity of 30BaO・15TiO_2・55GeO_2 crystallized glass
- Preparation of Pt particles dispersing nanocomposites by thermal treatment of tetrachloroplatinate/layered double hydroxide (LDH)