Title :
The effect of SiC whisker on the performances of Al2O3 matrixceramics mould for hollow turbine blade
Author :
Lu, Z.L. ; Fan, Y.X. ; Yang, Daniel S. ; Li, D.C.
Author_Institution :
State Key Lab. of Manuf. Syst. Eng., Xi´an Jiaotong Univ., Xian, China
fDate :
July 30 2013-Aug. 2 2013
Abstract :
To improve the room-temperature and medium-temperature bending strengths of Al2O3 matrix ceramic mould for hollow turbine blade, SiC whisker was added. The samples´ microstructure and phase were tested by Scanning Electron Microscope and X-Ray Diffraction, the relationship between the bending strength and phase were mainly analyzed. The result shows that the room-temperature bending strength of pre-sintering samples at 1250°C was respectively 19.6MPa and 54.75MPa when the content of SiC whisker was 4wt% and 8wt%. The medium-temperature bending strength of samples was respectively 1.56MPa to 0.91Mpa and 1.85MPa to 1.02MPa when the content of SiC whisker was 4wt% and 8wt% during 400°C to 600°C, and was the lowest at 500°C. After pre-sintering at 1250°C, the shrinkage of the samples with 4wt% and 8wt% SiC whisker was -0.06% and 0.7% respectively. It is possible to fabricate high-performance Al2O3 matrix ceramic mould for hollow turbine blade.
Keywords :
X-ray diffraction; bending strength; blades; ceramics; moulding; scanning electron microscopy; shrinkage; silicon compounds; sintering; turbines; Al2O3; SiC; X-ray diffraction; alumina matrix ceramics mould; hollow turbine blades; medium temperature bending strength; presintering; room temperature bending strength; scanning electron microscopes; shrinkage; silicon carbide whisker; temperature 1250 degC; temperature 400 degC to 600 degC; Aluminum oxide; Blades; Ceramics; Educational institutions; Silicon carbide; Turbines; Bending strength; Shrinkage; SiC whisker; Turbine blade;
Conference_Titel :
Assembly and Manufacturing (ISAM), 2013 IEEE International Symposium on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4799-1656-6
DOI :
10.1109/ISAM.2013.6643494
