@inproceedings{9f259f20b0ee4db588aa8b8d5d490756,
title = "Directionally solidified Al2O3/GAP eutectic ceramics by micro-pulling-down method",
abstract = "We reported a novel route to prepare directionally solidified (DS) Al2O3/GAP eutectic ceramics by micro-pulling-down (μ-PD) method. The eutectic crystallizations, microstructure characters and evolutions, and their mechanical properties were investigated in detail. The results showed that the Al2O3/GAP eutectic composites can be successfully fabricated through μ-PD method, possessed smooth surface, full density and large crystal size (the maximal size: φ90 mm × 20 mm). At the process of Diameter, the as-solidified Al2O3/GAP eutectic presented a combination of {"}Chinese script{"} and elongated colony microstructure with complex regular structure. Inside the colonies, the rod-type or lamellar-type eutectic microstructures with ultra-fine GAP surrounded by the Al2O3 matrix were observed. At an appropriate solidificational rate, the binary eutectic exhibited a typical DS irregular eutectic structure of {"}chinese script{"} consisting of interpenetrating network of α-Al2O3 and GAP phases without any other phases. Therefore, the interphase spacing was refined to 1-2 μm and the irregular microstructure led to an outstanding vickers hardness of 17.04 GPa and fracture toughness of 6.3 MPa × m1/2 at room temperature.",
author = "Xue Cao and Haijun Su and Fengwei Guo and Xi Tan and Lamei Cao",
note = "Publisher Copyright: {\textcopyright} 2016 Author(s).; International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016 ; Conference date: 19-09-2016 Through 23-09-2016",
year = "2016",
month = nov,
day = "10",
doi = "10.1063/1.4966314",
language = "英语",
series = "AIP Conference Proceedings",
publisher = "American Institute of Physics Inc.",
editor = "Psakhie, \{Sergey G.\} and Fomin, \{Vasily M.\} and Panin, \{Victor E.\}",
booktitle = "Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016",
}