Abstract
Laser focusing can achieve high temperature, so ceramics with high melting point and high strength can be fabricated by laser synthesizing without sintering flux. In this paper, Al2O3, Al2O3-5%mol Cr2O3 and Al2O3-20% wt ZrO2 powders have been sintered to fabricate oxide ceramics with a CO2 laser of 600-2000w. The product of Al2(WO4)3 is found as a new compound which is missed in two dimensional equilibrium phase diagrams. The microstructure of this ceramic is analyzed by use of X-ray diffraction, metalloscope and scanning electronic microscope. The hardness is measured by durometer. It is shown the hardness is higher than that produced with conventional sintering method in furnace.
Original language | English |
---|---|
Pages (from-to) | 770-774 |
Number of pages | 5 |
Journal | Zhongguo Jiguang/Chinese Journal of Lasers |
Volume | 18 |
Issue number | 10 |
State | Published - Jan 1 1991 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering