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Nano-scale Al2O3-ZrO2 eutectic ceramic structures with shapes of thin-wall and cylinder were prepared by ultrasonic-assisted laser engineered net shaping. In the preparation process, the power of ultrasonic was adjusted in real-time on the molten pool. The generation of refining grain by ultrasonic were discussed based on the principle of crystallography. Two methods to improve the fracture toughness...
Nano-sized Al2O3-ZrO2 eutectic ceramic structures were formed by ultrasonic-assisted laser engineered net shaping (LENS). The effects of ultrasonic power on shape, internal cracks, pores and periodic banded structure of nano-sized Al2O3-ZrO2 eutectic ceramic were investigated. X-ray diffraction analysis and scanning electron microscopy observation were carried out for sample phase composition and...
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