Click here to view fulltext PDF

Permanent link:
https://www.ias.ac.in/article/fulltext/boms/024/02/0125-0128

Zinc oxide; microwave sintering; microhardness.

The mechanical characterization of microwave sintered zinc oxide disks is reported. The microwave sintering was done with a specially designed applicator placed in a domestic microwave oven operating at a frequency of 2.45 GHz to a maximum power output of 800 Watt. These samples with a wide variation of density and hence, of open pore volume percentage, were characterized in terms of its elastic modulus determination by ultrasonic time of flight measurement using a 15 MHz transducer. In addition, the load dependence of the microhardness was examined for the range of loads 0.1–20 N. Finally, the fracture toughness data (𝐾_IC) was obtained using the indentation technique.

A K Mukhopadhyay¹ M Ray Chaudhuri¹ A Seal¹ S K Dalui¹ M Banerjee¹ K K Phani¹

1. Central Glass and Ceramic Research Institute, Kolkata 700 032, India

Published

April 2001