National Institute of Advanced Industrial Science and Technology (AIST) Anagahora, Shimo-Shidami, Moriyama-ku Nagoya, Aichi 463-8560 Japan 2266 Anagahora, Shimo-Shidami, Moriyama-ku Nagoya, Aichi 463-8560 Japan 2266
The ceramic industry uses enormous amounts of energy
to produce products at high temperatures. Energy-saving measures based on
sintering process improvements are examined.
Oxide ceramics were irradiated by two different methods
during microwave sintering: intermittent use of the same high power levels
(time-control method) and continuous use of lower, increasing levels of power
(power-control method). We found that: 1) the power consumption and efficiency
of the time-control method were lower than those of the power-control method;
2) the power-control method gave more precise control of temperature under
our experimental conditions; 3) sample densification did not differ greatly
between the two methods; and 4) grain growth did not differ greatly between
the two methods.