K. Yamana et al., ELECTRICAL-RESISTANCE AND RELATED PROPERTIES OF MULLITE ZIRCONIA COMPOSITES, Nippon Seramikkusu Kyokai gakujutsu ronbunshi, 103(2), 1995, pp. 184-188
Mullite/zirconia composite materials were characterized in terms of el
ectrical conductivities, structure and microstructure. It was found th
at the conductivity assumes a minimum at about 10 mass% ZrO2, The high
est conductivity was observed in the range of 60-100 mass% ZrO2. XRD s
tudies have revealed that the tetragonal phase of zirconia assumes the
highest concentration at 60 mass% ZrO2.