Patent ID: 7842370
Filing Date: 2010-11-30
Classification: C04B,Y10T

Abstract:
1. A cordierite ceramic comprising at least zirconium oxide or hafnium oxide, and also including titanium oxide, wherein a molar ratio of zirconium (Zr), hafnium (Hf) and titanium (Ti) in terms of moles in the form of dioxides, respectively, which is given by the formula [(ZrO 2 +HfO 2 )/TiO 2 ], is in a range of 0.1 to 5; wherein a total content of the zirconium oxide and the hafnium oxide is 0.01 to 10% by mass when zirconium and hafnium are expressed as zirconium dioxide (ZrO wherein the zirconium oxide and the titanium oxide are contained as zirconium titanate, or the hafnium oxide and the titanium oxide are contained as hafnium titanate.