Red light transmitting zirconia sintered body, method for producing the same, member comprising the sintered body, and jewelry goods and exterior component using the member

摘要

An object of the present invention is to provide a colored translucent zirconia sintered body having red color and high translucency. The present invention relates to a zirconia sintered body, characterized by containing 6 to 30 mo % of yttria and 0.1 to 5 mol % of cerium oxide in terms of CeO2, the cerium oxide containing an oxide of trivalent cerium. The zirconia sintered body of the present invention has, in addition of high hardness, diamond luster based on high refractive index inherent in zirconia, deep red color and transparency.

主权项

1. A zirconia sintered body comprising 6 to 30 mol % of yttria, and 0.1 to 5 mol % of cerium oxide in terms of CeO2, the cerium oxide containing an oxide of trivalent cerium;
wherein, in a sample of the zirconia sintered body having a thickness of 1 mm, a maximum value of inline transmission to visible light having a wavelength of 600 to 800 nm is 40% or more, and an average grain size of crystal particles is 10 μm or more and 50 μm or less.