It is then sintered (150) at high temperatures to convert the ceramic to polycrystalline ceramic.

The polycrystalline ceramic is then activated, forming a catalytically active multi-phase glass-ceramic.

For this purpose, the polycrystalline ceramic comprises an optoceramic phase and a pore phase, wherein the polycrystalline ceramic has a diffuse reflectance of at least 70% for a wavelength of 600 nm and a specimen thickness of 1 mm.

A method for the manufacture of superconducting polycrystalline ceramic materials of the decomposition of a mixture of isopropoxides.

In the course of this sintering step the product develops its polycrystalline ceramic structure.

A polycrystalline ceramic scintillator body includes a ceramic scintillating material comprising an oxide of gadolinium (Gd) and a second rare earth element (Re).

A final top metal layer is then deposited (160) on the polycrystalline ceramic to form the other plate of the capacitor

A single-crystal solid oxide material, rather than a polycrystalline ceramic, is used for electrolytic and fuel cell applications.

The invention describes an orthodontic device with a ceramic tooth attachment made of a polycrystalline ceramic structure and various additives with an optical transparency to visible light of between 5 and 60 % at a thickness of 0.5 mm.

The tubes (22) are preferably at least a 99.9 % pure polycrystalline aluminum oxide ceramic with traces of other metallic elements than aluminum.

The catalyst precursor/glass-ceramic precursor mixture is then melted to form an amorphous glass material which, in turn, is devitrified to form a polycrystalline ceramic.

The resulting amorphous or polycrystalline intermediate layer made of titanium dioxide makes the skewed growth of the polycrystalline piezoceramic layer easier.

A bonded abrasive article is provided that includes abrasive grains within a bond matrix, the abrasive grains including cubic boron nitride (cBN) and the bond matrix including a polycrystalline ceramic phase.

The bracket body (12) may be made of a polycrystalline ceramic having a grain size distribution characterized by an average grain size in the range of larger than 3.4 μm to about 6 μm.