A translucent in-vivo indwelling device with a translucent region including a rare earth doped fluorapatite.

An article comprises a body having a coating. The coating comprising a eutectic system having a super-lattice of a first fluoride and a second fluoride. The coating includes a glaze on a surface of the coating, the glaze comprising the eutectic system having the super-lattice of the first fluoride and the second fluoride.

An article comprises a body having a coating. The coating comprising a eutectic system having a super-lattice of a first fluoride and a second fluoride. The coating includes a glaze on a surface of the coating, the glaze comprising the eutectic system having the super-lattice of the first fluoride and the second fluoride.

Coated glass or glass ceramic substrates having high temperature resistance, high strength, and a low coefficient of thermal expansion. The coating includes pores, is fluid-tight and suitable for coating a temperature-resistant, high-strength glass or glass ceramic substrate with a low coefficient of thermal expansion, and to a method for producing such a coated substrate.

Coated glass or glass ceramic substrates having high temperature resistance, high strength, and a low coefficient of thermal expansion. The coating includes pores, is fluid-tight and suitable for coating a temperature-resistant, high-strength glass or glass ceramic substrate with a low coefficient of thermal expansion, and to a method for producing such a coated substrate.

The present invention is directed to a kind of machinable glass ceramic which can be chemically toughened. The machinable and chemically toughenable glass ceramic, which comprises, as represented by weight percentage based on the following compositions, 25-75 wt % of SiO.sub.2, 6-30 wt % of Al.sub.2O.sub.3, 0.1-30 wt % of Na.sub.2O, 0-15 wt % of K.sub.2O, 0-30 wt % of B.sub.2O.sub.3, 4-35 wt % of MgO, 0-4 wt % of CaO, 1-20 wt % of F, 0-10 wt % of ZrO.sub.2, 0.1-10 wt % of P.sub.2O.sub.5, 0-1 wt % of CeO.sub.2 and 0-1 wt % of SnO.sub.2, wherein P.sub.2O.sub.5+Na.sub.2O>3 wt %, and Al.sub.2O.sub.3+Na.sub.2O+P.sub.2O.sub.5>17 wt %. Mica crystalline phase can be formed in the glass ceramic and the glass ceramic can be chemically toughened by one step, two steps or multiple steps with depth of K-ion layer of at least 15 m and surface compress stress of at least 300 MPa. The profile on depth of the ion exchange layer follows the complementary error function. Hardness can be improved by at least 20% after chemical toughening. The dimension deviation ratio is less than 0.06% by ion-exchanging.

The present invention is directed to a kind of machinable glass ceramic which can be chemically toughened. The machinable and chemically toughenable glass ceramic, which comprises, as represented by weight percentage based on the following compositions, 25-75 wt % of SiO.sub.2, 6-30 wt % of Al.sub.2O.sub.3, 0.1-30 wt % of Na.sub.2O, 0-15 wt % of K.sub.2O, 0-30 wt % of B.sub.2O.sub.3, 4-35 wt % of MgO, 0-4 wt % of CaO, 1-20 wt % of F, 0-10 wt % of ZrO.sub.2, 0.1-10 wt % of P.sub.2O.sub.5, 0-1 wt % of CeO.sub.2 and 0-1 wt % of SnO.sub.2, wherein P.sub.2O.sub.5+Na.sub.2O>3 wt %, and Al.sub.2O.sub.3+Na.sub.2O+P.sub.2O.sub.5>17 wt %. Mica crystalline phase can be formed in the glass ceramic and the glass ceramic can be chemically toughened by one step, two steps or multiple steps with depth of K-ion layer of at least 15 m and surface compress stress of at least 300 MPa. The profile on depth of the ion exchange layer follows the complementary error function. Hardness can be improved by at least 20% after chemical toughening. The dimension deviation ratio is less than 0.06% by ion-exchanging.

Provided is a solid electrolyte having a high ion conductivity and excellent in battery performance not going through a step of removing water such as a drying step, while simplifying the production process and reducing the production cost. Specifically, provided is a method for producing a sulfide-based solid electrolyte, including causing a reaction of an alkali metal sulfide and a specific substance through treatment of mixing, stirring, grinding or a combination thereof, in the absence of a solvent or in a solvent except for water.

Provided is a solid electrolyte having a high ion conductivity and excellent in battery performance not going through a step of removing water such as a drying step, while simplifying the production process and reducing the production cost. Specifically, provided is a method for producing a sulfide-based solid electrolyte, including causing a reaction of an alkali metal sulfide and a specific substance through treatment of mixing, stirring, grinding or a combination thereof, in the absence of a solvent or in a solvent except for water.

The present invention relates generally to silicate-based coatings and to methods to make and apply same. In one embodiment, the silicate-coatings of the present invention are formed from a two part mixture of phosphate-based component and a glass-based component. In another embodiment, the silicate-based coatings of the present invention are free from any organic materials.