Abstract: The present invention relates to a silica member characterized in that the silica member is equipped with a body section comprising a silica glass, the body section is equipped with an other member joining section for another member, the other member joining section is provided with, in order from the body section side, an underlayer, an intermediate layer, and a surface layer formed from Au, the porosity of the underlayer is within the range of 5-10%, the porosity of the intermediate layer is within the range of 4-5%, the thickness of the underlayer is within the range of 20-100 nm, and the thickness of the intermediate layer is within the range of 100-200 nm.

Abstract: The present invention relates to a glass member in which an inorganic phosphor is dispersed in a glass matrix, in which the glass member includes an SiO2—B2O3 based glass as the glass matrix, and the SiO2—B2O3 based glass includes SiO2 as a main component thereof, and includes, based on a total amount of the SiO2—B2O3 based glass: Al2O3 in an amount of 4 to 10 wt %; and MgO and ZnO in a total amount of 0.1 to 0.7 wt %.

Abstract: The present invention relates to a silica glass member including: a main body including a silica glass and having a bonding part for bonding to another member; and a bonding film which is provided on the bonding part, has a thickness of 0.2 ?m to 10 ?m, and includes Au and a glass formed through melting of glass frit, in which the bonding film is produced from Au powder having an average particle diameter of 3 ?m or less and glass frit having a softening point of 850° C. or lower, a process for producing a silica glass member, and a process for bonding a ceramic and a silica glass.

Abstract: The present invention relates to a glass member in which an inorganic phosphor is dispersed in a glass matrix, in which the glass member includes an SiO2—B2O3 based glass as the glass matrix, and the SiO2—B2O3 based glass includes SiO2 as a main component thereof, and includes, based on a total amount of the SiO2—B2O3 based glass:Al2O3 in an amount of 4 to 10 wt %; and MgO and ZnO in a total amount of 0.1 to 0.7 wt %.

Abstract: The present invention relates to a silica glass member including: a main body including a silica glass and having a bonding part for bonding to another member; and a bonding film which is provided on the bonding part, has a thickness of 0.2 ?m to 10 ?m, and includes Au and a glass formed through melting of glass frit, in which the bonding film is produced from Au powder having an average particle diameter of 3 ?m or less and glass frit having a softening point of 850° C. or lower, a process for producing a silica glass member, and a process for bonding a ceramic and a silica glass.