Patent ID: 7937968
Filing Date: 2011-05-10
Classification: C03B,C03C

Abstract:
1. A method for bonding components made of quartz glass using a substance to substance bond by forming an SiO 2 -containing bonding mass between connecting surfaces of the components, said method comprising the following steps: (a) providing an aqueous slurry with a solid fraction of amorphous SiO (b) forming a slurry mass between the connecting surfaces which are fixed in position with regard to each other; (c) drying of the slurry mass; and (d) solidifying the slurry mass by sintering and vitrifying the sintered slurry mass so as to form the SiO wherein the sintering is performed at a first heating temperature in a sintering furnace in which the components to be connected are placed and homogeneously heated; and wherein the vitrification is performed at a second heating temperature higher than the first heating temperature using an additional directional heat source whose maximal heating effect is limited locally to the slurry mass.