| Niedertemperaturverfahren zum Fuegen von Glas und dergleichen fuer Optik und Praezisionsmechanik (2007) | |||||||
Abstract | |||||||
| DE 102007060784 A1 UPAB: 20090702 NOVELTY - Joining of two or more components that are made of glass, ceramic and/or glass ceramic by using a water glass-joining solution having sodium-, potassium- and/or lithium ions, and/or a silica sol, comprises: introducing the joining solution and/or the silica sol on the joining surface located between the components to be joined and solidifying at mild temperatures, where the joining solution contains at least an additive, which is e.g. aluminum acetate, where the additive is added in such an amount that the pH-value of the water glass-joining solution or the silica sol is decreased. DETAILED DESCRIPTION - Joining of two or more components that are made from glass, ceramic and/or glass ceramic by using a water glass-joining solution having sodium-, potassium- and/or lithium ions, and/or a silica sol, comprises: introducing the joining solution and/or the silica sol on the joining surface located between the components to be joined and solidifying at mild temperatures, where the joining solution contains at least an additive, which is boric acid, boron compounds, from which boric acid is produced by hydrolysis, aluminum acetate, aluminum silicate, titanium compound, which in aqueous solution forms titanium-hydroxo cations, water soluble zinc compounds, water soluble zirconium compounds and water soluble yttrium compounds, where the additive is added in such an amount that the pH-value of the water glass-joining solution or the silica sol is decreased. USE - The method is useful for joining of components that are made of glass, ceramic and/or glass ceramic for optical and high-precision mechanics. ADVANTAGE - An extended period for the fine adjustment of the components to be joined can be possible and alternatively the process can also be accelerated. The additives, which can optimize the reaction time of the solution, cause less optical loss and increased stability. | |||||||
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