High temperature glass solder and method for producing the same

Simple SummaryContent extracted from patent full text and abstract with AI.

This invention relates to a high temperature glass solder and a method for producing a seal between two components using this glass solder. The key feature is a novel sealing arrangement where two components are joined by a special glass solder that becomes soft at temperatures between 550 and 900°C. The components are designed with projections that form a narrow gap specifically shaped to hold the solder glass. Thanks to the geometry and material properties, the glass solder remains stable and leak-proof at high temperatures, especially in applications that require gas-tightness and electrical insulation, such as fuel cells.

Use CasesContent extracted from patent full text and abstract with AI.

• Sealing joints in high-temperature fuel cells, especially solid oxide fuel cells (SOFCs)
• High-temperature sensors or electronic devices requiring gas-tight and electrically insulating seals
• Joining ceramic or metallic components in chemical reactors or industrial furnaces
• Manufacture of high-temperature heat exchangers
• Electrical insulation seals in power generation systems operating at elevated temperatures

BenefitsContent extracted from patent full text and abstract with AI.

• Enables long-term, high-temperature, gas-tight, and electrically isolating seals between components
• Reduces risk of seal cracking or leaking due to thermal cycling and mechanical stresses
• Improved mechanical stability and chemical resistance at operating temperatures up to 900°C
• Adaptable to different component materials and geometries
• Efficient manufacturing process using glass solder as paste, powder, or pre-formed foil
• Requires less glass material due to narrow gap design, reducing cost and improving robustness

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

The seal arrangement has two components (1,2) to be joined are arranged, and whose surfaces are spaced at distance (x). A solder glass sealing joint is provided between the components. The components are provided with projections in the region of the solder glass sealing joint. A gap is formed between the projections for receiving the solder glass (3a). The gap height is smaller than height of the distance. The solder glass is softened at temperature of 550-900[deg] C. An independent claim is included for a method for manufacturing seal arrangement.