METHOD TO JOIN HEAT-RESISTANT COBALT-BASED ALLOY AND CERAMICS BASED ON SILICON NITRIDE Russian patent published in 2011 - IPC B23K20/22 

FIELD: technological processes.

SUBSTANCE: invention relates to a technology for joining structural elements of products that operate under high thermomechanical loads. The method to join a heat-resistant cobalt-based alloy with ceramics based on silicon nitride includes diffuse welding at temperature of 900±10°C, pressure of 17±1 MPa for 1800±30 s. An intermediate material is previously applied onto welded surfaces. The intermediate material is a mechanical mixture with content of 0.1…0.3 wt % Cu, 0.1…0.3 wt % Co, the balance is Ni. The strength of the produced compound is σ_c=100±5 MPa.

EFFECT: expansion of technological capabilities and increased strength of connection of heat-resistant cobalt-based alloy with ceramics on the basis of silicon nitride.

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