METHOD FOR LEAD-TIGHT JOINT OF BORON NITRIDE CERAMICS WITH METALS Russian patent published in 1994 - IPC

Abstract SU 1739590 A1

FIELD: soldering. SUBSTANCE: grooves parallel to motion of solder are turned on surface of boron nitride part to align with slip plane of boron nitride. Then, active coating is applied based on titanium zirconium and their hydrides and soldering. Grooves are made with depth not less than thickness of active coating and located in central part of soldered joint. Extreme grooves are away from outer slip planes at distance equally 0.05-0.15 of width of soldered joint. Applied to active coating may be inactive coating of copper powder equally 0.1-0.5 of thickness of active coating. Yield of serviceable units with copper inactive coating is 100% , with nickel - 90% . EFFECT: higher quality of soldered joints due to activation of surface of boron nitride. 2 cl

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SU 1 739 590 A1

Authors

Eroshev V.E.

Pavlova V.D.

Koroleva I.I.

Dates

1994-01-15—Published

1979-06-21—Filed