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Reliable joining of ceramics to metals is often undermined by the development of residual stresses in the bonded assembly due to the mismatches in the thermal and elastic properties of the materials. It is essential to predict and assess residual stresses in joints. The residual stresses in four brazed Si(3)N(4) (SN) ceramic-metal joints: Nb/SN, Cu/SN, Ta/SN and Kovar/SN) were determined via an X-ray diffraction (XRD) technique combined with triaxial stress analysis. The stress profiles obtained showed the highest for the Kovar/SN joint (376 MPa) and the lowest for the Cu/SN joint (57 MPa). These were in good agreement with those from the analytical calculations and from the neutron diffraction measurements.

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Authors: YVON P J, JRC Petten (NL);SLIFIRSKI J, JRC Petten (NL);PETEVES S D, JRC Petten (NL)
Bibliographic Reference: Paper presented: EUROMAT 95, Venice (IT), September 25-28, 1995
Availability: Available from (1) as paper EN 39374 ORA
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