Improved joining of surface modified silicon nitride ceramics
Silicon nitride ceramics are leading candidate materials for a vast number of thermo-mechanical applications. The ability to join these materials to themselves and to metals or alloys reliably is vital to their widespread commercial use. In the present study, Si(3)N(4) ceramics with Y(2)O(3) and Al(2)O(3) as additives were solid-state bonded using a Ni-Cr alloy foil as an insert layer. Using established optimum joining conditions of temperature, pressure and atmosphere, the effect on the bond quality of the ceramic surface state, such as ground or polished, thermally annealed, Cr-coated and ion-implanted, was investigated. It was shown that by proper tailoring of the ceramic/metal interface the bond properties, flexural strength and high temperature behaviour are greatly enhanced.
Bibliographic Reference: Paper presented: 7th CIMTEC World Ceramics Congress, Montecatini Terme (IT), June 24-30, 1990
Availability: Available from (1) as Paper EN 35521 ORA
Record Number: 199011186 / Last updated on: 1994-12-01
Original language: en
Available languages: en