METAL-CERAMIC COMPOSITE MATERIAL AND PROCESS FOR ITS PRODUCTION

    公开(公告)号:CA2190331A1

    公开(公告)日:1997-05-31

    申请号:CA2190331

    申请日:1996-11-14

    Inventor: SCHUELER CLAUS

    Abstract: Metal-ceramic composite materials which combine advantageous properties of ceramic and metal and have the composition (Mg1-xCux)O + Agy, where 0.03 ~ x ~ 0.25 and 0.001 ~ y ~ 0.5, can be produced in a onestage process. In this process, sintering is carried out in air at a sintering temperature in the temperature range of 980.degree.C - 1100.degree.C for a sintering time in the range of 1.5 - 2.5 hours. The rate of temperature rise from room temperature to the sintering temperature is in the range of 8 - 50 K/min. When 0.01 ~ y ~ 0.1, such composite materials are suitable as materials having high toughness for low-friction, selflubricating sliding bearings, in particular of ceramic. When 0.1 ~ y ~ 0.2, they are suitable as electrical contact materials in fuel cells and for abrasionresistant sliding contacts. When 0.15 ~ y ~ 0.5, the composite materials have a high conductivity.

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