| 摘要 |
The invention relates to a process for producing metallic matrix composite materials reinforced by ceramic or graphite fibres, wherein the fibres are pre-treated; first they receive a nickel coating, then a second coating which is usually copper and is lost on dipping the fibres finally into a molten metal bath which becomes the matrix of the resulting composite material. Furthermore, for certain matrix metals, an additional third coating comprising a noble metal, for example silver, can be applied to the fibres. The nickel coating preferably has a minimum thickness of 0.5 mu m, and the second coating which is lost also has a minimum thickness of 0.5 mu m. After the two or more than two successive coatings have been applied to the fibres, the fibres are incorporated in a metal matrix composite material by, for example, dipping them into a bath of the desired molten matrix metal or bringing them into a suitable mould and pouring the molten metal around them. This can take place under ordinary atmospheric conditions without the use of reduced pressure or an inert gas atmosphere.
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