| 摘要 |
The mould ( 10 ) includes at least one part ( 20 ), intended to be in contact with the component ( 12 ) being moulded, made from sintered vitreous silica. According to the process, said component ( 12 ) is formed by the superplastic forming in the mould ( 10 ) of a plate ( 18 ) made of a material capable of undergoing superplastic deformation, for example titanium or titanium alloy, aluminium or aluminium alloy, or any material exhibiting superplastic properties. Preferably, a barrier is formed between at least a part of the contact surfaces of the mould ( 10 ) and the component ( 12 ) being moulded, for example by coating with boron nitride, at least partially, the contact surfaces of the mould ( 10 ) and the component ( 12 ) being moulded, before placing the plate ( 18 ) in the mould ( 10 ), and/or by injecting an inert gas, notably helium or argon, between the contact surfaces of the mould ( 10 ) and the component ( 12 ) being moulded.
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