| 摘要 |
The present invention provides a high vacuum component, e.g. a vacuum chamber wall (1) or a component that is operated or positioned within a vacuum chamber in use. The component is substantially formed of a layered material comprising a fibrous composite material layer (4) having a surface that is coated with a copper intermediate layer (5) and an impermeable outer layer (6) of nickel. In use the outer layer (6) is exposed to a high vacuum. |
