From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
The appearance of deposits on test specimens after corrosion tests.
| Identifier | ExFiles\Box 114\1\ scan0190 | |
| Date | 3rd April 1939 guessed | |
| Appearance of deposits on Test Specimens, after corrosion tests. | Material. | GX. | Wakefield's Hi-press. | Vacuum Hypoid. | Vacuum T.E.X. | |---|---|---|---|---| | | Half of specimen- | Half of specimen - | Half of specimen - | Half of specimen - | | | immersed | not immersed. | immersed | not immersed. | immersed | not immersed. | immersed | not immersed. | |---|---|---|---|---| | Phosphor Bronze | Thick black. | Thin black. | Thick black. | Thin black. | Thick black. | Thin black. | Thick black | Stained. | | Aluminium Bronze | Thick black. | Thin black. | Thick black. | Thin black. | Thick black. | Thin black. | Stained. | Stained. | | Mild Steel | Thin black. | Stained. | Thin black. | Stained. | Very thin black. | Stained. | Stained. | Unaffected. | | Stainless Steel | Thin black. | Stained. | Stained. | Stained. | Stained. | Stained. | Unaffected. | Unaffected | | Nature of deposit | Chlorides and sulphides. | Chlorides and sulphides. | Lead, chlorides and sulphides. | Chlorides (small) and sulphides. | HL./BPS. (5). | ||