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Cleaning/Corrosion
General Test
| Question | Answer |
|---|---|
| Which of the following are acceptable to use in cleaning anodized surfaces? | Aluminum wool and fiber bristle brushes. |
| Which of these materials is the most anodic?Cadmium. 7075-T6 aluminum alloy. or Magnesium. | Magnesium. |
| For which of the following reasons would a water break test be conducted? | To make certain that a bare metal surface is thoroughly clean. |
| Which of these materials is the most cathodic? Zinc. 2024 aluminum alloy. or Stainless steel. | Stainless Steal |
| The interior surface of sealed structural steel tubing would be best protected against corrosion by which of the following? | A coating of linseed oil. |
| How may magnesium engine parts be cleaned? | Wash with a commercial solvent, decarbonize, and scrape or grit blast. |
| Which of the following are acceptable to use when utilizing chemical cleaning agents on aircraft? | Cotton fiber wiping cloths when using a flammable agent and atomizing spray equipment. |
| A primary cause of intergranular corrosion is | improper heat treatment. |
| Select the solvent recommended for wipedown of cleaned surfaces just before painting. | Aliphatic naptha. |
| Caustic cleaning products used on aluminum structures have the effect of producing | corrosion. |
| Select the solvent used to clean acrylics and rubber. | Aliphatic naphtha. |
| When an anodized surface coating is damaged in service, it can be partially restored by | chemical surface treatment. |
| Which of the following are the desired effects of using Alodine on aluminum alloy? | A slightly rough surface and increased corrosion resistance. |