| 摘要 |
<p>A method of removing residual carbon from solid surfaces, such as metal or glass, by contacting the surface with sulfur trioxide, either alone or as part of a fluid system, where the fluid can be a gas such as dry air or nitrogen, or a non-aqueous liquid such as a chlorinated hydrocarbon solvent, and thereafter rinsing the surface. The surface may be subsequently contacted with a passivating solution. This method provides a clean, chemically homogeneous surface desired for many surface treatments.</p> |
