| 摘要 |
The method for cleaning metal parts, particularly crack damaged gamma prime hardened nickel alloy parts but also including stainless steels, superalloys, and solid solution superalloys in order to render them brazable or otherwise bondable. The method makes use of elemental fluorine as the primary cleaning material. A reducing gas such as hydrogen may be present. The preferred source of elemental fluorine is by thermal decomposition of a fluorocarbon resin. The cleaned part has a surface layer free of oxides and depleted of aluminum and titanium. It is brazable.
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