In museum and archive collections, sometimes feature objects made of lead or lead-tin alloys (PbSn). Kept in environments containing acetic acid vapors, these objects can develop an active corrosion. This manifests itself in the form of as white powdery corrosion products composed of basic lead carbonates and hydroxycarbonates. In the past, various chemical treatments could be used to remove it. ...
The CLAMTEC3 project is a method of extrem surface qualitatif, and possibly quantitatif, analysis of an unknown alloy composition thanks to corrosion potential versus time measures. It is the following of a first project nammed SPAMT-Test4 conducted by Christian Degrigny and his collaborators of the applied Research and Development section of the Haute Ecole Arc de Conservation-restauration of...
