87.13 Corrosion and protection of metals 1. General introduction ) Corrosion: Destruction of materials due to the chemical, electrochemical and physical attack of the media Stone Sculpture before the Capitol, Washington D.c. White marble of Jinshui Bridge, Beijing1) Corrosion: Destruction of materials due to the chemical, electrochemical and physical attack of the media. White marble of Jinshui Bridge, Beijing Stone Sculpture before the Capitol, Washington D.C. 1. General introduction §7.13 Corrosion and protection of metals