Patinas

n.

（青铜器上的）铜绿( patina的名词复数 )；绿锈；（旧木器等表面）年久而产生的光泽；神情

Modeling and rendering of metallic patinas
Protective patinas applied on stony façades of historical buildings in the past
Interaction of rock and atmosphere: patinas on Mediterranean monuments
Interaction of rock and atmosphere: patinas on Mediterranean monuments. Environ Geol 36(1-2):137-149
Morphology and mechanisms of formation of natural patinas on archaeological Cu–Sn alloys
Black crusts and patinas on Pentelic marble from the Parthenon and Erechtheum (Acropolis, Athens): characterization and origin
Composition and electrochemical properties of natural patinas of outdoor bronze monuments
Electrochemical and spectroscopic characterizations of patinas formed on an archaeological bronze coin
Evaluation of the protective properties of natural and artificial patinas on copper. Part I. Patinas formed by immersion
Atmospheric corrosion of copper and the colour, structure and composition of natural patinas on copper