The role of grain size in embrittlement of archaeological silver

Report (2001)

Authors

R.J.H. Wanhill

Corrosion Segregation Cracks Grain boundaries Grain size Archaeological silver Embrittlement

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Published Date

16-03-2001

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NLR Technical Publication TP 2001-125

Abstract

Archaeological silver may be embrittled by long-term corrosion and microstructural changes. The embrittlement of artifacts increases with increasing grain size. This is explained by considering the grain boundary character and models describing the interactions between microcracks, lattice dislocations and grain boundaries. Severely embrittled artifacts are frangible or even friable.

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