Tarnishing and corrosion of copper alloys under various laboratory conditions

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PhD Monika Walkowicz, PhD Piotr Osuch, Prof. Beata Smyrak, Prof. Andrzej Mamala, Prof. Tadeusz Knych

The paper discusses the results of research on tarnishing and corrosion of most commonly used
copper alloys, including: ETP copper, brass (CuZn37, CuZn15), tin bronze (CuSn6, CuSn12,
CuSn18), aluminium bronze (CuAl10Ni5Fe4), copper-nickel alloys (CuNi10Fe1Mn, CuNi15Sn8),
nickel silvers (CuNi12Zn20, CuNi18Zn20). In particular, the paper discusses laboratory experiments
on corrosion tests of the materials in a highly aggressive chloride vapor environment. Experiments
cover different parameters such as time of exposition as well as different compositions of the
materials. Investigations include characterization of the corrosion products on the surface of various
copper alloys.

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