Destannification of Ancient Indian High Tin Bronze / Entzinnung einer altindischen hochzinnhaltigen Bronze

Autor: M. C. Srivastava, R. Balasubramaniam
Rok vydání: 1997
Předmět:
Zdroj: Practical Metallography. 34:573-582
ISSN: 2195-8599
0032-678X
DOI: 10.1515/pm-1997-341106
Popis: The surface oxide and underlying metal of an ancient Indian high tin bronze bowl (28 wt.% Sn) has been characterized. The presence of annealing twins in the microstructure indicates that the high tin bronze was hot worked at high temperatures. The surface scales consisted essentially of Cu 2 O and Sn 3 O 4 , with Cu 2 O appearing as needles and Sn 3 O 4 appearing faceted. The Sn 3 O 4 oxide was the major constituent of the outer scale. The region in between the outer Sn 3 O 4 oxide was composed of Cu 2 O and Sn 3 O 4 . The inner scale was rich in Cu 2 O. The oxide nature has been explained by considering destannification of bronze. The destannification of bronze was further proved by composition profiling the cross section of the underlying alloy.
Databáze: OpenAIRE