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青铜文物保护是文物界极为重视的工作,在对粉状锈产生机理研究的基础上,文献[3]指出,含锡量较高的铜镜类文物,受粉状锈侵蚀很轻,而含锡量偏低的钟鼎类文物,受粉状锈腐蚀严重,文献[4]也得到同样的结论.但从热力学考虑,低含锡量的α相青铜合金比高含锡量的β’和δ相稳定.所以青铜合金成分与粉状锈生成之间是否存有内在联系是值得探讨的一个重要问题,本文对青铜合金成分与电化学极化曲线的阳极行为作些探讨.
The protection of bronze cultural relics is a work of great concern to the cultural relics industry. Based on the study of the mechanism of the occurrence of powdery rust, Literature [3] pointed out that bronze mirrors with high tin content are very eroded by powdery rust and contain The Zhongding relics with low tin content are seriously corroded by powder rust, and the same conclusion has been reached in reference [4], but from the viewpoint of thermodynamics, the low-content α-phase bronze alloy has a higher tin content than β ’ δ phase is stable.Therefore, it is worth to discuss whether there is an intrinsic relationship between the composition of bronze alloy and the formation of powdery rust.This paper discusses the composition of the bronze alloy and the electrochemical behavior of the electrochemical polarization curves.