| Summary: | 碩士 === 國立臺南藝術大學 === 博物館學與古物維護研究所 === 104 === The objects of this study are the tinware sacrificial vessels in temples. The author is interested in the objects because tinware items, which were commonly used in households a hundred years ago, are no longer in use in homes nowadays.
This study examines the tinware, the oldest of which dates back to 170 years ago and the newest of which dates back to 10 years ago, in seven temples in the Chianan area. It includes an analysis of the main constituents of the tinware vessels and their deterioration, a pictorial list of their deterioration, and a finding of the chief factors leading to their deterioration. The finding is based on the result of the salt spray test, the high humidity test, and the sulfur dioxide test on pure tin and 40/60 tin/lead alloy with plain, S-bend, and L-bend specimens.
According to the tests, the corrosion resistance of pure tin is better than the tin/lead alloy. In the high humidity test, purple and blue rust was found on all the specimens. In the salt spray test, white mist and black pitted rust were found on all the specimens. The responses of all the specimens were the most active in the sulfur dioxide test: black pitted rust and purple rust were found in all the specimens. On the third day, white pitted rust was found on the L-bend specimens of both pure tin and the tin/lead alloy. On the fourteenth day, more white pitted rust was found in all the specimens while yellow pitted rust was found on the S-bend specimen of the tin/lead alloy.
On the whole, the corrosion resistance of the L-bend specimens is the lowest because of their bending and welding, and that of the S-bend specimens is better than that of the plain specimens.
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