On the bronze relics protection 00,625,009 School of Economics, Yuhong Chen Keywords: bronze disease heritage conservation Abstract: This paper from the bronze of the composition and nature of the classification of bronze artifacts in terms of bronze and bronze are briefly introduced; after chemical analysis of the corrosion mechanism of bronze, has been corroded bronze chloride ion is the main factor leading to this conclusion; Finally several processing rusty bronze and methods for their protection, which focused on the alkaline sodium dithionite law, acetonitrile, sodium sesquicarbonate method, silver oxide method also briefly introduced. I. This imitation of bronze sculpture is made from bronze and has a good collecting value. Introduction With the rolling forward the wheel of history, human beings after the Stone Age, Bronze Age, Iron Age, until recently the rapid development of information technology “Neolithic.”
Which, by the Stone Age into the Bronze Age is a major leap in social development, regardless of the rapid development of social productive forces, or the progress of social consciousness, both of bronze statue smelting technologies emerge and mature dense one can not be separated. The original bronze sculpture was unearthed in Yandun Mountain of eastern suburb of Zhanjiang City in 1954.  Bronze Age in China, stretching 15 centuries of continuous, hard working people of the wisdom of our ancestors and left behind a legacy of numerous bronze, but some of the unearthed bronze after falling off a very serious corrosion, it also proposed to cultural workers An important task – to take good care of these precious cultural heritage. The following article will briefly in the introduction of bronze, chinese bronze focused analysis of the chemical mechanism of corrosion and various protection methods.
Second, the bronze profile in order to better study the corrosion process and protection methods, we should first understand the basic properties of bronze, and bronze artifacts unearthed some of China’s basic situation. The bronze sculptureimplies that the city of Zhenjiang is the fiefs of Duke of Yi in Kang Wang of Western Dynasty.  The composition and characteristics of bronze is a copper-bronze dragon alloy, that is copper-based, non-metallic elements or adding other metal elements consisting of metal materials. Traditionally divided into brass copper alloy, nickel alloy, bronze three categories, of which brass is an alloy of copper and zinc, copper-nickel alloy of copper and nickel alloys, in addition to brass, copper, copper-nickel alloys are outside of all known bronze. Speaking of copper alloy, without mentioning the copper, or copper. Naturally occurring elemental copper ore red, copper content up to 95%.
Since most of copper ore and other metal sound, so copper is also often contain small amounts of other metals. like to have a tin content of less than 2% lead content of less than 3% copper, are known as copper. So we can see that Zhenjiang has a history of bronze sculpture over 3000 years. Although copper can be made into a variety of instruments, but the hardness is poor, the casting process, not a good flow properties, but also to absorb the gas, cooling shrinkage is relatively large, can lead to defects and osteoporosis. Compared with copper, chinese bronze has many advantages. Its low melting point, hardness is high, and with good casting properties and mechanical properties. The melting point of pure copper 1083 ?, but if adding 15% tin, the melting point will be reduced to 960 ?; adding 25% tin, the melting point will be further reduced to about 800 ?.
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