A Set of bronze sculpture statue of Ming Dynasty
Bronze ware has an excellent historical value, artistic value and scientific
value. However, owning to the fact that it has been buried under ground for a
long time as well as the limitation of storage constraints after being
unearthed, ancient bronze ware faces a severe problem of corrosion protection.
Transition period of the bronze
sculpture statue generally refers to the period between
the late Warring States and late Qin and Han Dynasty. The corrosion of bronze
ware is briefly reviewed, the research methods, corrosion mechanism and
protection methods of bronze ware are deeply described. Finally, research trends
in the protections of the bronzes are analyzed.
Unearthed bronze relics often
buried in the ground before a few hundred or even thousands of years, will have
varying degrees of damage and corrosion, bronze disease is the most harmful of
which a special kind of corrosion. The traditional ritual system has been
complete collapsed resulting in the disappearance of the bronze sculpture
statue. Once infected with bronze
statue disease, its spread and development will be
difficult to control, ranging from the surface caused by the bronze
inscriptions, patterns and other important historical archaeological heritage
value of the information is destroyed leaving serious damage. Perforated ulcers
while in the objects or even complete disintegration. So. Corrosion of bronze in
the study, based on the principles, how to conduct scientific bronze relics
protection an important issue currently facing.
Bronze is an alloy, the main
ingredient is copper, tin, lead, and contains very small amounts of iron,
nickel, zinc, manganese, silicon, arsenic and phosphorus. Chinese Bronze Age
bronze artifacts, the composition of tin bronze and lead bronze main '21. From
the thermodynamic point of view, this component determines the energy position
of the metallic bronze will eventually be spontaneously converted to low-energy
position of the compound state of ore, that is, that bronze corrosion is a
natural, spontaneous process. In this stage, the role of the bronze sculpture
statue played in the society started to decline little by little. Relatively
suitable conditions (such as low temperature, low humidity, no UV irradiation,
no harmful gases, etc.), the bronze corrosion layers generally remained
stable.
If the environment changes, especially by the temperature, humidity,
very prone to rust and bronze powder. FITZGERALD and others on the atmospheric
corrosion of copper in different regions were studied, the impact that the
external environment is an important factor leading to corrosion of chinese
bronze. Most vessels are classified to daily bronze
sculpture statue. Therefore, the bronze artifacts unearthed by the hypoxic
environment before entering the oxygen-rich environment unearthed after this
change is the main reason leading to corrosion. Bronze artifacts unearthed a
large number of surface corrosion products usually attached to these harmful
rust corrosion products can be divided into two major categories of rust and
harmless.
Harmless rust can increase the artistic value of bronze artifacts,
and to play a protective role. Rust is harmless bronze buried by flooding and
erosion of the atmosphere, the bronze surface changes, which form the protective
layer, so that artifacts can not continue to suffer corrosion. But if narrow it
down to certain bronze sculpture statue, there were quite a few fancy artworks.
Its chemical composition includes black copper oxide (CuO), the red cuprous
oxide (Cu: O), green or blue-green basic copper carbonate (green copper CuC03 ?
Cu (OH) 2, azurite 2CuC03 ? Cu (OH) 2), sometimes mixed with black copper
sulfide (CuS), white tin oxides. These are china
bronze rust in a stable, rich colors, the composition of
the formation of fine old spot.
related bronze sculpture statue：
chinese
bronze
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