The sword body is a black diamond geometric pattern, and the front and back of the sword lattice are inlaid with blue glass and turquoise exquisite patterns respectively. The hilt of the sword is bound with silk thread, and the head of the sword is turned into a hoop, in which a very fine concentric circle of 1 1 is cast.
When the sword of the King of Yue came out of its sheath, it was cold and sharp, and there was no rust. Twenty layers of copy paper, swished by the sword all cut from the middle.
A Gu Jian, buried in the ground for more than 2000 years, has no rust and is extremely sharp. This discovery immediately caused a sensation in the whole country and even the whole world.
What makes many people curious is why the sword of Yue King has been so sharp and stainless for thousands of years. What is the reason?
The researchers made a proton X-ray fluorescence non-vacuum analysis of this sword, and found that the black pattern on the surface of the sword contained 0.5% sulfur, and the surface of the sword lattice contained 0.9% ~ 5.9% sulfur. Therefore, some people think that the reason why the sword of the King of Yue has not rusted for thousands of years is that the body of the sword is vulcanized.
But some researchers have given a negative answer.
First of all, copper sulfide is a material with loose structure. When using a sword, people's fingers will often touch the lattice of the sword, so that copper sulfide will be wiped off quickly. In this case, is it necessary to vulcanize? Moreover, the sword of the King of Yue did not rust absolutely when it was unearthed, but the degree of rust was very slight, and it has been kept in a capsule since it was unearthed. However, the surface of the sword is not as bright as when it was first unearthed.
At the same time, the spear of Fu Cha, the king of Wu, was covered with green rust when unearthed. This shows that the reason why Yue Wang's sword has not rusted for thousands of years has little to do with its own factors.
During the Spring and Autumn Period and the Warring States Period, there will be a large number of funerary objects in the tombs of rulers. After the body, silk clothes, food, etc. Rot will produce a considerable amount of sulfide. Maybe this is the source of the sword and sulfur of the King of Yue.
Through modern scientific and technological tests, it is found that the content of copper in the sword is about 80% ~ 83%, the content of tin is about 16% ~ 17%, and there is a small amount of lead and iron.
As the main component of bronze sword, copper is an inert metal, which is not easy to rust under normal circumstances.
Secondly, the sword of the King of Yue is buried deep underground, with one coffin and two coffins, which are nested layer by layer. A layer of fine white mud is filled around the coffin chamber, and the lower part of the coffin chamber is artificially washed white paste mud, which is more dense. The upper part of the tomb pit is filled with compacted soil, making the tomb a closed space.
When the sword is unearthed, it is inserted in a painted wooden sheath, so it is not easy to oxidize when it comes into contact with air.
In addition, the tomb is located on the second main canal of Zhanghe River near Jingzhou, with a high groundwater level. The tomb has been immersed in underground water for a long time, and the underground water is basically neutral without acid or alkali. Under the immersion of groundwater, the air content in the tomb is less.
To sum up, the sword of the King of Yue, with a history of more than 2,000 years ago, is still extremely sharp and is a rare treasure among the short bronze weapons in China. ...