The Hardest Glass in The World Can Cut Diamonds

Diamond is considered one of the hardest materials in the world and is usually used to cut glass. But now that has changed, glass can also be used to cut diamonds! Recently, Professor Tian Yongjun's team of Yanshan University published a paper in the national scientific research review, saying that their team has developed a new glass material - am-iii, which is harder than diamond and is the hardest glass material in the world. The paper was published in the National Research Review on August 11.

The researchers said that the Vickers hardness of am-iii is 113 GPA, while the Vickers hardness of diamond is about 70 to 100 GPa, which makes am-iii the hardest material on the earth. It can be seen in the experiment that am-iii can easily leave a deep scratch on the surface of diamond. It is estimated that it is ten times harder than steel and 20 to 100 times stronger than most bulletproof glass.

In terms of physical structure, am-iii, like diamond, is composed of carbon atoms. The difference is that the atomic and molecular arrangement of diamond is a perfect lattice structure and belongs to crystal material. The atoms and molecules of am-iii are arranged irregularly, the structure is more chaotic, and it is amorphous. The crystal has a certain melting point, and the amorphous has no fixed melting point. With the increase of temperature, the amorphous will first become soft, then gradually change from thick to thin, and finally become a fluid. Therefore, am-iii is called a new type of glass material, but can not be called a new type of diamond material.

In terms of manufacturing methods, am-iii, like artificial diamonds, is manufactured by high temperature and high pressure. However, the physical properties are different. Diamonds cannot conduct electricity, but am-iii is an efficient semiconductor material with the characteristics of conductivity and high temperature resistance. If you want to manufacture photoelectric equipment with high strength and wear-resistant operation in extreme environment, there is no doubt that am-iii is a very ideal material.

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