Yanshan University successfully synthesized nanocrystalline germanium cubic boron nitride material

On the 21st, a reporter learned from the Department of Science and Technology under the Hebei Provincial Department of Education that Yanshan University recently achieved a breakthrough by successfully synthesizing a new nanostructured cubic boron nitride (CBN) material. This innovative material is expected to revolutionize the tool materials used in the steel industry due to its exceptional properties. According to an official from the Department of Science and Technology, scientists led by Professor Tian Yongjun from Yanshan University's State Key Laboratory of Metastable Materials Preparation Technology and Science have been working on this project for years. Supported by funding from the U.S. National Natural Science Foundation, they developed a novel method using boron nitride nanoparticles with a Russian matryoshka-like crystal structure. By applying high-temperature and high-pressure techniques, they created a new form of nano-crystalline cubic boron nitride. This newly developed material exhibits remarkable characteristics. Its hardness surpasses that of diamond single crystals, while its toughness exceeds commercial cemented carbide. Additionally, it has a higher oxidation temperature than traditional cubic boron nitride. These properties make it a promising candidate for next-generation cutting tools in the steel processing industry, with vast potential for future applications. In addition, researchers discovered that nano twinning CBN can maintain its hardness even when the twin thickness decreases to 4 nm, without experiencing softening. This finding challenges conventional understanding of polycrystalline material hardening mechanisms and opens new pathways for developing ultra-hard materials with superior performance. The research was recently published in the prestigious journal *Nature*, which highlighted the achievement as an "excellent superhard material" and noted that the new material could lead to wide-ranging industrial applications. Over the past decade, Professor Tian Yongjun has received continuous support from various national science projects, including the National Outstanding Young Scientists Fund, key research initiatives, and innovation groups, enabling this groundbreaking discovery. (Qi Leijie, Reporter) Tags: Cubic Boron Nitride, Nano Material, Tian Yongjun, Yanshan University, Superhard Material

Capsule House

Why are all the scenic spots using space capsules house?
The tourism industry is developing very fast, and the same attractions have no characteristics, and it is also difficult to attract consumers. In fact, many scenic spots have begun to use space capsules. This kind of architectural design is unique, and the price is very favorable, and the construction efficiency is high. It can be constructed according to our needs immediately. So what are the advantages of such a building? Why are attractions in use?

removable design
Space capsules house are generally made of steel, etc., and do not need to lay foundations, do not require land approval, can ensure that the construction is pollution-free, and the construction efficiency is also guaranteed. Moreover, it is generally possible to carry out mobile design directly, so that only need to design and construct according to the needs, the use of the building is also guaranteed, and it is very convenient to move and use at any time.

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Because the design style of this kind of building is unique, it is completely different from ordinary prefabricated houses, and it can also be painted and designed on the surface. Basically, after the construction of this kind of building is completed, it will immediately become a landmark building of the scenic spot, and it has a cosmic atmosphere, so everyone still likes it very much. Distinctive design is also important if you want to attract tourists.

long lasting
The construction of the space capsule house is simple, and its service life is relatively long, because it is made of light steel structure, the wall panels are made of aluminum alloy panels, and three layers of insulating glass, so as long as you can buy high-quality materials, then its use The lifespan can reach more than several decades. Its material has strong corrosion resistance, and is windproof, fireproof, etc., and its practicality is also very guaranteed. Buildings with high safety factors and favorable prices are also worth choosing.

discount price
Because each scenic spot may have a time limit for decoration, it is also necessary to pay attention to the budget. The construction of the space capsule is very simple, and the design can be completed according to the needs, and its construction cost is also very favorable. Moreover, it can be constructed quickly, put into use immediately, and will not generate any construction waste, etc. The cost-effective building is also very suitable for various scenic spots.

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