Zirconium diboride is a hexagonal crystal form, and its metalloid structure determines that zirconium diboride has good conductivity and mobility

Nano metals have poor stability due to the introduction of a large number of grain boundaries. Generally speaking, the growth temperature of nanocrystalline grains is much lower than the recrystallization temperature of coarse crystals, and some nanocrystalline pure metals grow up even at room temperature. Poor stability has become a significant bottleneck restricting the preparation and application of nanometals. The traditional method of stabilizing nanocrystals is mainly to reduce the interfacial energy or drag the grain boundary migration through alloying.

According to market research institutions, the 3D printing market will reach USD 55 billion by 2029, which is consistent with the 3D printing market's goal of accounting for approximately 2% of the global manufacturing industry's market value of USD 12 trillion in 2030. Such a vast market space has attracted the attention of many investors. It is easy to find that the pioneers in the industry are jointly painting a brilliant new picture of the 3D printing industry. In the next few years, to better meet the actual needs of users in various industries, the speed of 3D printing technology will be further accelerated, and new application models will blossom.

According to reports, researchers from Texas A & M University and AFR have developed a technology for defect-free 3D printing of martensitic steel parts. Compared with similar steels, martensitic steels are more reliable and more cost-effective and are used in aerospace, automotive, and defense industries.

Graphite, also known as multilayer graphene, is made up of layers of carbon atoms, each just one bit thick, and its structure determines its superior properties. When graphite sheets are reduced to only a few layers of graphene, essential features such as the total surface area per unit mass of the material and the mechanical properties of the sheet are greatly improved. In other words, graphene is more than just a thin layer of graphite. Unfortunately, many graphene manufacturers don't seem to know the difference or don't care. Kaling et al. .published a systematic study of graphene sold by 60 manufacturers in the journal advanced materials ，and found that many expensive graphene products were fakes made from graphite powder.What would the world be like if everyone could sell antibiotics without following quality standards and laws? Not only are the potential side effects worrisome, but the efficacy is questionable, and even potentially deadly, so many people are deterred from taking antibiotics. Emerging nanomaterials like graphene may not be dangerous, but the lack of industry standards has had equally unacceptable consequences.

Cadmium telluride thin-film solar cells are much cheaper to produce than crystalline silicon and other materials used in solar cell technology. Standard process, low energy consumption, after the end of the life cycle, recyclable, strong and weak light can be generated, the higher the temperature, the better the performance. With these advantages, CdTe thin-film Solar cells have begun to challenge conventional crystalline silicon Solar cells in the global market share. However, cadmium telluride solar cells still have some drawbacks of their own.

The physical properties of the 16 groups of elements in the periodic table change rapidly from top to bottom. Oxygen, of course, is a gas; polonium is a metal, but the ingredients in between, sulfur, selenium, and tellurium, are reliable, with their metallic properties enhanced in turn. I think tellurium (Te) is the most exciting element in this group, and its features are remarkably similar to those of most metals.

Lanthanum stearate is a new type of polyvinyl chloride (PVC) thermal stabilizer that replaces metal soap salts. The traditional method of synthesizing lanthanum stearate is a metathesis reaction method. The product obtained by this method contains inorganic salt impurities. To disperse stearic acid and sodium stearate, a large amount of water is used as a solvent, so the equipment is large, the energy consumption is high, and the water consumption is high. So is there a way to directly synthesize lanthanum stearate? This article will explore the feasibility of directly integrating lanthanum stearate. The oxide used in the experiment is lanthanum oxide (La2O3). To prevent the product from containing chloride ions, so as not to catalyze the decomposition of PVC, nitric acid was selected when the acid was dissolved. To overcome the disadvantage of stearic acid being insoluble in water, a small amount of ethanol was used as a solvent. Considering that many factors are affecting the synthesis process, to reduce the number of experiments and obtain the most suitable process conditions, an orthogonal experiment method is used.