The World's Most Refractory Metal Tungsten and The Most Refractory Materials Containing Niobium Carbides and Nitrides

It is well known that tungsten (W) is the purest metal with the highest melting point in the world (meaning it is the most difficult to melt), and its melting point is 3156.85 Kelvin (3430 ° C). At present, the most refractory material in the world is a powder mixture of bismuth-containing carbides and nitrides, which has a melting point of 4400 Kelvin (4126.85 ° C). This was synthesized a few days ago by Russian Far Eastern Federal University and the Far Eastern Branch of the Russian Academy of Sciences under extreme conditions. This high-temperature functional material will be mainly used in cutting-edge fields such as national defense, aerospace, electronic information, energy, chemical, metallurgical and nuclear industries, and has a good application prospect. According to the news released by the Russian Far Eastern Federal University, the next step in the research is to optimize the synthesis of the material and to study the solid phase transition process. Prior to this, the world's most refractory material was the five-carbon tetrakis (Ta4HfC5), which had a melting point of 4,200 Kelvin (3926.85 ° C).

This kind of bismuth carbide and nitride powder mixture material can be said to be "side shoulders with the sun"! The surface temperature of the sun is 5770 Kelvin (5496.85 ° C). Fortunately, after the shooting, the day is not completely destroyed, but also left a sun for us, otherwise, how can "fly to the sky" and "shoulder shoulders with the sun."

In other words, the powder mixture material was obtained by a pulse flame sintering method by a research team of the Institute of Atomic Energy of the Natural Science Institute of the Russian Far Eastern Federal University and the Institute of Chemistry of the Far Eastern Branch of the Russian Academy of Sciences. The Institute of Atomic Energy of the Russian Federation of Natural Sciences of the Far Eastern Federal University was established in 2016, specializing in new materials research in the fields of military, aerospace, biomedical, nuclear waste safe treatment, and ecological environment monitoring.

As you can see here, you know that the most refractory materials in the world are still in the research stage, and there is still a long way to go before they can be applied or applied. Therefore, we still know more about the "most difficult to melt metal tungsten" that has been spread all over our lives. So, what are the applications of tungsten? Tungsten is widely used in aerospace, technology, military, electronics, mining, metallurgy, machinery, construction, transportation, chemical, light industry and textile industries. This involves the formation of pure metal tungsten, tungsten alloys, tungsten compounds (tungsten oxide, sodium tungstate, tungstic acid, tungsten disulfide, etc.), etc., covering tungsten products and tungsten intermediate products. In general, tungsten can be used to make firearms, drill bits, wire drawing dies, counterweights, armor-piercing projectiles, turbine impellers, radiation shields, electric vacuum lighting materials, metal cutting blades, switch contact materials, aero engine valves, Rocket thruster nozzles and more.

Research is to cross a mountain. After countless experiments, failures and successes have finally succeeded. "One generation of materials, one generation of equipment. Without this material, even if your design is good, the material performance cannot keep up, it cannot meet the specific application." This is scientific research. I hope that China will be able to produce world-leading refractory metal materials in the future!

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