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periodic table of the elements

periodic table of the elements

The periodic law of elements in modern chemistry was initiated by Dmitri Mendeleev, a Russian scientist in 1869. He arranged 63 known elements according to atomic weight and in the form of a table, and put elements with similar chemical properties on the same line, which is the prototype of the periodic table of elements.
Effect of preparation process control on properties of zirconium powder

Effect of preparation process control on properties of zirconium powder

Ultrafine zirconium powder was prepared by high purity sponge zirconium, high purity hydrogen deep hydrogenation and gradient dehydrogenation.
Application and characteristics of Superalloy in various parts of turbine engine

Application and characteristics of Superalloy in various parts of turbine engine

Due to the complex structure of gas turbine, the temperature and stress of each part are quite different, so the requirements and selection of materials are different.
Research status of strengthening mechanism of rhenium in single crystal superalloy

Research status of strengthening mechanism of rhenium in single crystal superalloy

Nickel base single crystal superalloy has high temperature bearing capacity and good comprehensive properties. It is considered to be the most promising material for advanced aviation turbine engine blades.
Application status and manufacturing technology of rhenium and rhenium alloys

Application status and manufacturing technology of rhenium and rhenium alloys

Rhenium is a rare refractory metal with high melting point, high strength, good plasticity and excellent mechanical stability. Its melting point is second only to tungsten, up to 3180 ℃. Rhenium has no brittle critical transition temperature. Rhenium has good creep resistance under high temperature, rapid cooling and rapid heating conditions. It is suitable for ultra-high temperature and strong thermal shock working environment.