stivali ugg In the 21st century aerospace technolo

In the 21st century aerospace technology development with the basic materials - (Ⅱ) advanced gas turbine engine materials with high heat

) 8 conclusions have transformed the field of materials science and technology achievements, the development of new materials and new technology, its next-generation aircraft and engines are widely used in the promotion of advanced non-destructive testing methods, develop quality control system. The establishment and operation can be competitive in the 2l century aviation technology and equipment. Research and Application 1) Metallurgical Research Institute Cove bus developed by the ultimate strength 3ooor ~ a (relative elongation 14%) of the new ultra high strength steel. 2) Jacques. 36 VTOL type aircraft fuselage is made of aluminum. Lithium Taijin made. 3) The latest improved version of the MiG-29 airframe and pilot cockpit is made of aluminum. Lithium Taijin made. 4) The United States, \Lithium alloy. People said the U.S. assessment pound homes,[link widoczny dla zalogowanych], instead of aluminum. After lithium alloy, the quality of the fuel tank to reduce the 890kg 620kg. 5) VlAM add to the BT22 alloy of tin and wrong after the change in composition of the alloy is Ti. 5Al-5Mo · 5V a 1Fe. 1Cr-17Sn-2.5Zr, the room temperature strength, high temperature strength and fatigue strength than BT3.1 and BT6 alloy increased 150/r-20%. Add a zirconium alloy of tin and was named BT37. The alloy can be maintained at 400 ℃ heat resistant strength of 900MPa-950MPa, purpose is to create turbine disk and blades. 6) with intermetallic strengthening of BT22 alloy: alloy added to the O. 25C, and O. 20B after the ultimate strength at room temperature increased to 1320MPa, the relative elongation of 86o / 0, area reduction rate of 286%, 450 \(Continued) dysprosium metal materials of production and application of Lin He Wei (Beijing Nonferrous Metallurgy Design Institute,[link widoczny dla zalogowanych], Beijing 100038) mid-80s, China's production level of industrialization gradually dysprosium, current production capacity, production, production technology and the market has made great achievement, and in the world advanced level,[link widoczny dla zalogowanych], according to reports, China has rich mineral resources, dysprosium, dysprosium resources the country about 4.5 million \Ionic current in the high yttrium concentrate (including REO ≥ 9) containing Dy2Oj up to 7.48% which for our country to develop the production of dysprosium metal functional materials and to promote the progress of high-tech, laid a solid foundation. Dy resources from the world, China's resources in the world and first in dysprosium. l material present, China produces metal dysprosium (Dv) of the main raw materials are the following: First, dysprosium oxide (Ib-2o;), the concentrate from the ionic products after the separation, the purity of 99% -9995%. Rare earth impurities was 01% 005 ‰ for the 03% of non-rare earth impurities. 03 states primarily Fe2Oj'SiO2 and Ca0): Second, dysprosium fluoride (DyF,), which consists of dysprosium oxide 0) y) or chlorinated Dy (Dy.C13) made a purity REO80% - 82%, DyzOl99% J995%, rare earth impurities was 0.1% m05%, 32% of non-rare earth impurities - 0.5% (mainly Fe2O,[link widoczny dla zalogowanych],, CaO, MgO, sO: and HzO), F is 24%. The two raw materials have reached industrial production. 2 technology and equipment of the production of metal dysprosium has l0 years, expanding its production scale. The main production process for the metal thermal reduction method, which includes thermal reduction of calcium,[link widoczny dla zalogowanych], in the middle Taijin distillation method and the reduction. But the commonly used thermal reduction of calcium, the current production of this product dysprosium about 80% of total output. Thermal reduction of calcium in the production of dysprosium Dysprosium fluoride as the raw material (including Dy_, O399% or 999%), metal N (Ca) chips as a reducing agent. Ingredients and put into the crucible and placed in a vacuum induction furnace ae (under the protection of argon gas) can be obtained to restore dysprosium metal products. The main process of the original ingredients of a Branch of a loaded furnace slag an ingot of a reduction of a package of a warehouse. Major equipment for the aluminum or tantalum crucible, vacuum induction furnace or vacuum resistance furnace, ingot molds and packaging machines manufactured between alloying with dysprosium dysprosium fluoride (Ib'F3) as raw materials, calcium as reducing agent, magnesium alloy agent adding calcium chloride to generate low melting point slag. After the ingredients into the vertical tube by reducing the furnace, in the 950 \First made after the Dy-Mg master alloy, and then vacuum distillation to remove magnesium and calcium can be obtained by metal dysprosium (tb990 / o). The main process equipment for the raw material for a furnace of a calcium ingredient to restore a slag of a vacuum distillation of a DyMg addition of magnesium alloy, an ingot of a package of a calcium storage. 2001 s 5 of the Metal Bulletin

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