Molybdenum alloys
Molybdenum alloy, in 1910 has started to use powder metallurgy process to produce molybdenum products. Until 1945, the powder metallurgy process had been the only industrial method of producing molybdenum sheets, silk and bars. Non-ferrous alloys formed by adding other elements to molybdenum matrix. The main alloying elements are titanium, zirconium, crucible, tungsten and rare earth elements.
Molybdenum alloy is a non-ferrous alloy composed of molybdenum as matrix and other elements. The main alloying elements are titanium, zirconium, crucible, tungsten and rare earth elements. titanium, zirconium and thallium elements not only play a solid solution strengthening role on the molybdenum alloy, maintain the low temperature plasticity of the alloy, but also form a stable and dispersed carbide phase, and increase the strength and recrystallization temperature of the alloy. Molybdenum alloys have good thermal conductivity, conductivity and low expansion coefficient, and have high strength at high temperature (1100~1650℃), which is easier to process than tungsten. It can be used as gate and anode of electronic tube, supporting material of electro-optic source, as well as for making die casting and extrusion die, parts of spacecraft, etc. Because molybdenum alloy has low temperature brittleness and welding brittleness, and high temperature is easy to oxidize, its development is limited. The industrial molybdenum alloys are molybdenum titanium zirconium series, molybdenum tungsten series and molybdenum rare earth series alloys. the main strengthening pathways of molybdenum alloys are solid solution strengthening, precipitation strengthening and work hardening. The molybdenum alloy sheet, strip, foil, pipe, bar, wire and profile can be prepared by plastic processing, which can also improve its strength and low temperature plasticity.
alloys consisting of other elements based on molybdenum. Molybdenum and its alloys have good thermal conductivity, conductivity and low expansion coefficient (similar to the glass of the electronic tube) in refractory metals, high strength at high temperatures (1100~1650℃), easy to process compared to tungsten, and are thus used in the manufacturing sector of electronic tubes (gate and anode), electro-optic sources (supporting materials), metal processing tools (die-casting and extrusion dies and perforated heads) and in the aerospace industry. Molybdenum can resist the erosion of molten glass, and its oxide will not contaminate the glass. since 1943, molybdenum has been used in the glass industry as a heating electrode. Mo-30W alloy has excellent resistance to melting zinc corrosion and has been successfully applied in zinc smelting industry. Molybdenum is also used to make components such as heat exchangers and valves in sulfuric acid production.
