Molybdenum Silicide refers to a specific type of molybdenum compound. As the radii of both atoms don’t differ much, its electronegativity has similar properties to metal and ceramic. It can melt to a temperature up to 2030°C. A silicon dioxide passivation film can form on the surface at elevated temperatures to stop further oxidation. Its gray metal appearance comes from the presence of a tetragonal-type crystal. Also, the hexagonal structure is instabile. The -modified crystal structures. This is insoluble even in the most acidic ones.
MoSi -2 has high-temperature properties. This is due to excellent metal and ceramic properties. It’s hard and has an excellent melting point. Recently, this material has gained much attention. Particularly in those fields in which metal and ceramics may be difficult, applications at high temperatures show remarkable vitality.
Molybdenum Silicide is an intrametallic compound. Mo and Si have an atomic radius similar to each other, which means that their electronegativity can be very close. This makes them form a Daltnide, intermetallic compound, with a precise chemical distribution ratio. Below 1900 you can find the C11 or btype, ordered square-center structure. It’s a stable room temperature structure that is constructed by stacking 3 cubic heart-shaped cells along the C-axis direction. In which the Mo atoms reside at the centre node and 8 apex angles. Si The atom can also be located in other node positions, from 1900 until the melting point C40 hexagonal structure which is metastable. C40 structures have a similar arrangement to C11; however, the C40 order of stacking is ABCABC for C40, rather than the ABC of C11 _. MoSi 2 experiments with a = = 0.3202nm, and c= 0.7843nm.
Molybdenum Silicide is a metaphase with the highest concentration of silicon in Mo-Si’s binary alloy. The melting temperature is high at 2030°C. There is a 45W/mK thermal conductivity. You can use it for electric discharge machining. MoSi 2 shows the R’ characteristic. That is, its strength does not change with temperature.
Molybdenum Silicide is a high heat material, with outstanding properties. This silicium has the dual characteristics both of ceramics and metal. Molybdenum Silicide’s most common use in industry is to manufacture heating elements. You can divide electrothermal substances into non-metal or metal. The two most common metals used in electrothermal applications are iron-aluminum and nickel-chromium alloys. These non-metal thermothermal materials consist mainly of silicon carbide. Zirconia. Molybdenum Silicide. Materials made of non-metals can resist high temperatures and corrosion, as well as oxidation resistance. These materials are becoming more popular in heating elements. Continuous technical advancement has made the molybdenummolybdenum rod and molybdenumsilicide the most reliable heating element.
As science and technology advances, in particular in aerospace, advanced weaponry, electronics equipment and other fields, there are higher standards for the performance of materials. It must be able to work in high temperatures safely and reliably and is light. You will have high strength, creep resistance, excellent toughness, antioxidation and it won’t pollute the surrounding environment. The steam turbine’s quasi-replacement performance and that of the space shuttle must be improved. To do this, the temperature has to rise. It is therefore urgent to find structural materials that are able to handle temperatures exceeding 1773°C. It is difficult to improve the melting point of superalloys based on nickel. This limit means that they cannot be used as aerospace structural material. Engineered ceramics may also prove difficult due to poor thermal conductivity, processing difficulties, and other limitations. It is no surprise that intermetallic materials with exceptional performances have become an increasingly popular research area. MoSi 2 is a highly-valued intermetallic compound because of its very high melting points, relative low density, high resistance to heat oxidation and many other excellent properties including mechanics and electricity.