High-performance metal ceramics
Molybdenum sheets, which are thin circular products made of metallic molybdenum or molybdenum alloys, are hailed as the "high-performance metal ceramics" in the industrial field. They are not ordinary metal sheets; instead, they are key materials that combine high melting point, excellent thermal conductivity, low thermal expansion coefficient, and good structural strength. These characteristics enable them to remain stable in extremely harsh environments, thus becoming indispensable basic components in modern high-tech industries, especially in electronics, semiconductors, and high-temperature industries.
The production of high-quality molybdenum round pieces begins with high-purity molybdenum powder. Using the powder metallurgy process, the molybdenum powder is placed in a mold and subjected to extremely high pressure through isostatic pressing technology, which transforms it into a "molybdenum billet" with an initial shape and strength. This step is crucial as it determines the density and uniformity of the internal structure of the round piece. Any slight density inconsistency could lead to cracks or deformation during subsequent processing.
The strength of the obtained molybdenum billet is very low. Therefore, it needs to be subjected to high-temperature sintering to impart its metallic properties. In a high-temperature sintering furnace with hydrogen protection atmosphere, the molybdenum billet is heated to a temperature close to its melting point. The powder particles are firmly bonded together through atomic diffusion, forming a dense metallic structure. To further enhance the density and mechanical properties of the material, the sintered molybdenum billet is usually subjected to forging or rolling to break the internal residual pores and refine the grains, laying the foundation for subsequent rolling into thin sheets.
The forged thick plates need to undergo multiple passes of cold rolling or warm rolling to gradually reduce their thickness to the target size. Molybdenum is a hard and brittle material, and during the rolling process, it undergoes work hardening. Therefore, after a certain degree of deformation, intermediate annealing treatment is required. Annealing involves heating the material to a temperature above the recrystallization point in a protective atmosphere to eliminate internal stress, restore its plasticity and toughness. This "rolling-annealing" cycle process is precisely controlled to ensure that the molybdenum sheets do not develop defects while being thinned.
After being rolled to a size close to the target size, the molybdenum sheet needs to undergo fine grinding and polishing to meet the precise thickness and flatness requirements. Subsequently, it is processed into the final circular shape using precise wire cutting or stamping technology. For applications such as semiconductors, the surface needs to reach a mirror-like or ultra-smooth state. Finally, after undergoing strict cleaning and packaging, the product is delivered to the customer in a pollution-free condition.
In the semiconductor industry, molybdenum wafers are mainly used to manufacture the key components of semiconductor manufacturing equipment. Due to their heat resistance and corrosion resistance, they are widely used as heating elements in diffusion furnaces and sintering furnaces, as well as heat insulation screens and trays for supporting silicon wafers during high-temperature processing. Moreover, it is also an ideal heat dissipation substrate and electrode for high-power semiconductor devices such as thyristors and rectifiers, which can effectively conduct the heat generated by the chips.
In high-temperature vacuum furnaces, sapphire crystal growth furnaces and the photovoltaic field, molybdenum sheets serve as insulation covers, support gaskets and heating component parts, providing dimensional stability and long lifespan under high-temperature conditions. In solar thin-film batteries (such as CIGS), it can be used as a substrate or back electrode material. At the same time, it is also the basic material for key components in electronic vacuum devices such as lasers and microwave tubes.
In conclusion, the production of molybdenum discs is a highly precise manufacturing process that integrates powder metallurgy, plastic processing, and heat treatment technologies. Its unique properties have enabled it to play an unassuming but crucial role in promoting the development of industries such as semiconductors, new energy, and advanced manufacturing. In the future, as the progress of the third-generation semiconductors, new display technologies, and aerospace industries continue, the demand for higher purity, larger sizes, and more complex functions of molybdenum discs will undoubtedly continue to grow, driving the production process of molybdenum discs towards more refined and intelligent directions.
Molybdenum Disc is in demand in various parts of the world, such as: USA, Canada, Chile, Brazil, Argentina, Colombia, Germany, France, United Kingdom, Italy, Sweden, Austria, Netherlands, Belgium, Switzerland, Spain, Czech Republic, Poland.
As professional Chinese manufacturer, Mosten Alloy can produce and supply molybdenum electrode, molybdenum strip, molybdenum sheet, molybdenum pellet, molybdenum block, molybdenum tube, molybdenum rod, molybdenum wire, molybdenum processing workpiece according to customer demand. If you have any questions, please send email to info@mostenalloy.com.
