Molybdenum Disc: High-Performance Industrial Thin Material of Refractory Metal Molybdenum
As a typical precision-engineered product of the refractory metal molybdenum, the molybdenum disc (Molybdenum Sheet) is a circular thin sheet manufactured from high-purity molybdenum powder with a purity not less than 99.7%, through performance modulation via specific additives and forming processes. Its production strictly adheres to dimensional tolerance standards, with flatness typically controlled within ≤3%. Both diameter and thickness can be customized to match application requirements. In terms of appearance, the raw molybdenum sheet exhibits a dark brown color, transforming into a silvery-gray metallic luster after alkaline cleaning surface treatment. The surface must meet quality requirements such as being free from cracks, delamination, slag inclusions, and edge defects, ensuring its reliability in extreme environments.
From a materials science perspective, molybdenum discs demonstrate a series of outstanding physical and chemical properties: a melting point as high as 2620°C, a density of 10.2 g/cm³, and a Mohs hardness ranging between 5 and 5.5. More critically, this material simultaneously possesses a balanced combination of low thermal expansion coefficient, low electrical resistivity, and high thermal conductivity. It also exhibits excellent high-temperature creep resistance and chemical stability, showing strong corrosion resistance to most acidic and alkaline media. This comprehensive performance profile renders it irreplaceable under high-temperature and high-pressure operating conditions.
Current industrial production primarily relies on two mature process routes: First, the powder metallurgy method, which involves uniformly mixing molybdenum powder with alloying elements, followed by hot-press forming and high-temperature sintering for densification. Second, the hot-rolling method, where molybdenum billets are heated to a plastic state in a protective atmosphere for rolling and elongation. This is followed by precisely controlled annealing processes to relieve stress, culminating in alkaline cleaning to obtain a product with a clean surface. Both processes require precise control of grain orientation and impurity content to ensure consistent product performance.
Leveraging its unique combination of properties, molybdenum discs have become a key foundational material in high-end manufacturing sectors. In the crystal growth field, they are machined into radiation shields and insulation cover plates inside sapphire crystal growth furnaces. In vacuum heat treatment equipment, they serve as heating strips, radiation shields, and high-temperature-resistant connectors. In surface engineering, high-purity molybdenum sheets can be fabricated into magnetron sputtering targets. Simultaneously, they can be processed into specialized tooling components such as high-temperature boats and support frames. The depth of their application is directly linked to the technological level of related industries.
With the iterative development of the semiconductor industry, photovoltaic technology, and new display sectors, increasingly stringent requirements are being placed on the dimensional accuracy, high-temperature stability, and purity indices of molybdenum discs. Future technological advancements will focus on breakthroughs in rolling processes for ultra-large-format thin sheets, the application of nanoscale surface treatment technologies, and research into micro-alloying modifications for specific operating conditions. As a critical industrial material, the continuous innovation of molybdenum discs is destined to propel high-end equipment manufacturing toward higher temperatures and more precise control.
Molybdenum foils are demanded 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.
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