Product Information:
U-shaped molybdenum disilicide (MoSi₂) rods are cermet heating elements made from high-purity molybdenum disilicide powder through extrusion, vacuum high-temperature sintering. The element features an integral U-shaped structure formed by two equal-diameter rods and a bottom bridge, with a naturally curved transition at the top created by a cold bending process. The heating section and the lead-out ends have the same diameter, and the surface is dense and smooth. In high-temperature oxidizing atmospheres, a dense quartz glass protective film forms on the surface, providing excellent resistance to high-temperature oxidation. The lead-out ends are made of pure molybdenum disilicide and are typically connected using metal clamps, ensuring reliable electrical connection and easy replacement and maintenance.
Performance Parameters:
MoSi₂ Content: ≥99.5%; Apparent Porosity: <1%; Thermal Expansion Coefficient: approx. 7.5×10⁻⁶/°C; Bulk Density: 5.5–5.8 g/cm³; Flexural Strength at Room Temperature: ≥300 MPa; Electrical Resistivity: approx. 0.25 Ω·cm at 20°C, approx. 4 Ω·cm at 1600°C, resistance value increases linearly with temperature rise; Maximum Operating Temperature: 1800°C; Suitable Atmospheres: air, nitrogen, argon and other oxidizing or neutral atmospheres; avoid long-term use in sulfur-containing, chlorine-containing, strongly reducing atmospheres and vacuum.
Product Dimensions:
Common diameter range: 3–30 mm; lead-out ends have the same diameter as the heating section. Manufacturable single-arm heating section length: approx. 200–1000 mm; the natural arc width of the bridge top can be customized according to furnace chamber dimensions. Orders are expressed as “Diameter × Single-arm Heating Length × Bridge Arc Width × Lead-out End Length.” Yuko Corporation can produce according to customer requirements and drawings.
Product Applications:
Widely used in tunnel kilns, shuttle kilns, dental sintering furnaces, high-temperature laboratory furnaces, special ceramic sintering furnaces, glass electric boosting, and other high-temperature equipment. As heating elements, they provide a stable and controllable high-temperature heat source for processes such as sintering and heat treatment under oxidizing atmospheres.