Molybdenum copper material commonly used conventional powder metallurgy sintering infiltration was prepared

Molybdenum Copper is composed of two immiscible fake metal alloy, molybdenum, copper material density is low, and tungsten-copper material deformation processing more easily, these features make the material in the material requiring high quality aerospace, Portable equipment has good application prospects. For sealing molybdenum copper, its expansion coefficient difference with ceramic larger sealing surface near the greater the stress, the more likely porcelain burst. Therefore, to obtain a hermetic seal, sealing metal and ceramic must have close to the thermal  tungsten carbide ball  and a certain degree of plasticity. Mo-Cu materials generally used conventional method of powder metallurgy sintering  tungsten balls  immiscible as Mo and Cu, it is difficult to obtain fully dense Mo-Cu materials, raw materials present in the sealing gap affects the airtightness and thermal expansion properties. Mechanical alloying is a high energy ball milling machine by rotating or vibrating the powder to medium strong impact, grinding and mixing, the powder is crushed into nano-sized particles to obtain a uniform distribution of Mo-Cu composite powders. Preparing a sintered composite network-like structure, to improve the density and improve the sealing properties of materials.