Molybdenum carbide has a high melting point and hardness, good thermal stability and mechanical stability, and excellent corrosion resistance and other characteristics. Molybdenum is a silvery white refractory metal, a melting point of 2615 ℃, density of 10.2 g / cm 3, the expansion coefficient is small, a special tube is almost the same coefficient of expansion of the glass. Molybdenum stable at room temperature is higher than 600 ℃, rapidly oxidized.
2014年1月20日星期一
Effects of molybdenum wirer microstructure
Molybdenum Molybdenum plates and various shaped pieces of material, its microstructure and physical properties of these largely affect the performance of molybdenum processed products, and product quality. Of molybdenum powder microstructure showed generally uniform particle size, agglomeration seriously poor particle dispersion, a wide particle size distribution and the like. The presence of these will make the microstructure of the molybdenum powder sintered billet by a subsequent press-formed on a uniform grain size of the organization and performance was not satisfactory, and even the formation of holes, cracks and other defects, and then in the subsequent rolling, swaging, billet pressure stratified
molybdenum plating during processing, peeling, cracking, seriously affecting product quality and yield processing products. To further understand the impact of molybdenum powder
molybdenum screws properties of molybdenum processed products, this paper specially selected molybdenum powder and ordinary molybdenum powder, processed through the same process of molybdenum wire and molybdenum plate products, then by detecting the physical and chemical properties, and comparative analysis the molybdenum and molybdenum products processing raw powder microstructure its impact product performance and quality.
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