北京科技大学学报2012，Vol.34Issue(7)：823-829,7.
镀钨碳纳米管增强铜基复合材料的制备及性能
Fabrication and properties of Cu matrix composites reinforced by tungsten- coated carbon nanotubes
摘要
Abstract
Multi-walled carbon nanotubes （CNTs） were coated with tungsten layers using a carbonyl thermal decomposition process, The tungsten-coated carbon nanotubes （W-CNTs） and electrolytic copper powders were used as starting materials to fabricated W-CNT/Cu composites by mechanical milling and spark plasma sintering （SPS）. The morphologies and microstructures of the mixed powders and the sintered composite bulks were characterized by field-emission scanning electron microscopy （SEM） , and the phase analysis of the sintered composite bulks was carried out by X-ray diffraction （ XRD）. The influences of W-CNT content and sintering temperature on the relative density, tensile strength, elongation and electrical conductivity of the W-CNT/Cu composites were investiga- ted. The experimental results show that the 1% W-CNT added composites sintered at 850 ℃ have the maximum relative density, tensile strength and electrical conductivity. In comparison with the sintered pure Cu bulk, the tensile strength increases by 103.6% but the electrical conductivity decreases only by 15.9% for the W-CNT/Cu composites.关键词
金属基复合材料/铜/钨/碳纳米管/抗拉强度/电导率/放电等离子体烧结Key words
metallic matrix composites/copper/tungsten/carbon nanotubes/tensile strength/electrical conductivity/spark plasma sintering分类
冶金工业引用本文复制引用
聂俊辉,张亚丰,史娜,贾成厂..镀钨碳纳米管增强铜基复合材料的制备及性能[J].北京科技大学学报,2012,34(7):823-829,7.基金项目
国家自然科学基金资助项目 （）
