Microstructure and properties of Cu/V0.97W0.03O2 composite material

作者：Zou Jun Tao; Zhang Le; Wang Xian Hui^*; Huang Xing; Liang Shu Hua

来源：Materials Science and Engineering of Powder Metallurgy, 2013, 18(1): 53-58.

• Changing temperature
• Microstructure and properties
• Room temperature
• Sintering process
• Surface microstructures
• VO2
• XRD

Cu/V0.97W0.03O2 composite materials were prepared by powder metallurgy. The composition and surface microstructure were analyzed by SEM and EDS, the crystals structure in room temperature was detected by XRD, the conductivity of different V0.97W0.03O2 doping rates composite during changing temperature was tested by Eddy current electric conductance meter. The results indicate that Cu/V0.97W0.03O2 composite materials exhibit an abrupt change of conductivity when the temperature is near 0°C, the range of change increases with increasing the amount of V0.97W0.03O2. Meanwhile, the crystal structure of V0.97W0.03O2 in Cu/V0.97W0.03O2 composite materials is the same as tetragon phase VO2, which indicates that there is no interaction on crystal structure between Cu and V0.97W0.03O2, however, a small amount of V0.97W0.03O2 decomposes in the sintering process.

• 出版日期2013