Deformation Behavior and Properties of a CuZrTiNi BMG Kinetic Spray Coating
The deformation behavior and mechanical properties of a Cu54Zr22Ti18Ni6 bulk metallic glass during and after deposition by kinetic spraying were investigated. The bulk metallic glass feedstock particles were manufactured by inert gas atomization and were subsequently deposited onto mild steel substrates by means of kinetic spraying at different powder carrier gas temperatures room temperature, 450 (within the supercooled liquid region), and 550 ℃ (above crystallization temperature). In addition, the phase compositions of the feedstock and assprayed BMG coatings were investigated using X-Ray Diffraction (XRD), Differential Scanning Calorimetry (DSC), and Transmitted Electron Microscopy (TEM). With an increase of the powder feed temperature, it was deduced that more intimate contact of the particles with the substrate was achieved which decreased the porosity of the resulting coating. However, crystallizations, which seemed to be induced by severe deformation and accumulated heat, were observed at localized regions in the coating. In addition, micro-hardness and bond strength were affected by the crystallization degree of the assprayed coatings.
J. S. Kim Y. M. Xiong C. Lee H. S. Choi H. J. Kim
Kinetic Spraying Coating Laboratory (NRL), Division of Materials Science & Engineering, Hanyang Univ Nanomaterial Team, Advanced Materials Center, Korea Institute of Industrial Technology, Incheon, Kor
国际会议
北京
英文
2007-05-14（万方平台首次上网日期，不代表论文的发表时间）