冷喷涂中Au团簇在金属表面沉积过程的分子动力学模拟.pdf

q Vol No r ACTA METALLURGICA SINICA Nov pp Au cvqeh li RC QT A AIMAI h Au O Au WvOaa Au O Au W wOWTJWkMXHOOWO DWVSEBOWFp nyf vOaaO kmr TB A r MOLECULAR DYNAMICS SIMULATION OF Au NANOSCALE PARTICLE DEPOSITED ON Au SURFACE DURING COLD SPRAYING O Lijuan GAO Hong ZHA O Liangju ZENG Danling GA College of Power Engineering Chongqing University Chongqing Correspondent GAO Hong lecturer Tel Email gaohong sinacom Supported by National Natural Science Foundation of China No Manuscript received in revised form ABSTRACT By using molecular dynamics simulation the dep osition pro cess of cold spraying nanoscale Au particles on Au surface and the morphological changes of the surface layers of the substrate and the particle are describ ed in which the manyb o dy p otential was used to calcu late the interatomic force b etween the atoms Calculation of the temp eratures showed that the melt phenomenon o ccured on the lo cal area of the substrate during impact and dep osition The inuence factors on dep osition pro cess such as incident velo city and the size of the particles were discussed through calculating the numb er of atoms p enetrating into the substrate and the contact area b etween the particle and the substrate KEY W ORDS cold spray molecular dynamics simulation nanoscale particle dep osition B CGDS cold gas dynamic URVfgpmi spraying E CS cold spray tlA KVpmcX VtCNPVN pmfg Cu N Cu