The effect of rare earths（La, Ce and Pr） addition on residual stress in iron coatings prepared by brush plating was investigated. The results showed that the addition of rare earth transformed the residual stress in...The effect of rare earths（La, Ce and Pr） addition on residual stress in iron coatings prepared by brush plating was investigated. The results showed that the addition of rare earth transformed the residual stress in the coating from tensile to compressive. To relieve the residual stress, on the one hand, RE elements segregated at the grain boundaries which restricted the coalescence of the grains and provided more capability of grain deformation. On the other hand, RE elements could purify detrimental element and absorb hydrogen atoms in the coating. Among the three rare earths, elements lanthanum showed the most significant effect on surface morphology and residual stress.展开更多
基金supported by the National Natural Science Foundation of China(51275105,51375106)National Basic Research Program of China(973 Program)(2011CB013404)+2 种基金China Postdoctoral Science Foundation(2015M571391)Heilongjiang Postdoctoral Foundation(LBH-Z14050)Fundamental Research Funds for the Central Universities(HEUCF)
文摘The effect of rare earths（La, Ce and Pr） addition on residual stress in iron coatings prepared by brush plating was investigated. The results showed that the addition of rare earth transformed the residual stress in the coating from tensile to compressive. To relieve the residual stress, on the one hand, RE elements segregated at the grain boundaries which restricted the coalescence of the grains and provided more capability of grain deformation. On the other hand, RE elements could purify detrimental element and absorb hydrogen atoms in the coating. Among the three rare earths, elements lanthanum showed the most significant effect on surface morphology and residual stress.
