Influence of rare earths addition on residual stress of Fe-based coating prepared by brush plating technology

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• 作者：Guo JIN ((金 国)) ; Bingwen LU ((卢冰文)) ; Dingding HOU ((侯丁丁)) ; Xiufang CUI ((崔秀芳)) ; ^{cuixf721@163.com" class="auth_mail" title="E-mail the corresponding author} ; Jiahui SONG ((宋佳慧)) ; Erbao LIU ((刘二宝))
• 关键词：rare earths ; brush plating ; iron coating ; residual stress
• 刊名：Journal of Rare Earths
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：34
• 期：3
• 页码：336-340
• 全文大小：956 K

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.