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Effect of shot particle conditions on the transfer of copper induced by fine particle peening

机译：射击颗粒条件对细颗粒喷丸诱导铜传输的影响

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Fine particle peening (FPP) is a promising technology to improve fatigue life of mechanical components. In addition, transfer of shot particle elements from the particle to the treated surface occurs during the FPP process. This phenomenon is effective to modify the surface characteristics by concentrating the transferred elements onto the treated surface. In this paper, the authors carried out FPP to enrich the aluminum and steel substrate with copper, which has lots of attractive properties such as high electric conductivity, high thermal conductivity, antibacterial properties, and so on. Two types of hybridized particles which comprised the steel particle and overlying copper layer were developed to accelerate the transfer. The one was "agitated particles" prepared by mechanical mixing using the mortar, and the other was "coated particles" prepared by electro-less copper deposition. FPP-treated surface with the hybridized particles and the commercial copper particles were prepared and characterized to discuss the effect of shot particle conditions on the transfer phenomena. Results indicated that the amount of copper transferred by FPP using the hybridized particles, especially the "coated particles", was greater than that by using copper particles. The hybridized particles enhanced the transfer of copper since the impact of hard steel particles effectively expose the virgin metallic surface, accelerating the bonding between the substrate and particles. Ability of the hybridized particles to induce transfer was correlated with the hardness ratio between the substrate and the particles. It was revealed that the hybridized particles were beneficial for FPP to induce transfer of low hardness material.
机译：精细粒子喷丸（FPP）是一种提高机械部件疲劳寿命的有希望的技术。另外，在FPP工艺期间发生从颗粒到处理过的表面的拍摄粒子元素的转移。这种现象是通过将转移的元件浓缩到处理的表面上来改变表面特性来有效。在本文中，作者进行了FPP，用铜丰富铝和钢基材，其具有大量有吸引力，例如高导电性，高导热性，抗菌性能等。开发出由钢颗粒和覆盖铜层的两种类型的杂交颗粒以加速转移。通过使用砂浆机械混合制备的“搅拌颗粒”，另一种是通过电较低的铜沉积制备的“涂覆颗粒”。制备具有杂交颗粒和商业铜颗粒的FPP处理的表面，并表征讨论散发颗粒条件对转移现象的影响。结果表明，通过使用杂交颗粒，尤其是“涂覆颗粒”，由FPP转移的铜的量大于通过使用铜颗粒。杂交颗粒增强了铜的转移，因为硬钢颗粒的影响有效地暴露了原始金属表面，加速了基板和颗粒之间的粘合。杂交颗粒诱导转移的能力与基材和颗粒之间的硬度比相关。揭示杂交颗粒有利于FPP诱导低硬度材料的转移。

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