Friction and wear of additive manufactured polymers in dry contact
Friction and wear of additive manufactured polymers in dry contact
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DOI：
10.1016/j.jmapro.2020.09.051
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发表时间：
2020-11-01
影响因子：
6.2
通讯作者：
Neville, A.
中科院分区：
文献类型：
--
作者：
Dangnan, F.;Espejo, C.;Neville, A.
增材制造（AM）的使用正在广泛推进摩擦学应用和材料科学研究中的快速成型和制造范围。然而，仍然有有限的研究集中在调查AM聚合物的摩擦和磨损性能，特别是Polyjet制造的零件。这项工作的重点是不同的接触载荷的增材制造的丙烯腈-丁二烯-苯乙烯（3D ABS）和Verogray聚合物使用Polyjet技术制造的摩擦和磨损机制的影响。在室温下，在与52100钢配合面的干滑动接触下施加1、5和10 N的载荷。摩擦和磨损的表面取向上的滑动方向的依赖性。结果表明，在1 N载荷下，摩擦系数主要取决于表面相对于滑动方向的取向。然而，在5 N和10 N的较高载荷下，这种依赖性被证明是块体材料性质的函数，而不是表面粗糙度。表面形态和磨损率之间的进一步相关性被证明是依赖于散装材料的性能和所施加的负载。本研究的结果为Polyjet材料在金属-聚合物摩擦接触中的替代应用提供了改进的摩擦和磨损性能。
The use of additive manufacturing (AM) is widely advancing the scope of rapid prototyping and manufacturing in tribological applications and material science research. However, there is still limited research focused on investigating the frictional and wear performance of AM polymers, especially of Polyjet manufactured parts. This work focuses on the effect of varying the contact load on the friction and wear mechanisms of additively manufactured acrylonitrile butadiene styrene (3D ABS) and Verogray polymers fabricated using Polyjet technology. Loads of 1, 5 and 10 N were applied under dry sliding contact with a 52100 steel counterface at room temperature. Dependence of friction and wear on the surface orientation to the sliding direction is noted. The results demonstrate that at 1 N load, the friction coefficient is primarily dependent on the orientation of the surface to the sliding direction. However, at higher loads of 5 N and 10 N, this dependency is shown to be a function of the bulk material properties rather than the surface roughness. Further correlation between the surface morphology and wear rate is shown to be dependent on the bulk material properties and the applied load. The results from this study provide alternate application uses for Polyjet materials in metal-polymer tribo-contacts for improved friction and wear performance.