Reciprocating sliding wear behaviour of PEEK-based hybrid composites
Reciprocating sliding wear behaviour of PEEK-based hybrid composites
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DOI：
10.1016/j.wear.2016.05.024
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发表时间：
2016-09-15
期刊：
影响因子：
5
通讯作者：
De Baets, R.
中科院分区：
文献类型：
--
作者：
Rodriguez, V.;Sukumaran, J.;De Baets, R.
从力学性能和摩擦学性能的角度研究了聚醚醚酮（PEEK）基混杂复合材料中填料的作用。在此背景下，添加纳米二氧化硅（SiO2）、短碳纤维（SCF）、石墨、二氧化钛（TiO 2）和硫化锌（ZnS）作为添加剂。往复滑动磨损试验（平对平）对AISI 52100轴承钢进行接触压力范围为4 MPa至10 MPa，滑动速度为20 min/s和50 mm/s。在大多数测试条件下，纳米颗粒降低了摩擦系数。利用表面形貌仪（ST）、光学显微镜（OM）和扫描电子显微镜（SEM）对磨损表面和转移膜的形貌进行了观察。采用量纲分析法研究了纳米粒子对轴承钢表面转移膜形成的影响。纳米颗粒对磨损率的影响与接触压力和滑动速度有关。结果表明，纯PEEK的耐磨性有限，但PEEK填充纳米二氧化硅表现出优越的上级耐磨性在最高接触压力的两个滑动速度。纳米颗粒似乎对钢对表面具有抛光效果。纳米颗粒添加剂可以解释其与微米颗粒填充和未填充的PEEK相比更低的摩擦系数和改进的耐磨性。基于传递层特性的量纲分析的输出与摩擦结果吻合良好。(C)© 2016 Elsevier B. V.版权所有。
The present research deals with the effects of fillers in Polyetheretherketone (PEEK) based hybrid composites from the view point of mechanical and tribological properties. In this background, nano-sized silica (SiO2), short carbon fibre (SCF), graphite, titanium dioxide (TiO2) and zinc sulphide (ZnS) were added as the additives. Reciprocating sliding wear tests (flat-on-flat) against AISI 52100 bearing steel were performed at contact pressures ranging from 4 MPa to 10 MPa and with sliding velocities of 20 mini s and 50 mm/s. Under most test conditions, the nanoparticles reduced the friction coefficient. The morphologies of the worn surfaces and the transfer films, were observed by surface topography (ST), optical microscopy (OM) and scanning electron microscopy (SEM). A dimensional analysis was used to evaluate the influence of nanoparticles on transfer film formation on bearing steel counter surface. It is evident that the effect of nanoparticles on wear rate depended on the contact pressure and sliding speed. Results indicated a limited wear resistance for neat PEEK, but PEEK filled with nano-sized silica exhibited superior wear resistance at the highest contact pressure for both sliding speeds. The nanoparticles seem to have a polishing effect on the steel counter surface. The nanoparticle additives may account for their lower friction coefficient and improved wear resistance in comparison to micro-particle-filled and unfilled PEEK. The output from the dimensional analysis based on transfer layer characteristics is in good agreement with the friction result. (C) 2016 Elsevier B.V. All rights reserved.