【标题】Materials Characterization: Advanced Materials in the Driver's Seat
【参考中译】材料表征：驾驶员座椅中的先进材料
【类型】 期刊
【作者】 Tanya Samazan
【摘要】 Instruments within the materials characterization category measure physical properties of samples ranging from particle size and hardness to flow properties and thermal responses. They are often used in QC applications of products as varied as pharmaceuticals and steel. Cautious spending prompted by an inflationary market and an unstable economic environment contributed to a 1.8% growth for these technologies in 2023. Despite a successful recovery in 2022, the industrial sector experienced a slowdown in 2023, with sales stabilizing and companies adopting a more conservative approach to spending. Additionally, the chemicals market softened in the latter half of the year. But the advanced material market remained resilient driving growth for materials characterization. This trend is anticipated to continue in 2024 with an estimated 2.6% growth forecasted in demand for materials characterization techniques.
【参考中译】 材料表征类别内的仪器测量样品的物理性质，范围从颗粒大小和硬度到流动性质和热响应。它们通常用于各种产品的QC应用，如药品和钢铁。通胀市场和不稳定的经济环境促使谨慎的支出，导致这些技术在2023年增长1.8%。尽管2022年成功复苏，但2023年工业部门经历了放缓，销售企稳，企业采取了更保守的支出方式。此外，化学品市场在今年下半年走软。但先进材料市场仍然具有弹性，推动了材料表征的增长。预计这一趋势将在2024年继续，预计材料表征技术的需求将增长2.6%。
【来源】 Instrument Business Outlook 2024, vol.32, no.19
【入库时间】 2024/3/28
【标题】Friction and wear mechanism of artificial joint composite material PEEK/ZnO under different decomposition motion modes of knee joint
【参考中译】人工关节复合材料PEEK/ZnO在不同膝关节分解运动模式下的摩擦磨损机理
【关键词】 PEEK/ZnO; Decomposition motion; Dynamic load; Friction performance
【参考中译】 PEEK/ZnO；分解运动；动载荷；摩擦性能
【作者】 Cunao Feng; Yang Cao; Ting Wu; Jiajia Cen; Kai Chen; Xiaowei Li; Dekun Zhang
【摘要】 According to the standard of knee joint movement and actual working conditions, the complex movement of knee joint can be decomposed into three movement modes: sliding, swinging and twisting. The friction and wear mechanism of PEEK and PEEK/ZnO composites in sliding, swinging and twisting modes was studied on knee joint simulator. The result shows that the friction coefficient and wear of the PEEK/ZnO composite are lower than those of PEEK, and the addition of ZnO can effectively improve the wear resistance of the PEEK composite. The relevant data has deepened people's understanding of the tribological behavior and wear mechanism of artificial knee joints.
【参考中译】 根据膝关节运动的标准和实际工作条件，将膝关节的复杂运动分解为滑动、摆动和扭转三种运动方式。在膝关节模拟器上研究了PEEK和PEEK/ZnO复合材料在滑动、摆动和扭转三种工况下的摩擦磨损机理。结果表明，PEEK/ZnO复合材料的摩擦系数和磨损率均低于PEEK，ZnO的加入能有效提高PEEK复合材料的耐磨性。相关数据加深了人们对人工膝关节摩擦学行为和磨损机理的认识。
【来源】 Tribology International 2023, vol.189
【标题】TRIBOLOGICAL PROPERTIES OF PISTON RINGS DESIGNED FOR SLIDING AGAINST COMPOSITE MATERIALS IN LUBRICATED CONTACTS
【参考中译】润滑接触条件下复合材料滑动活塞环的摩擦学性能
【关键词】 Means of transport; Piston rings; Composite materials; Ceramic particles; Chromium coating
【参考中译】 运输工具；活塞环；复合材料；陶瓷颗粒；铬涂层
【作者】 Andrzej POSMYK
【摘要】 The paper presents basic information on the production, structure and tribological properties of a composite chromium-ceramic coating deposited electrolytically on a cast-iron piston ring for a combustion engine designed for sliding against a composite cylinder liner. The results of comparative tests of two contacts, i.e. cast-iron GJL-250/AlMC and GJL250+Cr-Al_2O_3/AlMC, are described. The deposition of the Cr-Al_2O_3 coating on the cast-iron piston ring reduces almost trifold the wear of the piston ring and about 20% the friction resistance in the contact due to the presence of aluminium oxide particles and fibres. The reinforcing phase removed from the chromium layer polishes the chromium and composite sliding surfaces. The places left by the removed particles serve as depots for oil, which reduces the friction forces and minimises oil consumption. The Al_2O_3 wear debris decreases the roughness of the surfaces in contact, which additionally reduces the friction forces according to the friction hypothesis of Ernst and Merchant.
【参考中译】 本文介绍了用于内燃机滑动复合气缸套的铸铁活塞环上电解沉积铬-陶瓷复合涂层的生产、结构和摩擦学性能的基本情况。介绍了GJL-250/AlMC和GJL250+Cr-Al_2O_3/AlMC两种触头的对比试验结果。在铸铁活塞环上沉积Cr-Al_2O_3涂层，由于氧化铝颗粒和纤维的存在，活塞环的磨损减少了近三倍，接触摩擦阻力降低了约20%。从铬层中去除的强化相抛光了铬和复合材料的滑动表面。被去除的颗粒留下的地方作为油库，减少了摩擦力，最大限度地减少了机油消耗。根据Ernst和Merchant的摩擦假说，Al_2O_3磨屑降低了接触表面的粗糙度，从而进一步降低了摩擦力。
【来源】 Tribologia 2023, no.3