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In 2009, researchers at Anton Paar Germany utilized a rheometer linked to a tribology cell to effectively examine the tribological functionality of numerous greases. In a recent study, scientists used a similar analytical set up to investigate the grinding of various coated abrasives.
近年来，涂层磨料（例如砂纸）在各个行业和研究领域的使用增加，尤其是在制造业和工业应用方面。
An exact grinding mechanism with a precise and known result is very valuable. In the industrial sector, it is very important that coated abrasives have standardized, exceptional quality. For this reason, it is important to have suitable analyzing methods for coated abrasives.
试图评估众多涂层磨料的效力的科学家通常集中于摩擦学，这是对相对于彼此运动的接口表面的研究以及对系统属性的描述，包括磨蚀性磨损过程。值得注意的是，包括磨损和润滑在内的摩擦学中的许多现象与流动学和材料变形科学有关。亚博老虎机网登录
One of the instruments used in rheology is a rheometer. Some kinds of rheometers use a rotating cylinder to assess flow dynamics. These rheometers offer many perks in a tribology setting. Specifically, a rheometer has precise speed and force controls, as well as multiple rudimentary parameters relating to torque and temperature control.
通常，涂层的磨料由纸张或布衬里，粘合剂，磨料颗粒以及改善磨料必不可少的其他成分组成。砂纸中使用的两种最广泛使用的谷物类型是由氧化铝或碳化硅制成的。材料形态和表面结构的变体对涂层磨料的性能和磨损动力学有很大影响。例如，磨损速率与涂层磨料的晶粒尺寸密切相关。
在摩擦学研究中，实验试验通常通过不同种类的底仪设备进行执行，包括球盘和球骨架。借助这些经典工具，可以获取有关磨损过程的数据，以及有关重要变量的信息，包括磨损系数和摩擦系数。
可以通过各种分析技术（包括扫描电子显微镜（SEM）和光学显微镜）分析涂层磨料的表面接地。另外，经常进行重量法。这涉及在磨损测试之前和之后称量材料。亚博网站下载然后可以确定任何磨料损失，并应用于磨损表征。
一些商业上可用的底仪提供了有关摩擦机制的综合数据，但摩擦仪往往昂贵。通常，实验室通常具有变性仪，但没有摩擦计。因此，开发一种使用流变仪进行摩擦学的方法可以降低成本，并允许在不同的研究领域进行更广泛的使用。
将流变仪应用于摩擦学
根据一项有关发表的研究Tribology Letters杂志在2021年6月，一组芬兰研究人员能够开发一种新技术，通过利用与摩擦学细胞相连的流变仪来分析涂层磨料的磨损行为。研究团队使用了一个盘中的小细胞，因为它可以在精确概述的条件下执行摩擦学测量，以使用可管理的样本量密切模拟现实生活中的条件。
该小组通过对各种涂层磨料进行磨削的钢球，调查了涂层磨料的摩擦学作用。磨损实验是由Anton Paar的流变仪和摩擦学细胞进行的。降低了弹簧的测量轴，以在球与磨料表面之间接触，并将其放置在牢房的圆盘上，并在接触点处施加必要的正常力。实验设置按照节省仪的规定，以已建立的速度旋转圆盘上的球。在磨削阶段之后，团队测量并记录了钢球的重量以识别质量减少。SEM也用于分析。
研究结论
研究小组表示，其多学科设置有效，结果与基于先前研究的期望有关。例如，结果准确地证明了相对于较大晶粒尺寸的磨损如何增加。
As seen in previous studies, the Finnish researchers noted three distinct phases to the grinding process, which have been described as run-in, steady-state, and failure phase. These three specific stages allow for the precise comparison of different coated abrasives. The experimental setup also precisely showed how wear performance is strongly related to the degree of the normal force, with higher wear directly related to the higher normal force.
The study team did say more investigations are necessary to examine and enhance the testing variables of the combination system to measure a broader range of coated abrasives, with different kinds of grains and adhesives.
资源和进一步阅读
Gammelgårda。et al.A Method for Tribological Measurements of Coated Abrasives using a Rheometer. Tribology Letters. [Online] Available at:https://www.proquest.com/openview/4c75cc3eef75a1843bb34771945cf025/1?pq-origsite=gscholar
海耶，P。et al.Correlation between friction and flow of lubricating greases in a new tribometer device.润滑科学亚博老虎机网登录。[Online] Available at:https://onlinelibrary.wiley.com/doi/abs/10.1002/ls.88
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