Shanxi Key Laboratory of Chemical Product Engineering, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, 030024, Shanxi (P. R., China.
Chem Asian J. 2023 May 16;18(10):e202300108. doi: 10.1002/asia.202300108. Epub 2023 Apr 25.
A novel layered magnesium phosphate (MgP) was synthesised from a MgO-P O -choline chloride-oxalic acid dihydrate system using an ionothermal approach. Single crystal samples of MgP were obtained following introduction of diethylamine (DEA) to the reaction system. Its structure revealed that both the layer and the sheets contained Mg octahedra. Interestingly, adding the layered material to lithium grease resulted in superior lubrication with higher load-carrying, anti-wear and friction reduction capacities compared with the typical lubricant MoS ; the P value of base grease was increased from 353 to 1078 and 549 N, the wear scar diameter was decreased from 0.50 to 0.34 and 0.46 mm, and the friction coefficient was decreased from 0.082 to 0.056 and 0.075, respectively. We also discuss the lubrication mechanism of layered materials based on the crystal structure and resource endowment. The findings could assist the development of new high-efficiency solid lubricants.
一种新型的层状磷酸镁（MgP）是通过离子热法从 MgO-P O -胆碱氯化物-草酸二水合物体系中合成的。在反应体系中引入二乙胺（DEA）后，得到了 MgP 的单晶样品。其结构表明，层和片都含有 Mg 八面体。有趣的是，将层状材料添加到锂基润滑脂中，与典型的润滑剂 MoS 相比，具有更高的承载能力、抗磨损和减摩能力，基础润滑脂的 P 值从 353 增加到 1078 和 549 N，磨损痕迹直径从 0.50 减小到 0.34 和 0.46 mm，摩擦系数从 0.082 减小到 0.056 和 0.075。我们还根据晶体结构和资源丰度讨论了层状材料的润滑机制。这些发现可能有助于开发新型高效固体润滑剂。
