冻干法制备不同晶型纳米磷酸锆及其摩擦学性能研究  

Preparation of Nanometer Zirconium Phosphate with Different Crystal Types by Freeze-Drying Method and Its Tribological Properties

作　　者：杨卓宇 彭润玲[1] 杜航 曹蔚[1] 翟浩楠 王威 YANG Zhuoyu;PENG Runling;DU Hang;CAO Wei;ZHAI Haonan;WANG Wei(School of Mechatronic Engineering,Xi’an Technological University,Xi’an Shaanxi 710021,China)

机构地区：[1]西安工业大学机电学院,陕西西安710021

出　　处：《润滑与密封》2023年第4期81-89,共9页Lubrication Engineering

基　　金：国家自然科学基金项目(52175113)。

摘　　要：为研究纳米添加剂磷酸锆(α-ZrP)微观形态结构对其摩擦性能的影响,通过调整冻干工艺参数,制备不同形貌及粒径的α-ZrP;利用场发射扫描电镜、透射电子显微镜以及X-射线衍射仪对制备的α-ZrP的微观形貌进行表征,在球盘式往复运动试验机上在不同工况下考察α-ZrP晶型对石蜡基础油摩擦磨损性能的影响。结果表明:通过控制聚乙烯吡咯烷酮添加剂的添加量,获得颗粒状、棒状以及片层状的α-ZrP,相同工况下颗粒状α-ZrP的摩擦因数最小;随冻结速率增加,α-ZrP的粒径减小,相同工况下其摩擦因数也减小;低速重载工况时,片状α-ZrP的摩擦学性能最好,而在高速轻载工况时,颗粒状α-ZrP的摩擦学性能更优。In order to study the effect of microstructure of nano-additive zirconium phosphate(α-ZrP)on its tribological properties,α-ZrP with different morphology and particle size was prepared by adjusting the lyophilization process parameters.The microstructure ofα-ZrP was characterized by SEM,TEM and XRD.The effect of the content and crystal types ofα-ZrP on the friction and wear properties of paraffin base oil was investigated on the ball and disk reciprocating motion testing machine under different working conditions.The results show thatα-ZrP with granular,rod-shaped and lamellar can be obtained by controlling the amount of polyvinylpyrrolidone additive,and the friction coefficient of granularα-ZrP is the minimum under the same conditions.With the increase of freezing rate,the particle size ofα-ZrP decreases,and the friction coefficient ofα-ZrP also decreases under the same conditions.The lamellarα-ZrP has the best tribological properties at low speed and heavy load condition,while the granularα-ZrP has the best tribological properties at high speed and light load condition.

关 键 词：冻干工艺 磷酸锆 纳米添加剂 摩擦学性能 

分 类 号：TH117.2[机械工程—机械设计及理论]