纺织学报 ›› 2024, Vol. 45 ›› Issue (07): 189-195.doi: 10.13475/j.fzxb.20230403601

• 机械与设备 • 上一篇    下一篇

纺织钢领用类金刚石涂层在不同温度下的摩擦性能

郭飞飞1(), 李本寅1, 苏慧明1, 王珂心1, 程启增1, 成小乐1, 秦立果2   

  1. 1.西安工程大学 机电工程学院, 陕西 西安 710048
    2.西安交通大学 设计科学与基础部件研究所, 陕西 西安 710049
  • 收稿日期:2023-04-20 修回日期:2024-01-24 出版日期:2024-07-15 发布日期:2024-07-15
  • 作者简介:郭飞飞(1985—),女,副教授,博士。主要研究方向为摩擦表面设计。E-mail:feifeiyudian@126.com。
  • 基金资助:
    陕西省科技厅项目(2022JQ-526);陕西省教育厅基础研究项目(21JK0659);西安工程大学研究生创新基金项目(chx2022005);中国纺织工业联合会科技指导性项目(2021070);陕西省秦创原“科学家+工程师”队伍项目(2023KXJ-129)

Frictional properties of diamond-like coatings on spinning steel collar at different temperatures

GUO Feifei1(), LI Benyin1, SU Huiming1, WANG Kexin1, CHENG Qizeng1, CHENG Xiaole1, QIN Liguo2   

  1. 1. School of Mechanical and Electrical Engineering, Xi'an Polytechnic University, Xi'an, Shaanxi 710048, China
    2. Institute of Design Science and Basic Components, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
  • Received:2023-04-20 Revised:2024-01-24 Published:2024-07-15 Online:2024-07-15

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摘要：

为研究纺织钢领用类金刚石(DLC)的高温摩擦磨损机制,采用磁控阴极弧增强磁控溅射法在20号钢(20#)表面沉积得到掺杂Cr元素的DLC样品。借助扫描电子显微镜观察DLC样品的表面形貌;通过X射线衍射仪、能量色散谱仪和拉曼光谱仪分析DLC样品的结构成分;使用纳米压痕试验机测试涂层的力学性能。利用高温摩擦磨损试验机测试涂层在不同温度下(25、100、200、300 ℃)的摩擦性能,并结合仿真分析钢领的受力对摩擦过程的影响。结果表明:20#和20#-DLC 2种试样的平均摩擦因数随着温度上升呈先上升后下降的趋势;20#试样在300 ℃下生成氧化物,大量的氧化物形成附着层,平均摩擦因数降低到0.54;20#-DLC试样在温度为200 ℃和300 ℃时发生石墨化,形成以碳元素为主的转移层,转移层替代附着层存在,摩擦由涂层-附着层转变为涂层-转移层,平均摩擦因数由0.145降至为0.107。通过仿真分析得出,沉积DLC后的钢领在实际运行中所受的最大应力值和最大变形量分别为4.20×108 Pa和9.69×10-3 mm。

关键词: 钢领, 类金刚石涂层, 冲击性能, 转移层, 摩擦性能

Abstract:

Objective In order to improve the friction and wear properties, prolong the service life of the steel collar and increase the efficiency of the steel collar in ring spinning machines, the friction and wear mechanism of diamond-like coating (DLC) on spinning steel collar at high temperature was studied, and the friction and wear resistance caused by the structure change of diamond-like coating was analyzed. In the actual running state, the force of diamond-like coating applied on the steel collar was analyzed, and the performance of diamond-like coating was studied through the maximum force value and the maximum deformation.

Method Cr-doped DLC coating was prepared by low temperature physical vapor deposition (PVD) coating technology on the surface of 20# steel. The surface morphology of DLC coating was studied using scanning electron microscope. The structure composition of DLC coating was analyzed by X-ray diffraction, energy spectrum and Raman spectrometer. Nanoindentation tester was a dopted to test the mechanical properties of the coating. High temperature friction and wear testing machine was a dopted to test the friction performance of the coating at different temperatures (25, 100, 200, 300 ℃), and the influence of the force on the friction process of the steel collar was analyzed by simulation.

Results From the friction test at different temperatures, the average friction factor of 20# and 20#-DLC samples were found to firstly increase and then decrease as temperature increased. At 300 ℃, 20# generated oxides, with a large amount of oxides formed an adhesion layer. The average friction coefficient was reduced to 0.54. The graphitization of 20#-DLC samples occurred at 200 ℃ and 300 ℃, forming a transfer layer dominated by carbon elements, and the transfer film replaced the attachment layer. The friction changed from coating to attachment layer to coating to transfer layer, and the average friction coefficient at the two interfaces was decreased to 0.145 and 0.107, respectively. DLC coating not only showed excellent anti-friction effect, but also reduced the stress and deformation in the process of friction. Through simulation analysis, the maximum stress value and maximum deformation of the steel collar after deposition of DLC coating were 4.20×108 MPa and 1.47×10-2 mm, respectively in actual operation.

Conclusion The DLC coating doped with Cr element was prepared on the substrate by low temperature PVD coating technology. The elastic modulus and hardness were 205.8 and 23.66 GPa, respectively. The coating surface showed honeycomb structure and amorphous structure. The average friction factors of 20# steel sample at 25, 100, 200 and 300 ℃ are 0.05, 0.62, 0.64 and 0.54, respectively. The average friction factors of 20#-DLC samples at 25, 100, 200 and 300 ℃ are 0.053, 0.213, 0.145 and 0.107, respectively. Under the same temperature conditions, the friction factor curve of 20#-DLC sample is significantly lower than that of 20# sample, and the DLC coating forms a transfer layer dominated by carbon elements at 200 ℃ and 300 ℃, which reduces the friction factor. DLC coating has excellent anti-friction properties and is suitable for textile steel collar working at high temperature. In the process of friction and wear, the two types of steel collar (20# and DLC-20#) showed different degrees of stress concentration and deformation at the lower right corner of the runway under the action of external forces. The maximum stress value and deformation amount of 20#-DLC are 4.20×108 Pa and 9.69×10-3 mm, respectively. The deformation of DLC coating absorbs part of the energy brought by the stress, which reduces the maximum stress value and deformation amount of the steel collar matrix.

Key words: steel collar, diamond-like coating, impact performance, transfer layer, friction property

中图分类号: 

  • TH117.1

图1

20#-DLC试样的表面形貌"

图2

20#-DLC表面的XRD图谱"

图3

20#-DLC涂层纳米压痕载荷-位移曲线"

图4

不同温度下各试样摩擦因数随时间变化曲线"

图5

不同温度下20#配副系统表面磨痕形貌"

图6

不同温度下20#-DLC配副系统表面磨痕形貌"

图7

不同温度下20#-DLC试样盘体磨痕的Raman谱图"

图8

不同温度下20#-DLC对磨球面磨痕表面形貌和C(红),Fe(绿色)和O(紫色)元素分布"

图9

实际运行状态中钢领的受力分析"

图10

2种钢领的受力云图"

图11

2种钢领受力变形云图"

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