风电扭矩限制器用铜基摩擦材料的组织和性能研究  

Research on the microstructure and properties of copper based friction materials for wind power torque limiters

作　　者：张望成 彭世超 刘旭 王逸林 ZHANG Wangcheng;PENG Shichao;LIU Xu;WANG Yilin(Hunan Ealen Material Technology Co.,Ltd,Yiyang 413000,China)

机构地区：[1]湖南屹林材料技术有限公司,湖南益阳413000

出　　处：《粉末冶金工业》2024年第6期45-49,共5页Powder Metallurgy Industry

基　　金：湖南省科技创新计划资助项目(2023RC3270)

摘　　要：采用粉末冶金工艺制备了风电扭矩限制器用铜基摩擦材料,通过扫描电镜、电子万能试验机和摩擦材料试验机等对摩擦材料的组织和性能进行表征。结果表明,铜基风电摩擦材料的组织均匀,Al_(2)O_(3)摩擦组元和石墨润滑组元均匀分布于铜基体上。摩擦材料具有良好的机械性能,平均硬度可达56.5HBW,抗压强度最高为327 MPa,平均粘接强度为31.7 MPa。分别在14、20和25 MPa正压力下进行摩擦试验,摩擦因数能稳定在0.5左右,试验过程中扭矩平稳,试验后摩擦材料表面状态良好;在25 MPa最大正压力试验条件下,摩擦材料磨耗仅有2.82 g。采用粉末冶金工艺制得的风电扭矩限制器用铜基摩擦材料组织均匀,性能良好,能满足不同正压力工况下的使用要求。Copper based friction materials for wind power torque limiters were prepared by powder metallurgy technology,and the microstructure and properties of the friction materials were characterized by scanning electron microscopy,electronic universal testing machine,and friction material testing machine.The results show that the microstructure of copper based wind power friction materials is uniform,and Al_(2)O_(3) friction components and graphite lubrication components are uniformly distributed on the copper matrix.Friction materials have good mechanical properties,with an average hardness of 56.5HBW,a maximum compressive strength of 327 MPa,and an average adhesive strength of 31.7 MPa.Friction tests a conducted under normal pressures of 14,20,and 25 MPa,and the friction coefficient remains stable at around 0.5.The torque is stable during the test,and the surface condition of the friction material is good after the test;Under the maximum positive pressure test condition of 25 MPa,the wear of the friction material is only 2.82 g.The copper based friction materials for wind power torque limiters prepared by powder metallurgy process has a uniform structure and good performance,which can meet the requirements of different positive pressure working conditions.

关 键 词：风电 摩擦材料 组织 性能 正压力 

分 类 号：TF125.9[冶金工程—粉末冶金] TM614[冶金工程—冶金物理化学]