ISSN   1004-0595

CN  62-1095/O4

高级检索
程相征, 谢鲲, 赫庆坤, 高翔, 陈洋洋, 曹勇军, 陈蕴博, 孙金全. HT250刹车盘气体渗氮耐磨性研究[J]. 摩擦学学报, 2018, 38(3): 256-263. DOI: 10.16078/j.tribology.2018.03.002
引用本文: 程相征, 谢鲲, 赫庆坤, 高翔, 陈洋洋, 曹勇军, 陈蕴博, 孙金全. HT250刹车盘气体渗氮耐磨性研究[J]. 摩擦学学报, 2018, 38(3): 256-263. DOI: 10.16078/j.tribology.2018.03.002
CHENG Xiangzheng, XIE Kun, HE Qingkun, GAO Xiang, CHEN Yangyang, CAO Yongjun, CHEN Yunbo, SUN Jinquan. Wear Resistance of the HT250 Brake Disk Treated by Gas Nitriding[J]. TRIBOLOGY, 2018, 38(3): 256-263. DOI: 10.16078/j.tribology.2018.03.002
Citation: CHENG Xiangzheng, XIE Kun, HE Qingkun, GAO Xiang, CHEN Yangyang, CAO Yongjun, CHEN Yunbo, SUN Jinquan. Wear Resistance of the HT250 Brake Disk Treated by Gas Nitriding[J]. TRIBOLOGY, 2018, 38(3): 256-263. DOI: 10.16078/j.tribology.2018.03.002

HT250刹车盘气体渗氮耐磨性研究

Wear Resistance of the HT250 Brake Disk Treated by Gas Nitriding

  • 摘要: 为提高HT250刹车盘耐磨、耐腐蚀性,延长服役寿命,对其进行了气体渗氮表面强化处理. 分别对基体和氮化试样进行了微观组织和物相分析,研究了销盘干摩擦的摩擦磨损行为,探讨了HT250渗氮试样的磨损机理. 结果表明:采用530 ℃×10 h气体渗氮时,渗氮层深为0.3 mm,其表层硬度HV0.1 1 140;在20、50和100 N载荷下,渗氮试样摩擦系数均高于基体试样,但磨损率分别降低了11.1%、27.5%和38.3%. 基体试样以疲劳剥层磨损为主,伴随着磨粒磨损;渗氮试样以剥层磨损为主,渗氮层的残余压应力抑制了裂纹的扩展,提高了其耐磨性.

     

    Abstract: HT250 the brake disk was treated by gas nitriding for improved wear resistance, corrosion resistance and prolong service lifetime. The microstructure and phase of the nitrided and unnitrided samples were analyzed and the wear mechanisms were discussed under dry sliding with a pin-on-plate configuration. The results indicate that the thickness of the nitriding layer treated by gas nitriding at the 530 ℃×10 h was 0.3 mm and the surface hardness was HV0.11 140. The friction coefficient of the nitrided sample was higher than that of unnitrided sample under loads of 20, 50 and 100 N. However, the wear rates were reduced by 11.1% (20 N), 27.5% (50 N) and 38.3% (100 N) using unnitrided sample as reference. The wear mechanisms of the unnitrided sample was fatigue peeling wear accompanied by abrasive wear. The wear mechanism of the nitrided sample was peeling wear. The compressive residual stress of nitriding layer inhibited the crack propagation and improved the wear resistance.

     

/

返回文章
返回