Friction and wear behavior of TaC ceramic layer formed in-situ on the gray cast iron

Friction and wear behavior of TaC ceramic layer formed in-situ on the gray cast iron
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灰口铸铁上原位形成的TaC陶瓷层的摩擦磨损行为

DOI:
10.1016/j.triboint.2019.01.003
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发表时间:
2019-07
影响因子:
6.2
通讯作者:
Zhengxin Lu
Zhengxin Lu
中科院分区:
工程技术1区
文献类型:
--
作者:
Nana Zhao;Yurong Zhao;Yiqi Wei;Xin Wang;Jie Li;Yunhua Xu;Fuxue Yan;Zhengxin Lu

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为了提高灰铸铁表面的摩擦磨损性能,采用原位铸造-热处理的方法制备TaC陶瓷层。通过 XRD、SEM 和 EDS 分析 TaC 陶瓷层。 TaC层的硬度通过纳米压痕获得。在20Nat室温载荷下,TaC层的摩擦系数、磨损率和磨损失重分别为0.17、11.3×10−5mm3/Nm和2.4mg。室温下,磨损机制以低载荷(5N、10N、15N)下的磨粒磨损为主,高载荷(20N)下以磨粒磨损和轻微粘着磨损为主。 TaC层的磨损形式根据温度变化可分为三类。
In order to improve the friction and wear properties of gray cast iron surface, TaC ceramic layer was prepared by in-situ casting-heat treatment. TaC ceramic layer was analyzed by XRD, SEM and EDS. Hardness of the TaC layer was obtained by nanoindentation. Under the loading of 20 N at room temperature, the friction coefficient values, the wear rate and the wear weight loss of TaC layer were 0.17, 11.3 × 10−5mm3/Nm and 2.4 mg, respectively. At room temperature, the wear mechanism is dominated by abrasive wear at low load (5 N, 10 N, 15 N), the abrasive wear and slight adhesive wear at high load (20 N). The wear form of TaC layer can be divided into three categories according to the temperature changes.
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