当前位置: X-MOL 学术Surf. Rev. Lett. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
TRIBOLOGICAL PROPERTIES OF THE CARBON AND NITROGEN-BASED HARD FILMS SLIDING AGAINST THE NICKEL-BASED SUPERALLOY
Surface Review and Letters ( IF 1.1 ) Pub Date : 2020-01-09 , DOI: 10.1142/s0218625x1950197x
X. L. LEI 1 , B. X. YANG 1 , Y. HE 1 , F. H. SUN 2
Affiliation  

This study is focused on the tribological properties of micro- and nano-crystalline diamond (MCD and NCD), non-hydrogenated and hydrogenated diamond-like carbon (DLC and DLC-H) and nitrogen-based (CrN, TiN and TiAlN) coatings sliding against the super alloy Inconel 718, in terms of the maximal and average coefficients of frictions (COFs), the worn morphologies and the specific wear rates, by the rotating ball-on-plate configuration under dry condition. The results show that the nitrogen-based films show comparable COFs and wear rates with the WC–Co substrates. The DLC and DLC-H show lower COFs compared with the nitrogen-based films. Furthermore, their wear resistance is limited due to their low thickness compared with MCD and NCD, which have the same elemental composition. The DLC-H coating exhibits much lower wear rate compared with the DLC coating, which may be derived from the passivation of dangling bonds by the linking of H to C atoms. The MCD and NCD films show the lowest average COFs and mild wear after tribotests, due to their high hardness and low adhesive strength between pure diamond and the super alloy.Among all the tested films, the NCD film-based tribopair presents the lowest maximal and average COFs, tiny wear debris particles, mild wear of ball and plate without scratching grooves, indicating that the NCD film may be suitable to be deposited on cutting tools for super alloy machining.

中文翻译:

碳和氮基硬膜在镍基高温合金上滑动的摩擦学特性

本研究的重点是微晶和纳米晶金刚石(MCD 和 NCD)、非氢化和氢化类金刚石碳(DLC 和 DLC-H)和氮基(CrN、TiN 和 TiAlN)涂层的摩擦学性能通过在干燥条件下旋转的板载球配置,在最大和平均摩擦系数 (COF)、磨损形态和特定磨损率方面与超级合金 Inconel 718 滑动。结果表明,氮基薄膜显示出与 WC-Co 基材相当的 COF 和磨损率。与氮基薄膜相比,DLC 和 DLC-H 显示出较低的 COF。此外,由于与具有相同元素组成的 MCD 和 NCD 相比,它们的厚度较低,因此它们的耐磨性受到限制。与 DLC 涂层相比,DLC-H 涂层的磨损率要低得多,这可能是由于 H 原子与 C 原子的连接使悬空键钝化所致。MCD 和 NCD 薄膜在摩擦测试后表现出最低的平均 COF 和轻微磨损,这是由于它们的高硬度和低纯金刚石与超级合金之间的粘合强度。在所有测试薄膜中,基于 NCD 薄膜的摩擦对呈现最低的最大值和平均COF,微小的磨屑颗粒,球和板的轻度磨损,没有划伤凹槽,表明NCD膜可能适合沉积在用于超级合金加工的刀具上。
更新日期:2020-01-09
down
wechat
bug