LIN Li*,HAN Hua.Comparison of Mechanical Properties of Ni/WC Composite Coating and Ni-W Alloy Coating[J].Plating & Finishing,2022,(8):7-12.[doi:10.3969/j.issn.1001-3849.2022.08.002]
Ni/WC复合镀层与Ni-W合金镀层力学性能比较
- Title:
- Comparison of Mechanical Properties of Ni/WC Composite Coating and Ni-W Alloy Coating
- Keywords:
- pure Ni coating ; Ni/WC composite coating ; Ni-W alloy coating ; hardness ; toughness ; tensile strength
- 文献标志码:
- A
- 摘要:
- 在 Q235 钢表面分别制备纯 Ni 镀层、 Ni/WC 复合镀层、 Ni-W 合金镀层，测试并表征了不同镀层的成分、晶相结构、硬度、韧性、弹性及抗拉强度。结果表明： Ni/WC 复合镀层中 WC 颗粒弥散分布，含量约为 6.52% 。 Ni-W 合金镀层的成分以 Ni 和 W 元素为主， W 元素质量分数达到 34.2% 。与纯 Ni 镀层相比， Ni/WC 复合镀层和 Ni-W 合金镀层的硬度分别提高了约 112 HV 、 232 HV ，抗拉强度分别提高了 240 MPa 、 420 MPa 。 Ni 与 W 诱导共沉积形成置换固溶体起到细化晶粒和固溶强化的作用，使 Ni-W 合金镀层的平整度和致密性明显好于 Ni/WC 复合镀层，抵抗塑性变形能力和弹性恢复能力增强，能够较大幅度提高 Q235 钢制件整体性能。
- Abstract:
- ： Pure Ni coating ， Ni/WC composite coating and Ni-W alloy coating were prepared on the surface of Q235 steel respectively ， and the composition ， crystal phase structure ， hardness ， toughness ， elasticity and tensile strength of different coatings were characterized and tested. The results showed that WC particles was distributed diffusing in Ni/WC composite coating and its content was about 6.52% ， Ni-W alloy coating was mainly composed of Ni and W ， and the mass fraction of W reached 34.2%. Compared with pure Ni coating ， the hardness of Ni/WC composite coating and Ni-W alloy coati ng was increased by 112 HV and 232 HV ， and the tensile strength was increased by 240 MPa and 420 MPa ， respectively. The replacement solid solution formed by Ni and W induced co-deposition plays a role in grain refinement and solution strengthening ， so the flatness and compactness of Ni-W alloy coating were obviously better than that of Ni/WC composite coating ， and the plastic deformation resistance and elastic recovery ability were enhanced ， it can greatly improve the overall performance of Q235 steel parts.
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备注/Memo
收稿日期： 2021-06-20 修回日期： 2021-12-06 作者简介： 林立（ 1981 －），男，硕士，讲师，主要研究方向：机械工程材料、力学、特种加工技术等， email ： KFDXLL0000@126.com