麻恒,赵晓兵,魏坤霞,罗琪,刘细良,胡静.42CrMo4钢硼氮离子复合渗与离子渗氮对比研究[J].表面技术,2022,51(4):121-126.
MA Heng,ZHAO Xiao-bing,WEI Kun-xia,LUO Qi,LIU Xi-liang,HU Jing.Comparative Study on Plasma Boron-Nitriding and Plasma Nitriding for 42CrMo4 Steel[J].Surface Technology,2022,51(4):121-126 |
| 42CrMo4钢硼氮离子复合渗与离子渗氮对比研究 |
| Comparative Study on Plasma Boron-Nitriding and Plasma Nitriding for 42CrMo4 Steel |
| 投稿时间：2021-05-18 修订日期：2021-08-30 |
| DOI：10.16490/j.cnki.issn.1001-3660.2022.04.011 |
| 中文关键词: 42CrMo4钢 硼氮离子复合渗 离子渗氮 渗层 耐磨性 耐蚀性 |
| 英文关键词:42CrMo4 steel plasma boron-nitriding plasma nitriding nitriding layer wear resistance corrosion resistance |
| 基金项目:国家自然科学基金(21978025，51774052);江苏省优势学科建设项目(PAPD-3);江苏高校品牌专业建设工程资助项目(TAPP) |
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| Author | Institution |
| MA Heng | Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou 213164, China ;Huaide College, Changzhou 213164, China |
| ZHAO Xiao-bing | Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou 213164, China ;Huaide College, Changzhou 213164, China |
| WEI Kun-xia | Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou 213164, China ;National Experimental Demonstration Center for Materials Science and Engineering, Changzhou University, Changzhou 213164, China |
| LUO Qi | Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou 213164, China ;Huaide College, Changzhou 213164, China |
| LIU Xi-liang | Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou 213164, China ;National Experimental Demonstration Center for Materials Science and Engineering, Changzhou University, Changzhou 213164, China |
| HU Jing | Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou 213164, China ;National Experimental Demonstration Center for Materials Science and Engineering, Changzhou University, Changzhou 213164, China |
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| 中文摘要: |
| 目的 为了进一步提高42CrMo4钢离子渗氮层的硬度，研发硼氮离子复合渗创新技术，并与离子渗氮层特性进行对比研究。方法 在520 ℃、6 h的相同工艺条件下，对42CrMo4钢分别进行硼氮离子复合渗和离子渗氮处理。利用光学显微镜、XRD、显微硬度计、摩擦磨损测试机和电化学工作站对截面显微组织、物相、截面硬度、耐磨性和耐蚀性进行测试和分析。结果 硼氮离子复合渗可显著提高渗氮效率，在520 ℃、6 h工艺条件下，化合物层厚度由18.78 μm增加到29.44 μm，有效硬化层厚度由265 μm增加到355 μm。同时，硼氮离子复合渗后在渗层形成了硼铁化合物FeB和Fe2B，显著提高了渗层的硬度和耐磨性;表面硬度由750HV0.05提高至1 002HV0.05，耐磨性和耐蚀性明显提高，磨损率由3.06 mg/cm2下降到1.02 mg/cm2;自腐蚀电位由–648.89 mV提高至–494.32 mV。结论 与离子渗氮相比，硼氮离子复合渗具有显著优势，不仅可以提高离子渗效率，还可显著提升渗层性能，包括渗层硬度、耐磨性和耐蚀性。 |
| 英文摘要: |
| The work aims to develop plasma boron-nitriding (PNB) technology to further improve the hardness of 42CrMo4 steel nitriding layer and comparatively study the properties of plasma nitriding layer. Under the same technological conditions of 520 ℃ and 6 h, 42CrMo4 steel was treated by plasma boron-nitriding and plasma nitriding, respectively. The cross-sectional microstructures, phase compositions, cross-sectional hardness, wear and corrosion resistance of the nitriding layer was tested and analyzed by optical microscope, XRD, microhardness tester and wear tester and electrochemical workstation. PNB significantly increased the nitriding efficiency. Under the technological conditions of 520 ℃ and 6 h, the thickness of compound layer and effective hardening layer increased from 18.78 μm to 29.44 μm, and 265 μm to 355 μm, respectively. Meanwhile, FeB and Fe2B were formed in the surface layer after plasma boron-nitriding, which significantly improved the hardness and wear resistance of nitriding layer. The surface hardness increased from 750HV0.05 to 1 002HV0.05, and both wear and corrosion resistance were obviously enhanced. The wear rate was decreased from 3.06 mg/cm2 to 1.02 mg/cm2, and the self-corrosion potential was increased from –648.89 mV to –494.32 mV. Compared with plasma nitriding, plasma boron- nitriding has obvious advantages, which can not only improve the efficiency of plasma nitriding, but also significantly improve the properties of the nitriding layer, including hardness, wear resistance and corrosion resistance. |
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