黄春杰,张正茂,雒晓涛,等.基于替代电镀硬铬的WC增强金属复合涂层疲劳性能的研究现状[J].精密成形工程,2024,16(7):205-214.
HUANG Chunjie,ZHANG Zhengmao,LUO Xiaotao,et al.Research Status of Fatigue Properties of WC Reinforced Metal Composite Coatings Based on Alternative Electroplated Hard Chrome[J].Journal of Netshape Forming Engineering,2024,16(7):205-214. |
| 基于替代电镀硬铬的WC增强金属复合涂层疲劳性能的研究现状 |
| Research Status of Fatigue Properties of WC Reinforced Metal Composite Coatings Based on Alternative Electroplated Hard Chrome |
| 投稿时间：2024-05-21 |
| DOI：10.3969/j.issn.1674-6457.2024.07.018 |
| 中文关键词: 电镀硬铬 超音速火焰喷涂(HVOF) 激光熔覆沉积(LCD) 冷喷涂(CS) 疲劳性能 |
| 英文关键词: electroplated hard chrome high-velocity oxy-fuel (HVOF) laser cladding deposition (LCD) cold spray (CS) fatigue property |
| 基金项目:中央高校基本科研业务费专项资金(D5000240161) |
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| 中文摘要: |
| 传统电镀硬铬涂层存在网纹裂纹缺陷、抗疲劳性能不足以及环境污染严重等问题，针对新一代航空工业急需新技术替代传统电镀硬铬这一迫切需求，研发新型的耐磨耐蚀涂层体系及其先进环保的再制造技术迫在眉睫。根据先进涂层技术的发展情况，研发出了基于高温熔化-凝固技术的物理气相沉积、超音速火焰喷涂以及激光熔覆技术，这在绿色制备航空工业用耐磨耐蚀涂层上表现出了一定的应用前景，并表现出了比传统电镀硬铬更长的疲劳寿命，但其仍存在内应力过高而开裂、粉末氧化或相变导致疲劳性能下降等一系列关键问题。近年来，冷喷涂涂层技术作为先进环保的新技术，凭借其低温固态沉积特性在制备金属基复合涂层上展现出了显著的冶金优势，其中冷喷涂涂层的残余压应力有助于提高零件的疲劳性能。此外，从起落架防护涂层沉积到其修复再制造环节，冷喷涂技术均可参与其中。因此，作为固态沉积工艺的冷喷涂，其在替代传统电镀铬的新型涂层制备工艺方面具有显著的应用潜力，未来的研究将集中于优化冷喷涂涂层材料和工艺上，以进一步提高其力学性能和疲劳性能。 |
| 英文摘要: |
| Conventional electroplated hard chrome coatings are associated with a number of shortcomings, including the presence of mesh cracks, inadequate fatigue properties, and significant environmental contamination. In view of the urgent requirements of the new generation aerospace industry for the replacement of electroplated hard chrome, the development of a novel wear and corrosion resistant coating system and the correspondingly advanced and environment-friendly remanufacturing technology is necessary. Based on the development of advanced coating technologies, the high-temperature melting-solidification technologies have proven to be promising, including physical vapor deposition, high-velocity oxy-fuel and laser cladding technology. These methods have demonstrated potential as green methods for the preparation of wear and corrosion resistant coatings with the improved fatigue life. However, there are still significant challenges to be overcome, including the key issues of cracking due to high internal stress, as well as the degradation of fatigue performance due to oxidation of the powder or phase transformation. Recently, as an effective solid-state deposition technology, cold spray exhibits many advantages in the preparation of metal-based composite coatings owing to its significant metallurgical advantages. The residual compressive stress generated during the deposition of cold spray coatings helps to improve the fatigue performance of the parts. In addition, cold spray can be employed in the damage repairing and part remanufacturing, as demonstrated by the deposition of landing gear protective coatings. Thus, it offers an alternative to traditional chrome plating for the coating preparation. Future research will concentrate on optimizing cold sprayed coating materials and processes with a view to further enhance their mechanical and fatigue properties. |
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