| 徐鲁杰,韩超,黄国胜.不同B4C含量对冷喷涂Al/B4C复合涂层防腐与耐磨性能的影响[J].装备环境工程,2022,19(8):90-102. XU Lu-Jie,HAN Chao,HUANG Guo-sheng.Influence of B4C Content on Corrosion Behaviour and Wear Resistance of Cold Sprayed Aluminium-based Boron Carbide Composite Coatings[J].Equipment Environmental Engineering,2022,19(8):90-102. |
| 不同B4C含量对冷喷涂Al/B4C复合涂层防腐与耐磨性能的影响 |
| Influence of B4C Content on Corrosion Behaviour and Wear Resistance of Cold Sprayed Aluminium-based Boron Carbide Composite Coatings |
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| DOI：10.7643/issn.1672-9242.2022.08.012 |
| 中文关键词: 铝基碳化硼 中子吸收 冷喷涂 腐蚀 磨损 涂层中图分类号:TG174 文献标识码:A 文章编号:1672-9242(2022)08-0090-13 |
| 英文关键词:boron carbide neutral absorption cold spray corrosion wear coatings |
| 基金项目:中国科学院兰州化物所固体润滑国防重点实验室开放基金(SLS 2018) |
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| Author | Institution |
| XU Lu-Jie | Naval Military Representative Office in Luoyang, Luoyang 471000, China |
| HAN Chao | State Key Laboratory for Marine Corrosion and Protection, Qingdao Branch of China State Shipbuilding Corporation, Ltd.724th Research Institute, Qingdao 266237, China |
| HUANG Guo-sheng | State Key Laboratory for Marine Corrosion and Protection, Qingdao Branch of China State Shipbuilding Corporation, Ltd.724th Research Institute, Qingdao 266237, China |
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| 中文摘要: |
| 目的 分析不同B4C含量对冷喷涂Al/B4C复合涂层防腐和耐磨性能的影响，探索利用冷喷涂低温特点制备Al/B4C复合涂层的可行性。方法 利用冷喷涂方法制备4种B4C含量的Al/B4C复合涂层，并利用各种方法表征涂层的结合特征、耐磨性能和防腐性能。结果 冷喷涂过程不会改变铝和碳化硼的物相，碳化硼颗粒主要以嵌入方式结合在涂层中，会产生结合缺陷。在本研究中，B4C的质量分数最高可达到34.53%左右，涂层的结合强度随粉末中碳化硼含量的增加先增加、后降低，最高可达26.67 MPa。微区电化学试验分析涂层内部微电位差值，发现Al/B4C界面存在电位差，腐蚀反应会优先在Al/B4C界面发生，从而破坏金属Al成膜，使涂层的耐蚀性能与略低于铝块材。结论 冷喷涂技术可以制备微观结构和结合性能良好的高B4C含量Al/B4C复合涂层，涂层中B4C的质量分数最高达34.53%，预期具有良好的热中子吸收性能。同时，B4C颗粒的加入，使得涂层的耐磨性能大大的提升，但是耐蚀性能相比于铝材料略有降低，是未来需要改善的方向。 |
| 英文摘要: |
| Al/B4C composites materials are widely used as storage vessels for nuclear waste and nuclear reaction shielding device for its excellent anticorrosion, wear resistant and anti-neutron radiation performances. However, Al/B4C composite materials suffer from low structure strength, oxidation and decomposition in sintering process. Cold spray technology is considered to be an ideal method to prepare Al/B4C composites materials. There is few report on the properties influenced by the B4C content. In this paper, Al/B4C composites coatings were deposited on Q235 steel substrate with 4 kinds of B4C content. SEM, SKP, and BS methods were used to characterize the coatings. The results indicate that excellent Al/B4C coating can be deposited by cold spray. The highest bonding strength can reach 26.67 MPa as the B4C is 30%. The coating can decrease the wear rate significantly as the B4C content is more than 20%. But the uniformity of the coating decreases as the B4C content increases, which increase the risk of coating corrosion. |
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