李翠霞,杨晓永,瞿学炜,李文生,孙永江,赵久霆.石英与长石对搪瓷涂层组织和摩擦磨损性能的影响[J].表面技术,2021,50(10):221-229.
LI Cui-xia,YANG Xiao-yong,QU Xue-wei,LI Wen-sheng,SUN Yong-jiang,ZHAO Jiu-ting.Effects of Quartz and Feldspar on Microstructure and Friction and Wear Properties of Enamel Coating[J].Surface Technology,2021,50(10):221-229 |
| 石英与长石对搪瓷涂层组织和摩擦磨损性能的影响 |
| Effects of Quartz and Feldspar on Microstructure and Friction and Wear Properties of Enamel Coating |
| 投稿时间：2020-12-10 修订日期：2021-03-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2021.10.021 |
| 中文关键词: 搪瓷涂层 磨加物 裂纹 气孔率 摩擦磨损 摩擦机理 |
| 英文关键词:enamel coating grinding additive crack porosity friction and wear wear mechanism |
| 基金项目:国家自然科学基金项目(52075234，51674130);甘肃省高校产业支撑项目(2020C-11) |
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| Author | Institution |
| LI Cui-xia | State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China |
| YANG Xiao-yong | State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China |
| QU Xue-wei | State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China |
| LI Wen-sheng | State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China |
| SUN Yong-jiang | Gansu Luqiao Highway Investment Co., Ltd., Lanzhou 730000, China |
| ZHAO Jiu-ting | State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China |
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| 中文摘要: |
| 目的 通过等比例添加石英与长石，提高低碳钢搪瓷涂层的摩擦磨损性能。方法 采用一次浸搪法在Q235低碳钢表面制备等比例添加石英与长石的搪瓷涂层。采用SEM、HSR-2M型高速往复摩擦试验机，研究了不同石英与长石添加量的搪瓷涂层的组织形貌及摩擦磨损性能。结果 未添加石英与长石的搪瓷涂层硬度高、韧性差，且大气孔对裂纹形核扩展阻力小，摩擦时气孔边缘易脆性断裂。随着石英与长石添加量的增加，致使烧结体系的熔点和黏度降低，气孔形核位点增多，促进熔体扩散和气体排出，表层韧性和塑性提高，且小尺寸气孔阻碍裂纹扩展，磨屑填充气孔形成转移膜，显著降低了涂层脆性断裂倾向，发生轻微磨粒磨损和粘着磨损。然而当长石添加量过多(6%)时，Na2O的断网作用明显，致使更多Si─O键断裂，降低小气孔对裂纹扩展的阻力，因而导致涂层的耐磨性变差。结论 等比例添加石英与长石可降低涂层气孔率、提高涂层韧性，进而提高涂层的摩擦磨损性能。 |
| 英文摘要: |
| Toimprove the friction and wear properties of enamel coatings on low carbon steel by the addition of quartz and feldspar in equal proportion. The enamel coating with quartz and feldspar was prepared on Q235 low carbon steel by one-dip enameling. Scanning electron microscope and HSR-2M high speed reciprocating friction tester were utilized to study the microstructure, friction and wear properties of enamel coatings with different quartz and feldspar additions. The enamel coating without quartz and feldspar was characterized by higher hardness and lower roughness, for the large pores inside the enamel coatings had low resistance to crack nucleation and expansion, and caused brittle fracture at the pore edge during friction. With the increase of quartz and feldspar, the melting point and the viscosity of sintering system were reduced, but pores nucleation sites were increased, and the enamel melt diffusion and gas expulsion were promoted, and the toughness and plasticity of the enamel coatings were improved. By the way, the wear debris filled the small pores and the transfer film was formed, thus the fracture tendency of the enamel coatings would be significantly reduced, and mild abrasive wear and adhesive wear were main. However, when the addition of feldspar was over 6%, the network breaking effect of Na2O was obvious in the enamel coating resulting in more Si─O bond fracture and reducing the resistance of small pores to crack propagation, so the wear resistance of the coating became worse. To sum up, the equal proportion addition of quartz and feldspar in the enamel coatings will reduce its the porosity, and improve the toughness and the wear resistance contrarily. |
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