| 引用本文: | 刘蕴锋， 朱永伟， 刘平， 刘婷婷.MoS2颗粒表面包覆Al2O3及其在镀层中的应用[J].中国表面工程,2012,25(2):97~102 |
| LIU Yun-feng, ZHU Yong-wei, LIU Ping, LIU Ting-ting.Surface Coating and Application in Plating of MoS2 Powders with Al2O3[J].China Surface Engineering,2012,25(2):97~102 |
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| 摘要: |
| 采用非均匀形核法将Al2O3包覆到MoS2颗粒表面，提高颗粒的亲水性能。研究了溶液pH值、Al(NO3)3的摩尔浓度和预处理工艺对包覆率的影响；采用SEM及EDS分析了包覆前后MoS2颗粒的微观形貌和表面成分；通过测量接触角研究了颗粒表面的亲水性。结果表明，颗粒表面均匀包覆了一层Al(OH)3；溶液pH值对包覆率的影响最大，Al(NO3)3的摩尔浓度次之。最佳工艺为：溶液pH值为5.5，Al(NO3)3浓度为0.15 mol/L，预处理过程不添加表面活性剂。随着包覆率的提高，MoS2颗粒的亲水性提高。利用包覆Al2O3的MoS2制得了Ni-P-MoS2化学复合镀层，提高了镀层中沉积粒子的均匀致密性。 |
| 关键词: 包覆 非均匀形核 二硫化钼 亲水性 Ni-P-MoS2 复合镀层 |
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| 基金项目:国家自然科学基金(51175260)；江苏省摩擦材料学重点实验室开放基金（kjsmcx0901） |
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| Surface Coating and Application in Plating of MoS2 Powders with Al2O3 |
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LIU Yun-feng, ZHU Yong-wei, LIU Ping, LIU Ting-ting
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College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016
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| Abstract: |
| MoS2 particles were coated with Al2O3 layer by using heterogeneous nucleation process to improve the hydrophilicity. The pH, molar concentration of Al(NO3)3 and pretreatment on coating ratio was studied. The micromorphology and surface composition of MoS2 particles with or without coating were analyzed by SEM and EDS. The hydrophilicity of MoS2 particles was characterized by contact angle. The results show that a homogeneous layer of Al(OH)3 is formed on the surface of MoS2 particles, the pH value affects coating properties most and molar concentration of Al(NO3)3 secondly. The coating ratio reaches 34.05% at the pH of 5.5, concentration of 0.15 mol/L Al(NO3)3 and no sufactant in pretreatment. The hydrophilicity of MoS2 particles improves by the increase of coating ratio. The Ni-P-MoS2 electroless composite coating with well distributed is prepared by using Al2O3-coated MoS2 particles. |
| Key words: coating heterogeneous nucleation process MoS2 hydrophilicity Ni-P-MoS2 composite coating |
