| 引用本文: | 于甜甜 ，谭 俊 ，郭文才.脉冲关断时间对电刷镀Ni/CNT纳米晶镀层组织及性能的影响[J].中国表面工程,2006,(7):195~198 |
| YU Tiantian , TAN Jun , GUO Wencai.The Effect of Pulse Time-off on the Microstructure and Properties of Ni/CNT Nanocrystalline Coating by Brush Plating[J].China Surface Engineering,2006,(7):195~198 |
|
| 摘要: |
| 采用电刷镀技术制备了不同工艺参数的Ni/CNT纳米晶镀层。运用SEM、XRD、显微硬度计和T-11式球盘式磨损试验机等分析与测试方法，研究了不同工艺参数对Ni/CNT 复合镀层的表面形貌、晶粒尺寸、显微硬度和耐磨性等的影响。研究结果表明，在直流电源下使复合镀层生长速度加快，镀层表面粗糙，晶粒尺寸较大；采用脉冲电源后，随脉冲关断时间增加，复合镀层的表面平整度增加、晶粒尺寸减小、硬度和耐磨性增加；镀层的晶粒大小随加热温度的升高逐渐增大，显微硬度300 ℃以下变化不大，加热至400 ℃后显著下降。 |
| 关键词: 碳纳米管 电刷镀 复合镀层 脉冲 纳米晶 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金重点项目（50235030）；武器装备预研基金项目（编号略） |
|
| The Effect of Pulse Time-off on the Microstructure and Properties of Ni/CNT Nanocrystalline Coating by Brush Plating |
|
YU Tiantian , TAN Jun , GUO Wencai1,2
|
|
1. National Key Laboratory for Remanufacturing, Beijing, 100072, PRC;2. Beibei Military Representative Office, Chongqing Bureau, General Armaments Department, Chongqing，400700，PRC
|
| Abstract: |
| Nickle-carbon nanotube (Ni/CNT) nanocrystalline coatings with different parameter were prepared by brush plating. The SEM and XRD were applied to investigate the grain size, microstructure and morphology of the coatings. The hardness and wear mass loss of the coatings were examined on micro hardness tester and ball on disk tribotester. The results show that under a pulse-current source, the grain size of Ni/CNT coatings decreased , the coatings gained smoother surface and the microhardness and wear resistance improved when the pulse time-off became longer. The grain size of the Ni/CNT coating increased with the heating temperature .The microhardness of the Ni/CNT coating changed slightly below 300 ℃, while decreased obviously after heated up to 400 ℃. |
| Key words: CNT brush plating composite coating pulse current nanocrystalline |
