将纳米Al2O3颗粒和镍基粉用湿法混合,采用等离子喷涂工艺制备了复合涂层.利用SEM和TEM分析了Al2O3复合涂层的表面形貌和微观组织,用磨粒磨损试验机进行磨损试验,研究了纳米Al2O3的体积分数、粒径对涂层喷焊性和耐磨粒磨损性能的影响.结果表明,Al2O3复合涂层的表面形貌细腻,颗粒加入能有效改善弥散相与镍基涂层的相容性,当纳米Al2O3的体积分数为2.0%时,涂层的耐磨性能最好为镍基涂层的2倍多,在相同的体积分数下,随着涂层中弥散强化相尺寸减小,涂层的耐磨性提高.
参考文献
| [1] | LU Shan-ping;Kwon Oh-yang;Guo Yi .Wear Behavior of Brazed WC/NiCrBsi(Co) Composite Coating[J].Wear,2003,254(516):421-428. |
| [2] | N. Sombatsompop;K. Sukeemith;T. Markpin;N. Tareelap .A new experimental apparatus of electro-codeposited system for Ni-WC composite coatings[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(1/2):175-188. |
| [3] | M. Surender;B. Basu;R. Balasubramaniam .Wear characterization of electrodeposited Ni-WC composite coatings[J].Tribology International,2004(9):743-749. |
| [4] | Bahrololoom ME;Sani R .The influence of pulse plating parameters on the hardness and wear resistance of nickel-alumina composite coatings[J].Surface & Coatings Technology,2005(2/3):154-163. |
| [5] | Pagounis E;Talvitie M;lindroos V K .Influence of Reinforcement Volume Fraction and Size on the Miciostructure and Abrasion Static Pressed white Iron Matrix Composites[J].Metallurgical and Materials Transactions,1996,27A(12):4171-4181. |
| [6] | Alirezaei Sh;Monirvaghefi S M;Salehi M et al.Effect of Alumina Content on Surface Morphology and Hardness of Ni-Al2O3(α)Electroless Composite Coatings[J].Surface and Coatings Technology,2004,184(2-3):170-175. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%