通过对金刚石表面盐浴镀Cr,采用扫描电子显微镜(SEM)、能谱仪(EDS)及X射线衍射仪(XRD)观察并分析镀层的形貌、生长、结构及结合力,并研究了镀层厚度的可控及形成机制.结果表明,镀层的形成先由Cr与金刚石表面的C原子反应生成碳化物,反应充分后碳化物层主要为Cr7C3相;镀层反应扩散充分后表面吸附多余的Cr形成一层纯Cr相层.最佳盐浴镀覆工艺在750 ～ 850℃保温60 min,通过改变镀覆温度或保温时间可得到可控厚度的镀层,其厚度为0.75～3 μm.另外,当镀层厚度超过3 μm在冷却过程中会直接开裂开脱.在形成包覆较好的镀层下,镀层厚度越薄与基体的结合能力就越强.
参考文献
| [1] | 项东,李木森,许斌,刘科高.镀覆金刚石技术的研究进展[J].超硬材料工程,2006(03):44-49. |
| [2] | 王艳辉,王明智,臧建兵,郑炀曾.超硬材料系列镀覆产品及应用[J].金刚石与磨料磨具工程,2002(03):21-24. |
| [3] | 高涛,彭伟,姚春燕.金刚石表面处理的应用和发展[J].金刚石与磨料磨具工程,2004(03):6-9. |
| [4] | Sergio Nogales;Helmut J. Boehm .Modeling of the thermal conductivity and thermomechanical behavior of diamond reinforced composites[J].International journal of engineering science,2008(6):606-619. |
| [5] | 宋月清,夏扬,谢元锋,林晨光,郭志猛,曲选辉.金刚石热管理材料的研究进展[J].超硬材料工程,2010(01):1-8. |
| [6] | Breval E.;Cheng J. .Development of Titanium Coatings on Particulate Diamond[J].Journal of the American Ceramic Society,2000(8):2106-2108. |
| [7] | 唐达培,高庆.钛过渡层对CVD金刚石膜热残余应力的影响[J].材料热处理学报,2008(01):176-179. |
| [8] | 吕反修.化学气相沉积金刚石膜的研究与应用进展[J].材料热处理学报,2010(01):15-28. |
| [9] | Zhu YF.;Yao WQ.;Cao LL.;Wang L. .The interface diffusion and reaction between Cr layer and diamond particle during metallization[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2001(1/2):143-150. |
| [10] | Zhu Yongfa;Zheng Bin;Cao Lili;Yao Wenqing .Application of AES line shape analysis for the identification of interface species during the metallization of diamond particles[J].Surface and Interface Analysis: SIA: An International Journal Devoted to the Development and Application of Techniques for the Analysis of Surfaces, Interfaces and Thin Films,1999(1):254-257. |
| [11] | Andrey M. Abyzov;Sergey V. Kidalov;Fedor M. Shakhov.High thermal conductivity composite of diamond particles with tungsten coating in a copper matrix for heat sink application[J].Applied thermal engineering: Design, processes, equipment, economics,2012:72-80. |
| [12] | Chuprina V G .Physicochemical interaction and structure development during the formation of metal gas-transfer coatings on diamond(Review) Ⅰ Kinetics[J].Soviet Powder Metall Met Ceram,1992,31(07):578-583. |
| [13] | Chuprina V G .Physicochemical interaction and structure development during the formation of metal gas-transport coatings on diamond(Review) Ⅱ Mechanism[J].Soviet Powder Metall Met Ceram,1992,31(08):687-692. |
| [14] | 孔见.盐浴法金刚石表面镀铬研究[J].常州工学院学报,2003(04):12-14. |
| [15] | 汤小文,刘清友.金刚石的盐浴镀钨[J].西南石油学院学报,1998(04):63-65. |
| [16] | 项东 .金刚石表面化学镀覆技术的应用研究[D].山东大学,2006. |
| [17] | 王强 .表面金属化—共沉积法制备金刚石/铜基封装材料的研究[D].天津大学,2008. |
| [18] | 叶大仑;胡建华.实用无机热力学数据手册[M].北京:冶金工业出版社,2002:4-7. |
| [19] | T. Schubert;L. Ciupinski;W. Zielinski .Interfacial characterization of Cu/diamond composites prepared by powder metallurgy for heat sink applications[J].Scripta materialia,2008(4):263-266. |
| [20] | 卢金斌,席艳君,王志新.Ni-Cr合金真空钎焊金刚石的碳化物生长及位向关系[J].中国有色金属学报,2010(01):137-142. |
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%