采用电子辅助化学气相沉积法（ＥＡＣＶＤ）制备了直径１２０ｍｍ、厚度１ｍｍ以上的大尺寸金刚石厚膜，这是国内已见报道的最大成膜尺寸．ＳＥＭ和Ｒａｍａｎ光谱分析表明它是一种纯晶质的多晶金刚石材料；其硬度接近天然金刚石，远高于聚晶金刚石．将这种材料加工成拉丝模具，现场拉丝结果表明其拉丝效果与天然金刚石和进口优质聚晶相当，优于国产聚晶．用这种金刚石制成的拉丝模具可广泛用于拉制钨、钼、铜和不锈钢丝．
Diamond thick films with 120mm in diameter, up to 1mm thickness were prepared by the electron-assistant chemical vapor deposition (EACVD) method. SEM, Raman
spectroscopy characterization and hardness test show that the films are pure polycrystalline diamond materials with hardness approaching to that of natural
diamond (ND) and much higher than that of polycrystalline diamond (PCD). Field tests demonstrate that the drawing effect of CVD diamond wire dies is nearly equal
to those obtained from ND and high quality PCD wire dies. This kind of CVD diamond wire die can be widely used in drawing W, Mo, Cu and stainless steel filaments.
参考文献
| [1] | Harris D C. Application of Diamond Films and Related Materials: Third International Conference, 1995: 539. [2] Sussman R S, Brandon J R, et al. Industrial Diamond Review, 1998, (3): 69--77. [3] 李文铸，陈本敬, 等. 超硬材料与工程，1998, (4): 1. [4] 将翔六, 等. 金刚石研究进展. 北京: 化学工业出版社，1991. [5] 甘晓明，冯克明，王晓玲. 金刚石与磨料磨具工程，1999, 109 (1): 35--36. |
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