共查询到18条相似文献,搜索用时 93 毫秒
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<正> 日本旭金刚石工业公司采用EACVD法及直流等离子CVD法合成金刚石薄膜,制造了多种金刚石涂层刀具和模具。 1.在一般刀具上的应用图1为金刚石薄膜的气相合成法使用的EACVD(Electron Assisted Chemical Vapor Deposition)装置的概略图,这种方法是以热灯丝放出电子、加速使原料气体分解为特点的电子冲击CVD法。 相似文献
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类金刚石薄膜的光学性能的研究 总被引:4,自引:0,他引:4
利用脉冲真空电弧镀的方法,在硅基底上沉积类金刚石薄膜,研究薄膜的光学性能、光学常数和离子能量关系。结果表明:不同的离子能量可以得到不同折射率的薄膜,无氢类金刚石薄膜的折射率在2.5~2.7之间变化;通过改变工艺条件来制备不同折射率的薄膜,和不同折射率的基底材料相互匹配;折射率和光学能隙随离子能量具有相反的变化趋势,和理论预测的趋势相一致;对于硅、锗等红外材料,要求的薄膜应具有1.8~2.1左右的折射率,因此提出一种基于物理汽相沉积和化学汽相沉积两种相互结合的方法,来降低薄膜的折射率,以达到和硅、锗等材料的折射率匹配。 相似文献
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利用脉冲多弧离子镀技术在硅基底上沉积类金刚石薄膜。分析了类金刚石薄膜的硬度和工艺参数的关系 ,讨论了薄膜的耐磨性和化学稳定性。 相似文献
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光滑硬质合金衬底渗硼预处理对CVD金刚石薄膜性能的影响 总被引:2,自引:0,他引:2
提高金刚石薄膜的附着力和光洁度是实现CVD金刚石涂层在工模具和耐磨器件领域中广泛应用的关键因素。采用热丝CVD法在光滑WC—Co硬质合金基体表面沉积金刚石薄膜,研究了渗硼预处理新方法对光滑衬底表面抑制Co催石墨化作用和保证金刚石涂层附着力的效果。研究结果表明,采用渗硼预处理方法既能避免研磨、刻蚀和化学腐蚀等加工方法对光滑衬底表面的严重损伤,又能有效抑制Co对金刚石薄膜的不利影响,获得了满足附着力要求的光滑金刚石薄膜,对于拓宽金刚石薄膜的应用领域具有重要意义。 相似文献
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《中国制造业信息化》1994,(5)
机械期刊要文导读金刚石薄膜的性质及其应用该文是关于金刚石薄膜生长技术,生长机理、结构特性检测和应用的系列文章中的最后一篇。文章从组分纯度、力学、热学、光学、声学、电学、化学、角度较为全面地论述了通过化学气相沉积(CVD)法获得的全国石薄膜的性质。由于... 相似文献
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V. N. Amosov E. A. Azizov V. D. Blank N. M. Gvozdeva N. V. Kornilov A. V. Krasilnikov M. S. Kuznetsov S. A. Meshchaninov S. A. Nosukhin N. B. Rodionov S. A. Terent’ev 《Instruments and Experimental Techniques》2010,53(2):196-203
Results of the experimental study of boron-doped single-crystal synthetic diamond substrates and thin homoepitaxial diamond films grown on them with the predetermined properties are discussed. The homogeneity of the substrates and films is examined. Diamond detectors based on the grown diamond structures have been produced. The sensitivity of these detectors to UV photons, X and γ rays, α particles, and fast neutrons under stationary and pulsed irradiation has been determined. 相似文献
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This article investigates the failure mechanisms of CVD diamond wafers and thin films during a fast dynamic friction polishing process. To explore the evolution of temperature and stress fields, a comprehensive finite element analysis was systematically carried out, with the aid of experimental examination. It was found that the discontinuity and sharp change of the stresses across the film-substrate interface causes debonding failure of a CVD diamond thin film specimen. In the case of a CVD diamond wafer, however, the high surface tensile stress and bulk bending is responsible for the cracking. It was concluded that specimen cracking is sensitive to the polishing pressure, and that the polishing window for the CVD thin films is smaller. Polishing time is a critical factor, because a longer time corresponds to a higher thermal stress. This article points out that using the combination of a smaller polishing load and a greater sliding speed is a good option in selecting polishing parameters. To minimize cracking, a stepwise polishing process can be used. With the proper parameters obtained in this study, very smooth, high-quality surfaces of CVD diamond wafers and thin films can be produced in a short polishing duration of minutes. 相似文献
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Cr过渡层沉积粘附型CVD金刚石膜的机理研究 总被引:3,自引:1,他引:3
研究了电沉积层作为过渡层沉积CVD金刚石膜的工艺,在硬质合金的Cr电沉积层上用热丝法沉积出CVD金刚石膜。利用SEM分析了电沉积层的形貌,利用EPMA分析了H等离子处理后电沉积层的断面,利用SEM和Raman分析了金刚石膜的表面形貌、成分,利用XRD分析了过渡层和CVD金刚石膜的结合面.利用压痕法研究了金刚石薄膜与基体的结合力。结果表明,H等离子处理使得硬质合全与Cr镀层成为冶金结合,提高了电沉积层的结合强度;在Cr过渡层与金刚石膜之间形成的Cr3C2和Cr7C3等碳化物有利于金刚石的成核和膜基结合强度的提高。 相似文献
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Ş. ŢĂLU M. BRAMOWICZ S. KULESZA A. GHADERI V. DALOUJI S. SOLAYMANI M. FATHI KENARI M. GHORANNEVISS 《Journal of microscopy》2016,264(2):143-152
This paper analyses the three‐dimensional (3‐D) surface texture of growing diamond nanocrystals on Au thin films as catalyst on p‐type Si substrate using hot filament chemical vapour deposition (HFCVD). Rutherford backscattering spectrometry (RBS), atomic force microscopy (AFM), Raman, X‐ray diffraction (XRD) and scanning electron microscopy (SEM) analyses were applied also to characterize the 3‐D surface texture data in connection with the statistical, and fractal analyses. This type of 3‐D morphology allows a deeper understanding of structure/property relationships and surface defects in prepared samples. Our results indicate a promising way for preparing high‐quality diamond nanocrystals on Au thin films as catalyst on p‐type Si substrate via HFCVD method. 相似文献