多层金刚石薄膜制备工艺和应力分析研究

采用热丝化学气相沉积方法,优化金刚石薄膜制备工艺。通过改变甲烷浓度成功制备出厚度均匀的多层金刚石薄膜,实现了多种调制周期的金刚石薄膜制备,调制周期最小至100 nm。通过拉曼光谱和X射线衍射方法对单层以及多层金刚石薄膜进行应力分析,发现单层结构中,微米金刚石薄膜应力最大,随着金刚石晶粒尺寸的减小,薄膜应力减小;多层金刚石薄膜结构中,微米层与纳米层均匀交替生长,有效地降低了薄膜应力,有利于提高金刚石薄膜在应用中的稳定性。     

Ⅱ型金刚石紫外鉴定仪的研制及其应用

本文介绍了Ⅱ型金刚石紫外鉴定仪的原理、技术方案和应用效果。该仪器经使用单位应用检验,其分选Ⅱ型金刚石的效率是红外、紫外吸收光谱法的10～15倍。花费仅为其的1%,且鉴定准确性较高。     

半经验分子轨道方法计算吸附分子几何构型的可靠性

运用半经验分子轨道AM1方法计算了金刚石（111）面上乙炔吸附分子的几何构型，通过与相似结构的丙烯分子实验参数的比较，分析论证了半经验分子轨道方法用于碳氢化合物吸附分子几何构型计算的可靠性．     

人造多晶金刚石聚结体磨损机理研究

研究了人造多晶金刚石聚结体磨损机理．结果表明，微断裂是ＰＤＣ的主要磨损机制．杂质降低人造金刚石的强度，从而降低聚晶的耐磨性．粗颗粒的人造金刚石往往含有较多的杂质．含有粗颗粒金刚石的ＰＤＣ的耐磨性较低     

Discovery of submicron diamonds within kimberlite in Liaoning Province, China and its significance

Conclusions Although the natural microdiamonds in the non-kimberlite have been well studied by Sobolev, the discovery of submicron diamonds in the kimberlite and not in the form of inclusion is still the first time in the world. Different from the common growth of the kimberlite e-clogite/peridotite with the diamond, the submicron diamonds grow together with the very thin dispersive materials with platina and blende structures. The growth process of the thin lath-shaped diamond crystals from the aggregative parent materials is observed. The densities of the aggregative parent materials are different from place to place within the microspace. The submicron diamonds and their parasitized diamonds formed in different generations.     

Polishing technology of surface for diamond film using the method of laser ablation

Conclusion Good unity in thickness and a smooth surface of diamond film are obtained by using the methods of laser ablation and machine grind to the surface of diamond film. Compared with the machine polishing method, the polishing rate increased by over 10 times. After laser ablation and machine polishing, the thickness change and the roughness of a diamond film with 400 μm thickness and 1 cm² area are 10–15 μm and 0.05 μm, and this film is basically suitable to using in electronics.     

单片机在测量人造金刚石结晶强度中的应用

采用单片机技术开发了一种微机自动测量系统，用于测量人造金刚石的结晶强度．设计出的测量系统具有体积小、重量轻、省时、省力等特点，并可对测量结果存储和显示．介绍了有关硬件和软件．设计量程５０ｋｇ时，其测量偏差为０．５４％，测量效果比较满意．     

粉末触媒在六面顶压机上合成优质金刚石研究

制备了ＮｉＭｎ急冷粉末触媒，对其组织结构进行了分析．以该粉末触媒为原料，采用二步升压工艺，在国产六面顶压机上实现了优质金刚石的高温高压合成，其合成单产为１４２ｇ，峰值粒度在２５０～３００μｍ之间．该结果对增加六面顶压机用触媒材料形态的认识具有一定的促进意义．