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．     

SNA体系结构和OSI参考模型的分析

介绍了IBM提出的系统网络体系结构SNA（Systems Network Architecture）和OSI（Open Systems Interconnection）参考模型的网络体系结构，并对其进行分析对比。     

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．     

A New Method for Dressing Fine Grain Diamond Wheels——the Soft-Elastic Dressing Method

IntroductionInrecentyears,ceramicshavebeenmuchmorewidelyusedinthefieldsofoptics,electronics,abrasion-resistancepartsandthermalresistanceparts.Ceramicsareveryhardandchemicallyinert,havehighthermalresistance,highabrasionresistanceandlowelectricalconductivity.Buttheyareratherdifficulttomachinebecauseoftheirhardnessandbrittleness.Grindingwithfinegraindiamondwheelsisanefficientmethodforpreciseandultra-precisemachiningofceramics.Beforegrinding,thefinegraindiamondwheelrequiresdressing.Thedressingpro…     

大麻快速化学脱胶工艺初探

主要对应用预氧处理和预尿氧处理以及预尿氧处理分别与一煮法和二煮法结合的大麻脱胶工艺的效果作了初步的探索,提出预尿氧处理与一煮法结合的大麻快速化学脱胶方法将会有广阔的发展前景.     

热丝CVD法制备金刚石膜

采用热灯丝CVD、分次连续沉积的办法在硅衬底上制备金刚石膜．用RAMAN光谱、X-ray衍射、扫描电子显微镜(SEM)等多种技术对金刚石膜的形貌、成份、晶态等特性进行了分析，证实所获膜质量较好。