氟化类金刚石薄膜的沉积及性能研究现状

类金刚石薄膜是 80年代初出现的新型非金属薄膜材料之一 ,其优异的综合性能引起了人们极大的兴趣。本文对类金刚石薄膜的近期进展进行了概括性介绍 ,重点介绍在此基础上发展起来的氟化类金刚石薄膜材料 (FDLC) ,包括氟元素对类金刚石薄膜 (DLC)在结构、性能及在沉积工艺上所带来的的影响等。     

一种制备c-BN表面硬化层的新方法

立方氮化硼(c-BN)是一种倍受重视的类金刚石材料。在迄今发现的所有物质中，其硬度居第二位(仅次于金刚石)。此外，c-BN还具有远比金刚石高的热稳定性，极其优良的半导体性和光学性能。因此，c-BN在高温耐磨零件，切削刀具、高温电子元件和光学仪器上得到广泛应用。目前所采用的c-BN薄膜的制备方法主要是：化学气相沉积(CVD)、物理气相沉积     

金刚石绳锯机切割拆除工艺在沈铁高速公路改扩建项目中的应用

针对沈阳(王家沟)至铁岭(杏山)高速公路改扩建工程中跨越省道、铁路的桥梁,对比分析人工拆除、机械拆除、金刚石绳锯机切割拆除等拆除工艺,结合工程实际情况,最终采用金刚石绳锯机切割拆除工艺对旧桥进行拆除。制定详细的梁板拆除方案,并分析金刚石绳锯机切割拆除工艺的优点,实践表明,金刚石绳锯机切割拆除工艺具有良好的经济效益和安全效益,具有广泛的应用前景。     

用复合电镀法制造金刚石工磨具

本文简述了金刚石工磨具的特点及发展前景,研究了用复合电镀法制造金刚石工磨具的工艺过程和工夹具的设计:讨论了PH、阴极电流密度等电镀工艺参数的控制范围及制造中的注意事项。     

双离子束溅射淀积DLC膜的结构分析

用双离子束溅射法在５０℃以下的基底上淀积了类金刚石（ＤＬＣ）膜。对ＤＬＣ膜采用扫描电子显微镜、透射电子显微镜及拉曼谱仪进行了结构分析。通过对扫描电子显微镜观察，发现在ＤＬＣ膜中存在金刚石微晶。通过透射电子显微镜分析，确定金刚石微晶具有面心立方结构，计算出的晶格常数与标准值基本相同。通过拉曼光谱分析后，进一步验证了薄膜中金刚石微晶的存在并得出了膜中ＳＰ＾３Ｃ－Ｃ键所占的比例。     

润滑冷却液提高金刚石锯片切削寿命的机理研究

本文讨论了润滑冷却液对金刚石－岩石、胎体－岩石摩擦副的润滑作用，认为使用润滑冷却液是可以大幅度提高金刚石锯片的寿命，最后用实例证实了上述结论的正确性。     

功率压力智能测控仪的研制

论述了人造金刚石合成压力机的功率压力智能测控仪的硬件工作原理和软件系统结构．     

纳米金刚石热浸渗高速钢刀具表面强化技术

为了改善高速钢刀具切削性能,提出了纳米金刚石热浸渗技术,该技术使钢表面的微观组织结构发生了变化,致使材料的物理性能也发生了改变,实现高速钢刀具表面的强化；通过两组刀具的切削试验,即切削力、刀具寿命和刀具磨损的对比,得出处理过的高速钢刀具切削加工性能得到很大的改善,纳米金刚石热浸渗技术强化高速钢刀具具有巨大的应用价值.     

粉煤灰在沥青混凝土中的应用

粉煤灰是发电厂的副产品，即煤燃烧后剩余的炉渣，经碎渣机粉碎后，形成的一种粉状物质鹤岗市新华发电厂从投产以来，年排放粉煤灰20万t／年，除少量用于水泥原料的制做，绝大部分被排放和倾倒，不仅对环境保护影响较大，而且还造成了资源的大量浪费。     

磁盘基片超精密切削加工技术的研究

根据铝合金磁盘基片的加工技术要求,分析了铝合金磁盘基片超精密切削加工的工艺特点,提出了超精密车床的结构要求,给出了金刚石刀具的几何参数.     

Fabrication and drilling tests of chemical vapor deposition diamond coated drills in machining carbon fiber reinforced plastics

Chemical vapor deposition (CVD) diamond coated drills are fabricated by depositing diamond films on Co-cemented tungsten carbide (WC-Co) drills. The characteristics of as-deposited diamond coatings are investigated by scanning electron microscope (SEM) and Raman spectra. To evaluate the cutting performance of diamond coated drills, comparative drilling tests are conducted using diamond coated and uncoated WC-Co drills, with carbon fiber reinforced plastics (CFRPs) as the workpiece on a high-speed computer numerical control (CNC) machine. Thrust force and tool wear are measured during the drilling process. The results show that diamond coated drill exhibits better cutting performance, compared with the uncoated drill. The value of flank wear is about 70 μm after machining 90 holes, about a half of that of theWC-Co drill with 145μm after drilling only 30 holes. The wear rate of WC-Co drill is higher than that of diamond coated drill before diamond films peeling off. The diamond coated drill achieves more predictable hole quality. The improved cutting performance of the diamond coated drill is due to the high hardness, wear resistance and low coefficient of friction.     

Friction and wear performances of hot filament chemical vapor deposition multilayer diamond films coated on silicon carbide under water lubrication

Tribological properties of chemical vapor deposition (CVD) diamond films greatly affect its application in the mechanical field. In this paper, a novel multilayer structure is proposed, with which multilayer diamond films are deposited on silicon carbide by hot filament CVD (HFCVD) method. The different micrometric diamond grains are produced by adjusting deposition parameters. The as-deposited multilayer diamond films are characterized by scanning electron microscope (SEM) and white-light interferometry. The friction tests performed on a reciprocating ball-on-plate tribometer suggest that silicon carbide presents the friction coefficient of 0.400 for dry sliding against silicon nitride (Si₃N₄) ceramic counterface. With the water lubrication, the corresponding friction coefficients of silicon carbide and as-deposited multilayer diamond films further reduce to 0.193 and 0.051, respectively. The worn surfaces indicate that multilayer diamond films exhibit considerably high wear resistance.     

修制磨削摆线轮齿形砂轮过程中金刚轮圆头中心轨迹的寻求

研究了修制磨削摆线轮齿形砂轮过程中金刚轮圆头中心轨迹的寻求方法，导出了其直角座标方程式，确定了金刚轮圆头半径的最佳值，运用作者编制的相应软件所得出的结果。解决了现场被加工摆线轮齿形超差问题。效果显著。     

�ۺ��ѵ����ź�������������ϵͳģ�ͼ�ʵʩ

本文研究了如何使用模型来分析建立包含高速公路干线、匝道控制和上游信号控制的菱形立交的一个综合控制系统。本建模方法考虑到了很多方面因素，包括其组成部分、运营特性及系统内的互动作用。论文还提出了系统现场实施运营可能需要的具体措施。建立综合运营控制系统的最关键的因素是通过在钻石立交信号机中特定信号配时来处理匝道反馈信息。当管匝道上排队较长时，系统将通过自动调整来减少进入匝道的车流量，以保证匝道控制系统的有效性，避免匝道排队过长，减少高速公路瘫痪的可能性。由于该系统采用特殊信号相位和配时方法，其控制策略主要针对特定的钻石信号相位计划。文章还介绍了该系统的设计和构架以及现场实施的流程图。     

Double-Sided Optimization of ITS Data Aggregation Via Wavelet Transformation

This paper addresses a modeling approach to analyzing an integrated system that includes freeway mainlines, ramp metering, and an upstream signalized diamond interchange. The modeling approach takes into consideration of the various components, their operational characteristics, and their interactions within the system. Strategies are also proposed for real-time operation and possible field implementation. The key element of achieving an integrated operation is to control the ramp feeding the traffic through special signal timings at the diamond interchange. Whenever a long queue is detected at the metered ramp, the signal timing should be adjusted to reduce the traffic flows entering the ramp. In this way, the ramp meter will remain in operation as long as possible, which would delay the onset of queue flush (i.e., termination of ramp meter) and minimize the possibilities of a freeway breakdown. Because a diamond interchange is usually controlled by special signal phasing and timing, the control strategies are specially focused on the special diamond signal phasing schemes. The system design and system architecture are also presented for potential deployment of the system in the field.     

微扰场下Ni纳米圆环磁结构的微磁学研究

以微磁学理论为基础,采用三维动力学模型研究了Ni纳米铁磁圆环的微磁结构与体系结构参数的关系,以预测纳米铁磁圆环体系的磁特性。结果表明：在内外半径比一定的条件下,外半径较小时,体系的磁结构只是单一的“一致”态;外半径较大时,磁结构不仅有“蜗旋”态和“洋葱”态,而且出现马蹄”态以及特殊“洋葱”态。并对各种磁结构的反转形式以及反转速度进行了研究;在反磁化过程中,对于“一致”态、“蜗旋”态以及特殊“洋葱”态磁结构,体系磁矩基本是沿厚度方向变化;而“洋葱”态磁结构,则沿三维空间变化（但始终保持磁矩在膜面内的分量基本不变）。另外,随外半径增大,“蜗旋”态磁结构的反转时间变化微弱;“洋葱”态的反转时间迅速缩短;“马蹄”态随外半径增大,开关时间明显缩短。并对结果进行了定性的解释。     

Mist-jetting Electrical Discharge Dressing Technology for Superabrasive Grinding Wheels

The technology of superabrasive grinding has been developed in order to achieve high-quality finish in extremely hard and brittle materials.Thereafter, truing and dressing technology on super abrasive grinding wheel is one of the most important subjects on precise machining field at present.In this paper, mist-jetting electrical discharge technology was applied to dressing metal-bonded superabrasive wheels.And a systematical study on the mechanism of selective removal of the bond was proposed.Experiments on dressing bronze bonded diamond grind wheels were carried out on a die-sinking electrical discharge machine.The diamond wheel topographies before and after electrical discharge dressing were observed by VH-800 3D digital microscope.The wheel profiles before and after dressing were observed.The results of electrical discharge dressing under different electrical parameters were compared.Experimental results indicate that the favorable surface topography can be obtained under suitable processing parameters and mist-jetting electrical discharge dressing(MEDD) is feasible for metal-bonded diamond grinding wheel.     

京杭运河徐扬段续建二期船闸工程水位系统分析

文章介绍了京杭运河徐扬段续建二期工程中三线船闸工程水位系统在新情况下所受的一些影响,主要有现行水位系统与相关《标准》及《规范》的不协调、与船型发展的不协调、南水北调工程的影响、特殊自然条件的影响等几方面.提出了《规范》与《标准》应与实际需要相协调、应推行船型的标准化、应深入研究南水北调对徐扬段运河水位的影响等几点建议.