微观研究

Moreover, the hot compressive deformation behavior of the RS/PM AZ91 magnesium alloy and AZ91 alloy matrix composite were also investigated, the conclusions are drawn as follows:1. The processing parameters of the atomization-twin rolls quenching technology were optimized as follows: the diameter of the nozzle 1mm, the wheel velocity 25m/s, the pressure of atomization gas 0.3MPa and Ar gas for melt injection 0.1MPa. The RS AZ91 alloy flakes exhibited fine and uniform microstructures. When the flakes were extruded at 673K, extruded velocity of 0.1mm/min and extrusion ratio of 25:1,the magnesium alloy rods with clean surface, uniform dimension and excellent mechanical properties were obtained.2. The RS AZ91 magnesium alloy powders prepared by atomization-twin rolls quenched technology exhibited fine equiaxed grains with the grain size of 1-3μm, the phase constituent included supersaturate solid solution phaseα-Mg and miner fineβ-Mg_(17)Al_(12) phase. The as-extruded materials also exhibited equiaxed grains with the size of 5-7μm and a large number of fineβ-Al_(12)Mg_(17) and fewer AlMg_2Zn phases were detected in the alloy.

本文还研究了快速凝固/粉末冶金AZ91镁合金热压缩变形流变应力行为，快速凝固/粉末冶金法原位生成Mg_2Si增强AZ91镁基复合材料，经过系统的研究，获得如下结论：1、雾化-双辊急冷法在下列工艺参数组合下：双辊线速度25m/s；喷嘴直径1mm；熔体压射压力0.1MPa；雾化气体压力0.3MPa。，可获得宏观尺寸细小、微观组织均匀细小、综合性能优良的的快速凝固AZ91镁合金细碎箔带，快速凝固箔带在挤压温度为673K、挤压速度为0.1mm/min，挤压比为25：1时，可获得的外表光洁、尺寸均匀、组织性能优异的镁合金棒材。2、雾化-双辊急冷法制备的AZ91镁合金粉末态为细小等轴晶组织，晶粒尺寸1-3μm，组织为α-Mg过饱和固溶体和微量的细小β-Mg_(17)Al_(12)相组成；粉末挤压棒材为等轴晶组织，晶粒尺寸5-7μm，组织中含有大量细小的β-Al_(12)Mg_(17)以及AlMg_2Zn析出相，室温力学性能，抗拉强度383MPa，屈服强度275MPa，断后伸长率7.5%。

In this paper, first, we analyse the glass forming ability by theoretic method and experiment. Then we have the glass forming zone by experiment for our research\'s convenience. In this zone, we have detrail research on the Na_2O-TeO_2-WO_3 glasses and analyse the microstructure, raman spectra, thermal stability, crystallization of the tellurite glasses.

本文首先以玻璃形成理论为基础，分析了碲酸盐体系的成玻性能，并通过实验研究，确定了Na_2O-TeO_2-WO_3体系的成玻范围，研究了该体系玻璃的微观结构、热性能和析晶性能等。

The results show that increasing the solids loading of slurry up to 45% allows minimizing deformation of green sheets during drying and sintering process effectively. When the content of monomers in shurry is 2%-4%, and the content of plasticizer in shurry is 3%-6%, green sheets with good strength and flexibility are obtained. The microstructures and the electric characteristics of PTCR chip thermistors were investigated. A five-layer chip PTCR thermistor with room resistance of 0.8Ω, temperature coefficient of resistance of 13.40%/℃, and ratio of maximum to minimum of resistance larger than 10^5 is successfully fabricated.

研究表明：浆料固相体积分数对坯体的乾燥及烧结行为有较大影响，当浆料固相体积分数在45%以上时，可有效避免制品乾燥和烧结过程中收缩过大而产生的变形开裂缺陷；当有机单体的质量分数为2%~4%，丙三醇的体积分数为3%~6%时，可获得有一定强度和柔韧性的生坯；研究了注凝成型PTCR陶瓷的微观结构及陶瓷元件的PTCR性能，成功地制备了层数为5、室温电阻为0.8Ω、电阻温度系数为13.40%/℃、升阻比大於10^5的多层片式PTCR元件。

The results show that increasing the solids loading of slurry up to 45% allows minimizing deformation of green sheets during drying and sintering process effectively. When the content of monomers in shurry is 2%-4%, and the content of plasticizer in shurry is 3%-6%, green sheets with good strength and flexibility are obtained. The microstructures and the electric characteristics of PTCR chip thermistors were investigated. A five-layer chip PTCR thermistor with room resistance of 0.8 Ω, temperature coefficient of resistance of 13.40%/℃, and ratio of maximum to minimum of resistance larger than 105 is successfully fabricated.

研究表明：浆料固相体积分数对坯体的干燥及烧结行为有较大影响，当浆料固相体积分数在45%以上时，可有效避免制品干燥和烧结过程中收缩过大而产生的变形开裂缺陷；当有机单体的质量分数为2％~4%，丙三醇的体积分数为3％~6%时，可获得有一定强度和柔韧性的生坯；研究了注凝成型PTCR陶瓷的微观结构及陶瓷元件的PTCR性能，成功地制备了层数为5、室温电阻为0.8 Ω、电阻温度系数为13.40%/℃、升阻比大于105的多层片式PTCR元件。

The internal structure of unconsolidated and consolidated soft clay was studied by using scanning electron microscope.

利用扫描电镜研究软黏土固结前后的微观结构，采用数字图像技术研究软黏土固结过程中微孔隙的大小、数量及其分布的演化规律。

On one hand, profound understanding of harmonic oscillator model through various ways is crucial to understand the essence of quantum mechanics and research into micro physical models by means of quantum mechanics; on the other hand, the application of algebraic approach to solve the eigenvalues and wave function of mechanics is the main means to solve the actual problems in quantum mechanics.

简谐振子模型是量子力学中极其简单又重要的模型，其物理思想在其他相关的学科中都有着广泛的应用，通过多种途径去深入理解简谐振子模型，对理解量子力学的实质和运用量子力学作为工具去研究微观物理模型都有重要的意义；另一方面在实际工作中应用代数方法去求解力学量的本征值和波函数是研究量子力学的主要手段。

It is pointed out that the main tendency of this study is gradually turned from the traditional solution theory or semiempirical model to statistical mechanics theory , from primitive to nonprimitive electrolyte model, in o rder to estab lish the mo lecu lar thermodynam ic model at h igh level,which can predict them acroscopic thermodynamic properties of electrolyte solution system from the microscopic molecular and ionic parameters.

指出电解质溶液的研究已逐渐从经典的溶液理论和半经验模型转向用统计力学理论进行研究，从电解质的原始模型转向非原始模型。从分子和离子的微观参数出发建立高水平的热力学理论模型，以预测电解质溶液体系的宏观热力学性质，是发展的必然趋势。

In the method, he introduced abundant achievements of contemporary history, which include Microhistory and the "total history" of Annale School; in the main proposition, he made his individual choice on the concept of transgression of Foucault.

但是，塔夫里对文艺复兴的研究也作出了相当个人化的探索－他在方法上引入了大量的当代史学成就（包含法国的年鉴学派的总体史观、义大利的微观史学），在核心命题上也有个人化的选择－傅柯的&越界&概念成为塔夫里史学研究的最后落足点。

On the basis of previously research, this paper re-probe into the mechanism of electro-chemist mechanical manufacturing process, making the rational technological parameter, and developing the manufacturing equipment. Through a lot of technology tests, get a lot of labratory data, accordingly, researched the surface feature of the electro-chemist manufacturing process, and deeply discussed its influence on the work piece feature. The last result is that: the electro-chemist mechanical manufacturing process can reduce the low-frequency component significantly, but on high-frequency component, it has little influence, having obviously positive pole flat effect. After manufacture, the tip parts on the surface of the work piece is cut off, there is micro "high land" shape, the parameter for surface roughness is reduced a lot, the surface outline of the work piece is negative, the bearing length rate is cliffy. Also the surface quality of the work piece is improved. This can help to avoid changing the shape, improve the feature of rub, gear and reduce the time to suit. This would also ensure the precision and result in a longer work piece life.

在以前研究的基础上，本论文重新探讨了电化学机械复合光整加工工艺的机理，确定了较合理的工艺参数，对电化学机械复合光整加工设备进行了改进，通过工艺实验广泛地搜集了大量实验数据，依据实验数据，多角度地研究了电化学机械复合光整加工的表面形貌特点，并且从理论上深入讨论了电化学机械复合光整加工表面形貌对工件工作性能的影响，最后得出的结论为：电化学机械复合光整加工对工件原始表面的低频成分有较大程度的降低，而对高频成分影响较小，有明显的阳极整平作用，被加工工件表面的尖峰状凸起被去除，工件表面呈现出微观&高原型&，表面轮廓不平度高度特性参数大幅度降低，工件表面轮廓分布集中，且呈负偏态，轮廓偏斜度为负值，轮廓支承长度率曲线陡峭，工件的表面质量得到综合改善，这对提高零件的抗接触变形能力、改善摩擦、磨损性能、降低工件的磨合时间、提高工件的精度保持性、延长工件的寿命均有利。

The influence of SiO2, Fe2O3 on the thermal conductivity, melting point of risers covering flux were studied in the paper and the effect of dilative graphite on expansibility and heat-insulating property were also investigated. The high temperature microstructures and the thermal insulation mechanism were researched by scanning electron microscope.

在综合硅酸盐相图理论知识及大量国内外研究资料的基础上，着重研究SiO2、Fe2O3对保温冒口覆盖剂的导热系数、熔化温度的影响，以及膨胀石墨对冒口覆盖剂膨胀性和保温性能的影响，并利用扫描电镜分析了冒口覆盖剂高温烧结微观组织形貌及其保温机理。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。