石墨化钢等温淬火后的力学性能和减振特性

与球墨铸铁比较，在石墨化钢中，由于含碳量较低，因而低强度和低塑性的石墨含量较少，这就有可能采用热塑性变形和随后热处理的方法来获得较好的强度和塑性的组合。本文对石墨化钢和球墨铸铁不同热处理后性能进行了对照分析。     

Relationship Between Coal Powder and Its Combustibility

Coal‘s volatile component ,ash and fixed carbon content have different function in different stages of a combustion process,but the traditional coal classification can precisely show its combustion property.In this experiment coal‘s evaluation indeves(ignition index Di),(burn off index Df) were used to qualitatively show the ignition property and combustion ending property of coal samples.Meanwhile,considering actual heating circumstances in calciner(in cement plants),this thesis established the relationship among the ignition index,burn off index and coal‘s industrial analysis value,which makes it possible for the user to predict the quality of coal before using it and is very valuable in practice.     

Effect of Thickness on the Structure and Tribological Properties of MoSx Coating

MoSx coatings were prepared by bipolar-pulse DC unbalanced magnetron-sputtering system with the variation of coating thickness at different Ar pressures.The composition and surface morphology were determined by using energy dispersive X-ray and scanning electron microscopy;the structural characterization was analyzed by X-ray diffraction.The friction and wear properties were investigated by fretting tests in air with less than 10% and 50% relative humidity.At 0.40 Pa pressure,(002) basal plane orientation was formed throughout the coatings.At 0.88 Pa and 1.60 Pa pressures,(002) basal plane orientation was only noticed in the first stage of coating growth(around 0.20 μm in thickness), and then edge orientations with their basal planes perpendicular to the surface would be evolved in the coatings.Humidity has a minor influence on the coatings that have(002) basal plane orientation,whereas the tribological properties of MoSx coatings with edge orientations are greatly affected by humidity.The mechanisms of coating growth and friction and wear processes are discussed.     

油藏条件下饱和度测井解释

石油，天然气勘探开发过程中的油气储层划分和油气储量评估主要依赖于油层原始含油饱和度及其它储层参数，评价油层原始含油饱和度主要有岩心直接测定，测井解释、毛管压力计算三种方法。其中计算饱和度最常用方法是电性模型(即Archic公式)，岩电实验是其基础(获得胶结指数Ⅲ和饱和度指数等)。为了得到油(气)藏真实的饱和度数据，实验室岩电测量应尽可能在接近油(气)藏条件下进行，这些条件主要包括：温度、压力、毛管压力及流体分布平衡、润湿性等。     

保温墙板稳态热传递性能的实验室测定

一、测试方法长期以来,国外对大型构件的稳态热传递性能的实验室测试做了大量的研究工作,取得了很多成果,并相继建立了有关的标准测试方法。如ASTM C236—80《防护热箱法测量建筑组合构件稳态热性能的标准试验方法》;ASTM C976—82《标定热箱法测量建筑构件热性能的标准试验方法》;JISA 1420—1981《住宅用隔热材料的隔热性能试验方法》等。ISO/DIS8990《稳态传热性质的测定——标定和防护热箱法》也已于1988年初投票通过。国内许多高等院校、科研单位也很早就开展了建筑构件的稳态热传递性能的实验室研究,亦取得了很多成果。综合国内外情况,测试设备有箱体型式