贵金属的化学发光分析

介绍化学发光分析的基本原理和测试技术,及其应用于测定贵金属的几种化学发光反应,并展望其前景。     

Ce对过共晶Al—Si合金熔体粘滞性和结构的影响

研究了Ce对Al—16％Si合金熔体粘滞性的影响。结果表明：Ce的加入增加了合金熔体的粘度，且随着Ce含量的增加粘度值也增加。结合加入Ce的Al—16％Si合金氢含量的变化、凝固组织和DSC曲线研究了熔体结构的变化，分析了粘度与液态结构变化之间的关系。     

Stability of AB5-type hydrogen storage alloys

In this paper, we deduced an empirical equation for predicting the stabilities of the hydrides of AB₅-type compounds with the consideration of the effects of geometrical factor and electric factor. The theoretical curves derived from this equation are in good agreement with the test results of La_1−xCa_xNi₅, Ml_1−xCa_xNi₅ and La_1−xCe_xNi₅ compounds. With this model, we can easily interpret the phenomenon that the initial partial substitution of R by Ca in R_1−xCa_xNi₅ (R is rare earth metal) compounds cause an increase of hydrogen desorption pressure to a maximum value, whereas in the range of larger Ca content x the hydrogen desorption pressure decreases with increasing x.     

第九届CIMT(2005)磨料磨具展品评述

第九届中国国际机床展览会于2005年4月在北京举行。本文对参展的磨料磨具主要展品及展商的情况作了较为全面详细的介绍，并就展会反映出的新的产品生产技术，产品及市场发展趋势和市场竞争策略进行分析。作者认为，在今后一个时期，新型结合剂的开发是促进产品技术发展的重要因素，提供与磨具配套的磨削技术服务成为市场竞争的重要手段。     

TRIZ理论中物质-场的不同应用

通过对飞机发动机机罩概念设计中的物-场分析，简要概括了在实际的概念设计中应该如何应用和把握物质-场分析的侧重点。     

Study of stability of high‐temperature polyimides using TG/MS technique

The oxidative stability of the carbon fiber‐reinforced composite of polyimide was examined, in real time, using the evolved gas analysis techniques. Off‐gas degradation products suggested the onset temperature for chain scissions to be fairly low at about 190–220°C. Based on the off‐gas products present and the trend of their release, the composite degradation mechanism appeared to be similar between 190 and 371°C, thereby marking 371°C to be the highest accelerated aging temperature for its long‐term lifetime prediction. Beyond 371°C, different degradation mechanisms would apply. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 83: 1219–1227, 2002     

污水处理技术在油田的应用

本文以文南油田为例，从实际出发，系统阐述了全密闭污水处理工艺。该工艺以理论为依据，根据污水的性质，通过收油、除铁、混凝沉降、过滤等几个环节，对油田产出水进行深度净化，实现了净化水的稳定达标，从而深化了油田水处理技术。该技术的应用保证了油田注入合格水，保护地面设施及地层能量，提高原油采收率，为油田稳产、高产提供了有利的保障。     

从霞石的结构特征探析其在陶瓷中的应用

霞石主要生成于富含Na2O而贫SiO2的碱性火成岩及伟晶岩中，晶体呈六方短柱状、厚板状、等粒状集合体或致密块状产出。Na2O、K2O合量为14％～20％，高于长石类。在陶瓷生产中用其取代部分长石，具有较强的熔剂效应，能显著的降低产品     

Side-Surface Structure of a Commercial β-Silicon Carbide Whisker

The side surfaces of a commercial β-SiC whisker were analyzed by calculating the surface energy and observing the microstructure of the whiskers. The results indicated that the side surfaces displayed a type of zigzag structure and were composed of {111}, {110}, and {100} crystal planes.