改进动力煤的取制样方法

供热电厂的动力煤货源杂、品位波动大，针对该情况我们对动力煤的取制样方法进行改进，改进后不仅动力煤的质量有所提高，同时大大缩短了动力煤的制样时间，减少水分的散失，为莱钢避免了一定经济损失。     

浅谈提高微、低铬制样质量，减少其对分析质量的影响

铬铁属于贵重金属，是冶炼不锈钢时使用较多的一种原材料，其含量的准确性对不锈钢产品的质量有重要影响，为了降低微、低铬制样质量对分析结果的影响，提高制样水平，我们针对微、低铬制样质量存在的问题进行了攻关和改进。     

炼焦煤取制样方法的改进

介绍了济钢炼焦煤取制样方法的创新与完善,如研制安装了自动取样机、对受料槽进行密封改造、改进炼焦煤水分制样、G值制样改为机械研磨等,堵塞了检验漏洞,提高了检验质量。     

可见金矿石化验样品加工制备方法及其设备的比较

针对可见金具有良好的延展性、样品分布不均匀、加工制备困难的状况，根据现有的主要制样方法和设备，进行了磨样时间、样品粒度和均匀性对比实验，以期找到最适合于可见金矿石的制样方法和设备。     

X-射线荧光光谱法分析铁合金成份的最新进展

本文详细介绍了铁合金粉末压片制样和硼酸盐熔片制样在X-射线荧光光谱法中的应用,粉末压片制样包括直接压片法和稀释压片法两种方法,而硼酸盐熔片制样包括酸溶解制样、石墨粉垫底制样和制备保护层预氧化制样三种方法。对于生产来说,选取不同的制样方法,对于提高分析速度和降低成本起着重要作用。     

X射线荧光光谱在钒钛磁铁矿分析中应用文献评介

当今X射线荧光光谱(XRF)已成为钒钛磁铁矿分析最重要的方法之一。作者收集了1993—2022年我国X射线荧光光谱技术分析钒钛磁铁矿(包括钛矿石、钒矿石、钛铁矿等)的期刊文献共计32篇，其中23篇采用熔融制样方法，9篇采用粉末压片制样方法。文章介绍了我国钒钛磁铁矿分析概况，对31篇期刊文献用列表方式简介了方法要点，对其中较典型、有代表性的文献按制样方法进行了重点评介，最后讨论了X射线荧光光谱分析地质材料时的制样方法选取、样品粒度影响和钒钛磁铁矿石的X射线荧光光谱分析方法的未来发展等问题。全篇引文44篇。     

转炉终点成分分析传递模式研究

为提高转炉终点成分分析速度,在保证转炉冶炼正常的生产条件下,宣钢实验室优化分析流程、改进取样设备、规范制样操作、增加同步显示器,提高了转炉终点分析效率,改善了样品取样制样的质量,降低了残样的出现频率,取样成功率比改进前提高约17%,信息传输正确率达到100%。改进后,从取样到分析结果传输最多节约了3 min,提高了样品分析准确率,降低了生产成本。     

湘钢铁矿石入厂取、制样工作的改进

针对湘钢外购入厂铁矿石取、制样工作中存在的问题，进行了全面分析。介绍了湘钢通过持续改进所取得的效果。     

贵冶ISA法阴极铜取制样方法改进与探讨

本文探讨了贵溪冶炼厂ISA法阴极铜杂质元素的分布,并据此改进了取制样方法,保证了分析结果的准确可靠。     

离心浇铸制样X射线荧光光谱法测定镍铁中硅、磷、镍、钴

本文采用离心浇铸制样，x射线荧光光谱法测定镍铁中Si、P、Ni和Co的含量，研究了镍铁的制样条件和分析条件，测定其精密度和准确度。该方法测定值与化学值一致性较好，具有准确、快速、精密度高等优点。     

Prediction of outcome and early vs. late improvement in OCD patients treated with cognitive behaviour therapy and pharmacotherapy

Several factors must be taken into account when deciding which specimen preparation technique(s) to use. These factors include the amount of material available, ease of preparing this material due to its properties and familiarity, location and size of the region of interest, amount of information sought, facilities accessible, and time available by the researcher to devote to the preparation of the specimen. The more popular specimen preparations for thin films, namely, electropolishing, cleaving, crushing, mechanical thinning followed by ion milling, and ultramicrotomy are discussed and the more unusual techniques such as extraction/replication, photochemical etching, lithography and reactive ion etching (RIE), chemically assisted ion beam etching (CAIBE), and precision polishing-based techniques are described. Their advantages and disadvantages in the context of the above factors are discussed. Suggestions for increasing one's success rate in preparing specimens are given. The role of transmission electron microscopy (TEM) analysis is considered since it rarely stands in isolation from other physical analytical techniques, nor is it often used as a quick diagnostic tool. Conservation of material by the minimization of the amount of material used (or destroyed) by TEM specimen preparation, and conservation of one's time by performing TEM analysis only on "worthy" samples should be given maximum consideration.     

X射线荧光光谱法测定煤灰成分

介绍利用X射线荧光光谱法测定煤灰成分的方法，讨论仪器的测量条件、试样制备条件的选择和合成标样的制备方法，并进行精密度与准确度试验，结果表明方法准确可靠。     

X射线荧光光谱法测定煤灰成分

介绍利用X射线荧光光谱法测定煤灰成分的方法，讨论仪器的测量条件、试样制备条件的选择和合成标样的制备方法，并进行精密度与准确度试验，结果表明方法准确可靠。     

钛合金材料OIM试样的电解抛光及制备工艺

由于钛合金材料强度硬度较高，机械抛光通常不能去除试样表面的残余应变层，因而采用电解抛光是制备电子背散射衍射试样的理想方法。本研究通过正交试验进行优选，并对优选的电解抛光工艺参数进行调整，制定出了钛合金电子背散射衍射试样的快速制备工艺。     

煤的可磨性指数检测方法研究

对煤的可磨性指数检测方法进行了研究.从煤的可磨性试样的制备,可磨性指数测定过程,以及正确绘制和使用校准图等方面,阐述了产生试验误差的因素,并提出了减少试验误差的方法.     

GB／T4000焦炭试样制备方法的改进

对焦炭进行反应性及反应后强度试验时，采用3种不同的方式制备焦炭试样，发现采用颚式破碎机破碎与手工修整相结合方式制样，更符合制样的实际情况，比GB／T4000-1996制样方式更能满足高温反应对试样要求，能稳定的反映焦炭的CRI及CSR，试验重复性好；同时缩小试样粒度控制范围也有利于提高试验结果精密度。     

船板冲击试验结果的影响因素及试样断口分析

描述试样加工和冲击尺寸等影响金属夏比冲击结果的因素,并对试样断口区域进行讨论。     

热喷涂涂层的制备

对热喷涂层金相试样制备进行了介绍 ,并对一些技术问题给予提示。     

The extent and nature of the strength-differential effect in steels

Tensile and compressive stress-strain curves were obtained for several types of microstructures in a variety of steels. The strength-differential effect, previously found in martensitic structures, was present in lower, intermediate, and upper bainite and in Widmanstätten ferritepearlite as well as in ultrafine-grained martensite. An equiaxed ferrite-pear lite structure showed no strength differential. The strength differential in martensite increased as test temperature was decreased below room temperature. In several series of tests, the same specimen design was used in tension and in compression to eliminate possible strength variations due to variations in specimen preparation. Several theories which have been proposed for the strength-differential effect are discussed with respect to the present results, and it is shown that most of the previous suggestions are invalid.     

THE APPLICATION OF FRACTURE MECHANICS TO CEMENTED TUNGSTEN CARBIDES

Abstract

The difficulties encountered in the measurement of the toughness of cemented tungsten carbides are discussed and the benefits that might be expected from an application of fracture mechanics to the problem are described. A simple method for the measurement of the fracture-toughness parameter, K_IC, for the more brittle grades of carbide is considered. The method involves indenting a beam-shaped specimen with a Knoop diamond to produce a crack, and loading the pre-cracked specimen to failure in four-point bending. Results from two grades of cemented carbide are presented and show that a standard error of the mean K_IC of ～3% can be obtained from a set of 10 measurements, with a minimum of specimen preparation and no special testing equipment. The results show also that the toughness of the cemented carbide can be affected by grain-size variations within the same batch of material and by the pressing direction during manufacture.