材料期刊网

CCT-DIAGRAMS OF Si-Mn-Mo BAINITIC STEELS

LIU Xiao ZHANG Mingxing CHEN Daming ZHOU Lubin KANG Mokuang Northwestern Polytechnical University , Xi'an , China LIU Xiao Faculty No.401 , Northwestern Polytechnical University , Xi'an 710072 , China

金属学报(英文版)

CCT-diagrams of Si-Mn-Mo bainitic steels have been determined.With Mo 0.25%,the high-temperature transformation of the steel shifts large to the right,and the bainitic trans- formation region becomes a“flat topped C-curve”at cooling rate in wide range.Si in the steel may cause shift of the bainitic transformation region towards the right,and of the pro-eutectoid ferritic transformation region towards the left.Mn may delay the high temper- ature transformation more violently than the bainitic transformation.

关键词: meta-bainite , null , null

ZL401合金的阻尼行为研究

张忠明 , 王锦程 , 郭学锋 , 杨根仓

材料热处理学报 doi:10.3969/j.issn.1009-6264.2004.01.010

对铸态ZL401合金进行了低温人工时效处理,利用低频内耗测试技术研究了合金的阻尼性能及实模量与应变振幅、频率和温度的关系,并与铸态合金进行了对比.发现合金阻尼与应变振幅及应变频率相关,随温度的提高而增大,且在低温和高温时合金阻尼与频率的关系出现了相反的变化.ZL401合金振动过程中实模量的亏损随频率的降低和温度的升高而增大.认为ZL401合金的阻尼行为是界面阻尼和位错阻尼二者效应叠加的结果,室温阻尼主要归功于位错阻尼,而高温阻尼主要归功于界面阻尼.

关键词: ZL401合金 , 时效 , 阻尼行为 , 弹性模量

影响淬火剂SST401冷却速率的因素

韩振丽 , 范力茹

物理测试 doi:10.3969/j.issn.1001-0777.2004.02.006

对聚合物淬火剂SST401在不同浓度、温度及重复使用次数下的最大冷速和对流冷速进行了测定.结果表明,浓度、温度及重复使用次数对其冷速均有影响,介质的冷速随其浓度的增加而降低,随温度的升高而降低,当使用次数超过一定值时,随重复使用次数的增多而略有增大.

关键词: SST401 , 冷却速率 , 影响因素

Introduction to atmospheric corrosion research in China

Science and Technology of Advanced Materials

In this paper, we introduce the research on atmospheric corrosion in China. We describe the climate characteristics and the classification of atmospheric corrosivity across the whole country. We also describe the rusting evolution under simulated wet/dry cyclic conditions. (C) 2007 NIMS and Elsevier Ltd. All rights reserved.

关键词: atmospheric corrosion;corrosivity;rusting evolution;weathering steels;rust;mechanism;so2;o-3;no2

Recent Advances of Laser Coating Technology in China

LIANG Yong LI Ruiguo Institute of Metal Research , Academia Sinica , Shenyang 110015 , ChinaInstitute of Corrosion and Protection of Metals , Aademia Sinica , Shenyang , 110015 , China

材料科学技术（英文）

Recent advances in laser coating technology including laser cladding,laser surface alloying and laser vapour deposition in China are reviewed in this paper.

关键词: laser , null , null , null , null

钛酸酯偶联剂NDZ-401对纳米碳酸钙表面性能的影响

王旭 , 唐伟 , 王丽丽 , 孙坚 , 蔡晓良

稀有金属材料与工程

利用红外光谱仪(IR)、释放气体分析仪(EGC)、表面分析仪和气相色谱仪等表征和研究了钛酸酯偶联剂NDZ-401对纳米碳酸钙表面物理化学性能的影响.结果表明,钛酸酯偶联剂NDZ-401中的-Ti-(O=PH-(OC8H17)2)2基团以化学键结合在纳米碳酸钙粒子表面.经1.5%(质量分数)左右NDZ-401处理的纳米碳酸钙具有良好的可分散性和较强的表面吸附能力.

关键词: 纳米 , 碳酸钙 , 表面 , 偶联剂

脉冲DT中子场中的CeF3、ST401 闪烁探测器输出比对

胡孟春 , 李忠宝 , 唐章奎 , 周殿忠 , 杨洪琼 , 王振通 , 张建华 , 胡青元 , 杨高照

人工晶体学报 doi:10.3969/j.issn.1000-985X.2005.02.039

本工作对国内近年新研制的CeF3用于γ测量时的抗中子干扰能力进行研究,在脉冲DT中子源场中对分别由CeF3和ST401构成的闪烁探测器输出进行比较测量.在相同测点中子注量率情况下的测量结果表明:ST401探测器的输出电荷比同体积的CeF3高10多倍;ST401探测器的电流输出峰值幅度比同体积的CeF3高30多倍.由此可得到CeF3对中子相对不灵敏,在n、γ混合辐射场中测量快γ辐射时,该无机晶体将是一种较合适的候选闪烁体.

关键词: CeF3 , 无机闪烁体 , 辐射探测 , 脉冲DT中子源 , 中子灵敏度 , ST401

ADMC401与液晶模块MGSL-12032A的接口电路及其应用

鄂飞 , 程汉湘 , 吴春芳 , 朱约章

液晶与显示 doi:10.3969/j.issn.1007-2780.2005.03.017

介绍了高速数字信号处理芯片ADMC401以及液晶显示模块MGLS-12032A的基本性能和参数,分析了二者的时序特性和速度匹配问题.采用由D触发器74HC574和逻辑器件GAL16V8组成的接口电路,解决了高速数字信号处理芯片与低速液晶显示模块之间的速度匹配问题.提供了用ADSP-21xx汇编语言编写的字母显示的程序代码及框图.最后探讨了该接口电路在电力系统无功补偿装置中的应用.试验表明该接口电路可行、实用.

关键词: 数字信号处理 , 液晶显示模块 , 接口电路 , 速度匹配 , 无功补偿装置

Development of Cast Superalloys for Gas Turbines in China

CHEN Rongzhang CHEN Wanhua Institute of Aeronautic Materials , Beijing 100095 , China.

材料科学技术（英文）

As in other countries,significant achievements in the research of cast superalloys for many years have also been obtained in China.These results are important contribu- tion to the development of aero and land-based gas tur- bine engines.

关键词: cast superalloy , null

R&D STATUS ON INTERMETALLICS IN CHINA

CHEN Guoliang(State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing 100083 , China)SHI Changxu (Academia Sinica , Beijing 100864 , China)

金属学报(英文版)

This paper briefiy introduces the R&D of intermetallics in China. R&D on intermetallics in a national scale in China began near ten years ago. The investigation in past years focused on the fundamental research and materials development. A significant progress has been made. Various components that made of Ti3Al Ni3Al, TiAl and Fe3Al have been successfully manufactured Some of them have been evaluted. It is expected that some intermetallic alloys will be produced in an industrial scale in the near future.

关键词: :intermetallic alloys , null , null , null