材料期刊网，材料期刊，材料类期刊，材料期刊投稿

Effect of Asynchronous Adjustments of Clamping Cylinders on Triangular Crack of Slab Castings Under Application of Soft Reduction

LIU Ke , CHANG Yun-he , HAN Zhan-guang , ZHANG Jia-quan

关键词:

La对Fe-P-N合金Snoek-Ke-K■ster峰的影响

研究了F? P—N合金加?对Snoek—Ke-Koster(SKK)峰的影响,发现与合金含La,P的原子浓度比(C_(La)/C_p)有关:对于C_(La)/C_p较大(例如4.56和2.6)的合金,La有明显增强SKK阻?效应:对于C_(La)/C_p=0.27的P过饱和合金,La对SKK峰无明显影响。

关键词: 内耗 , Snoek-Ke-Koster peak , Fe-P-La-N alloy

SNOEK-Ke-K■STER PEAK OF INTERNAL FRICTION IN Fe-P-N ALLOYS

Y.Y.Che , G. Y.Zeng , Y. C. Xu and J. W , Ji(College of Science , Northeastern University , Shenyang 110006 , China)

金属学报(英文版)

The internal friction and precipitate phases of the deformed Fe-P-N alloys have been investigated. It has been found that the ratio of depends on the content of P and the relation holds if the content of N is lower than 30wt.ppm and the content of P is lower than 640wt.ppm. It shows that the intercept K2 is related to the presence of the atomic pairs and clusters of P in the alloy matrix.

关键词: internal friction , null

复合材料层合壳体的三维本构方程

杨宜谦

玻璃钢/复合材料 doi:10.3969/j.issn.1003-0999.1999.04.002

本文推导出了复合材料层合壳体的三维本构方程,修正了Reddy和Liu论文中的错误.

关键词: 复合材料 , 壳体 , 三维本构方程

EFFECT OF RARE EARTH ON MEDIUM-TEMPERATURE INTERNAL FRICTION OF COMMERCIALLY PURE IRON

JI Jingwen LAI Zuhan WU Yuqin ZHANG Guofu Northeast University of Technology , Shenyang , ChinaLI Guangyi Institute of Metal Research , Academia Sinica , Shenyang , China

金属学报(英文版)

The strong effect of rare earth(RE)on medium-temperature internal friction(IF)of commercially pure iron is closely related to the heat treatment.The RE added into iron has an alloying effect.The Snoek-Ke-Kster(briefly SKK)peak lower as the aging temperature in- creases from 150℃ to 450℃,but it still exists even aged at 600℃.However,the SKK peak temperature T_p does not simply falls as the ascending of aging temperature,it rises again at 600℃ aging.

关键词: internal friction , null , null

硅脂导热涂层改善LED散热性能的研究

张淑芳 , 方亮 , 付光宗 , 董建新 , 陈勇

材料导报

研究了导热硅脂(KE3493)涂层对水下密闭环境下应用的LED灯散热情况的影响,结果表明,LED系统的集成电路板上加入导热涂层能提高LED系统的散热效率,研究结果为导热涂层应用于LED散热系统提供了参考数据.

关键词: 导热涂层 , 散热性能 , LED , 硅脂

BORON ISOTOPE FRACTIONATION DURING PROLONGED ION-BOMBARDMENT

Chinese Physics Letters

Dynamic Monte Carlo simulation is used to explore the B isotope sputtering during 1 ke V Kr ion irradiation. It is found that at both zero and high fluences the light isotope is preferentially ejected in the near-normal direction; meanwhile, there is a low fluence (1.4 x 10(15) ions/cm2), at which the isotope fractionation is independent of the emission angle in the nearly whole angular range.

关键词: simulation

聚醛/蒙脱土纳米复合材料非等温结晶动力学研究

徐卫兵 , 戈明亮 , 何平笙

应用化学 doi:10.3969/j.issn.1000-0518.2001.09.011

用熔融插层法制备聚甲醛/蒙脱土纳米复合材料,用X射线衍射研究聚甲醛及复合材料的微观结构,表明复合材料是纳米复合材料.用DSC法研究其非等温结晶行为,对所得数据分别用Jeziorny法、Ozawa法和Liu法进行处理.结果表明,Jeziorny法和Liu法处理非等温结晶过程比较理想.聚甲醛及聚甲醛/有机蒙脱土纳米复合材料的结晶活化能分别为334.6和196.9 kJ/mol,说明有机蒙脱土的加入,降低了聚甲醛的结晶活化能,且t1/z缩短,起到了异相成核的作用.

关键词: 聚甲醛 , 蒙脱土 , 纳米复合材料 , 非等温结晶动力学

聚丙烯/凹凸棒土纳米复合材料的非等温结晶动力学

王平华 , 徐国永

应用化学 doi:10.3969/j.issn.1000-0518.2004.08.007

用熔融复合法制备聚丙烯/凹凸棒土纳米复合材料,用DSC法研究其非等温结晶行为,对所得的数据分别用Jeziorny法、Ozawa法和Liu法进行处理.结果表明,Jeziorny法和Liu法处理非等温结晶过程比较理想.聚丙烯及聚丙烯/凹凸棒土纳米复合材料的结晶活化能分别为194.1和162.8 kJ/mol,表明凹凸棒土的加入,降低了聚丙烯的结晶活化能,且t1/2缩短,起到了异相成核作用.

关键词: 聚丙烯 , 凹凸棒土 , 纳米复合材料 , 非等温结晶动力学

体心立方金属中位错与间隙原子相互作用的回顾——机械波谱术研究

L．B．Magalas

金属学报

根据有关术语、实验结果和理论处理方法的现有数据，对冷加工峰，200，220或250℃峰，Snoek-Koster（SK）峰，以及Snoek-Ke-Koster（SKK）峰进行了评估。并特别强调了葛庭遂教授（Ke）为理解冷加工峰所作的贡献。同时，对由（1）Schoeck，（2）Seeger，（3）王业宁等人，（4）Magalas和Ngai，以及（5） Ogurtani 等人发展的现有理论模型进行了简要的综述.

关键词: Snoek-Koster峰 , null , null , null

材料期刊网