Suzhen LUO
,
Yugui ZHENG
,
Wei LIU
,
Heming JING
,
Zhiming YAO
,
Wei KE
材料科学技术（英文）
The cavitation erosion (CE) behavior of CrMnN ferrite-austenite duplex stainless steel in distilled water and 3% NaCl solution was investigated by using a magnetostrictive-induced CE facility. The damaged surfaces were observed by scanning electron microscope (SEM). It was found that the CE resistance of CrMnN steel was higher than that of 0Cr13Ni5Mo steel. The mass loss rate of CrMnN steel in distilled water was similar to that in 3% NaCl except at the early stage of CE. The failure mode of ferrite phase was brittle fracture, which had adverse effect on the resistance to CE, while the failure of austenite phase was a ductile failure in CrMnN steel. The excellent resistance to CE was related to the good mechanical properties of austenitic phase and the consumption of CE energy by plastic deformation involving slip and twinning.
关键词:
Cavitation erosion
,
null
,
null
戢景文
,
魏全金
,
张国福
,
赖祖涵
,
陈廷国
金属学报
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
X.B. Tian
,
X.F. Wang
,
A.G. Liu
,
L.P. Wang
,
S. Y. Wang
,
B. Y. Tang and P. K. Chu 1)Advanced Welding Production & Technology National Key Laboratory
,
Harbin Institute of Technology
,
Harbin 150001
,
China 2)Department of Physics & Materials Science
,
City University of Hong Kong
,
China
金属学报(英文版)
The research on plasma immersion ion implantation has been conducted for a little over ten years. Much is needed to investigate including processing technlogy, plasma sheath dynamics, interaction of plasma and surface, etc. Of the processing methods elavated temperature technique is usually used in PIII to produce a thick modified layer by means of the thermal diffusion. Meanwhile plasma ion heating is more recently developed by Ronghua Wei et al[1]. Therefore the temeperature is a critical parameter in plasma ion processing. In this paper we present the theoretical model and analysize the effect of imlantation voltage, plasma density, ion mass,etc on the temperature rise.
关键词:
plasma immersion ion implantation
,
null
,
null
夏小建
量子电子学报
doi:10.3969/j.issn.1007-5461.2009.06.010
采用Wei-Norman方法,求出含时变电压源的介观LC电路随时间演化的精确解,应用相空间准概率分布函数,研究了时变电源作用下介观LC电路相干态的量子特性,结果表明此函数是一个二维运动的Gauss波包,其中心电量和磁通呈余弦和正弦变化.
关键词:
量子光学
,
LC回路
,
介观电路
,
相干态
,
量子态演化
,
相空间的准概率分布函数
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
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
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
