Xuejing WU
,
Jie JIN
,
Wei YAN
,
Hua XIAO
,
Liuyin FAN
,
Chengxi CAO
色谱
doi:10.3724/SP.J.1123.2016.04029
A model of derivatized moving reaction boundary (MRB) is formulated from original MRB formed with formic buffer (phase α) and sodium hydroxide (phase γ). The model shows the formation of a new phase (phase β) with high pH value originated from phase γ, derivatized MRB created with phases α and β, as well as stationary boundary formed between phases β and γ. To demonstrate the validity of this model, the theoretical and numerical procedures are advanced. At the same time, the experimental procedures are also developed relied on a capillary electrophoresis (CE) and a home-made apparatus. There are evident systemic errors and low agreements between the experimental results and theoretical calculation with the original model of MRB developed in our previous papers. However, there are much high agreements between the experiments and theoretical computation relied on the model of derivatized MRB developed herein. The model of derivatized MRB together with the relative theoretical and experimental procedures holds evident significance for the design of the new separation and compressive techniques of samples used widely in electrophoresis including CE.
关键词:
electromigration
,
electrophoresis
,
numerical computation
,
moving reaction boundary (MRB)
,
stacking
白宣羽
,
汪渊
,
徐可为
稀有金属材料与工程
采用磁控溅射方法在Si(111)基片上沉积Cu-Zr/ZrN薄膜体系作为扩散阻挡层.通过比较Cu-Zr/ZrN薄膜体系和三元非晶(Mo,Ta,W)-Si-N的电阻率,同时比较Cu-Zr/ZrN薄膜体系和Ta,YaN的硬度,说明作为扩散阻挡层的材料的选取,应从整体性能上考虑,而不能仅仅考虑热稳定性等单一指标.
关键词:
非晶
,
电阻率
,
纳米压入
,
硬度
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
WEI Jihe Xi'an Institute of Metallurgy and Construction Engineering
,
China.
材料科学技术（英文）
The oxidation of alloying elements during the ESR of stainless steel has been studied. The model previously developed by WEI and Mitchell for the chemical reactions and mass transfer processes during ESR was applied to the remelting of the high Cr steel 1Cr18Ni9(Ti).The laboratory data for the unsteady state A.C.ESR were analyzed and dealt with by the model.When the remelting process reached a steady state,an oxidant(Fe_2O_3 powder)or a deoxidant(Ca-Si powder or metallic Ca)was added to the slag bath.The results showed that this model is applicable to the remelting of stainless steel rather precisely, and it is expected that the model may offer a reliable basis for the control of composition during practical ESR of high alloy steel. Also,the oxidation of Cr in the steel must be noticed when its content is high;but it is entirely possible to adjust the Cr content of ingot within a considerable range,using a special technique by means of the slag-metal reactions during the remelting.
关键词:
ESR
,
null
,
null
,
null
,
null
