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《化学科学与工程前沿(英文)》 2023年 第17卷 第10期 页码 1503-1515 doi: 10.1007/s11705-022-2294-4
关键词: insoluble drugs polymer inhibition crystallization crystal growth kinetics DFT calculations
Computer modeling of crystal growth of silicon for solar cells
Lijun LIU, Xin LIU, Zaoyang LI, Koichi KAKIMOTO
《能源前沿(英文)》 2011年 第5卷 第3期 页码 305-312 doi: 10.1007/s11708-011-0155-9
Song ZHANG, Lelun WANG, Anze YI, Honggang GU, Xiuguo CHEN, Hao JIANG, Shiyuan LIU
《机械工程前沿(英文)》 2020年 第15卷 第2期 页码 256-264 doi: 10.1007/s11465-019-0573-7
关键词: ferroelectric liquid crystal polarization rotator (FLCPR) dual liquid crystal Mueller matrix polarizer design and optimization
Research progress on ultra-precision machining technologies for soft-brittle crystal materials
Hang GAO,Xu WANG,Dongming GUO,Yuchuan CHEN
《机械工程前沿(英文)》 2017年 第12卷 第1期 页码 77-88 doi: 10.1007/s11465-017-0411-8
Soft-brittle crystal materials are widely used in many fields, especially optics and microelectronics. However, these materials are difficult to machine through traditional machining methods because of their brittle, soft, and anisotropic nature. In this article, the characteristics and machining difficulties of soft-brittle and crystals are presented. Moreover, the latest research progress of novel machining technologies and their applications for soft-brittle crystals are introduced by using some representative materials (e.g., potassium dihydrogen phosphate (KDP), cadmium zinc telluride (CZT)) as examples. This article reviews the research progress of soft-brittle crystals processing.
关键词: brittle soft functional crystal ultra-precision machining
Motoi YAMASHITA
《化学科学与工程前沿(英文)》 2009年 第3卷 第1期 页码 26-32 doi: 10.1007/s11705-009-0002-2
关键词: isotactic polybutene-1 tetragonal phase crystal thickness melt growth chain folding small angle X-ray scattering nucleation theory end surface free energy
Qianqian Guo, Irmgard Kalf, Ulli Englert
《化学科学与工程前沿(英文)》 2018年 第12卷 第3期 页码 433-439 doi: 10.1007/s11705-018-1743-6
Diffusion reaction of the labile building block Mg(acacCN)2 (acacCN= 3-cyanoacetylacetonate) with silver salts leads to a series of solvated Mg/Ag bimetallic coordination polymers with composition [Mg(acacCN)3Ag]·solvent. Despite their common stoichiometry, the topology of these polymers depends on the solvent of crystallization. The two-dimensional coordination compound [Mg(acacCN)3Ag]·4CHCl3 in space group P
关键词: ditopic ligand substituted acetylacetone desolvation diffraction
Shuman Xu, Xiaoxiao Zhang, Dangguo Cheng, Fengqiu Chen, Xiaohong Ren
《化学科学与工程前沿(英文)》 2018年 第12卷 第4期 页码 780-789 doi: 10.1007/s11705-018-1733-8
关键词: hierarchical ZSM-5 crystal size catalytic cracking Thiele modulus effectiveness factor
董元篪,武杏荣,余 亮,李辽沙
《中国工程科学》 2007年 第9卷 第1期 页码 63-68
采用熔融-冷却方法并在渣中分别添加SiO2和Al2O3进行改性,讨论了含钒钢渣中钒的富集以及钒 富集相的结晶与生长。研究表明,在添加SiO2的含钒钢渣中,钒由分布在2CaO·SiO2(C2S)和2CaO·Fe2O3(C2F)。两个相中转变为集中分布在Ca3[(V,P,Si)]O4]2固溶体相中,其中 V2O的质量分数达到24.38%,但是生 成的钒富集相晶体尺寸较小;在添加Al2O3的钢渣中,钒同样也富集在 Ca3[(V,P,Si)]O4]2 固溶体相中,其中 V2O5 的质量分数达到14.90%。晶化试验表明 , 钒富集相核化存在非均匀核化与均匀核化 , 温度分别在1350℃ 和1325 ℃ ; 在1300 ℃ 保温条件下,钒富集相的晶体由 5 min 的 6.24 μm 生长到 580 min 的 25.19 μm,单位面积上的晶体数随之下降 。
Novel casting processes for single-crystal turbine blades of superalloys
Dexin MA
《机械工程前沿(英文)》 2018年 第13卷 第1期 页码 3-16 doi: 10.1007/s11465-018-0475-0
This paper presents a brief review of the current casting techniques for single-crystal (SC) blades, as well as an analysis of the solidification process in complex turbine blades. A series of novel casting methods based on the Bridgman process were presented to illustrate the development in the production of SC blades from superalloys. The grain continuator and the heat conductor techniques were developed to remove geometry-related grain defects. In these techniques, the heat barrier that hinders lateral SC growth from the blade airfoil into the extremities of the platform is minimized. The parallel heating and cooling system was developed to achieve symmetric thermal conditions for SC solidification in blade clusters, thus considerably decreasing the negative shadow effect and its related defects in the current Bridgman process. The dipping and heaving technique, in which thin-shell molds are utilized, was developed to enable the establishment of a high temperature gradient for SC growth and the freckle-free solidification of superalloy castings. Moreover, by applying the targeted cooling and heating technique, a novel concept for the three-dimensional and precise control of SC growth, a proper thermal arrangement may be dynamically established for the microscopic control of SC growth in the critical areas of large industrial gas turbine blades.
关键词: superalloy investment casting Bridgman process directional solidification single crystal turbine blade
Polymorphism and crystal transformation of penicillin sulfoxide
Dingding JING, Yongli WANG, Zhijian CHEN, Lina ZHOU, Jingkang WANG
《化学科学与工程前沿(英文)》 2011年 第5卷 第4期 页码 442-447 doi: 10.1007/s11705-011-1140-x
关键词: penicillin sulfoxide crystallization polymorphism crystal transformation Raman spectroscopy
Biosorption and biotransformation of crystal violet by
Tao PAN, Suizhou REN, Jun GUO, Meiying XU, Guoping SUN
《环境科学与工程前沿(英文)》 2013年 第7卷 第2期 页码 185-190 doi: 10.1007/s11783-012-0435-6
关键词:
crystal violet
decolorization
biosorption
biotransformation
Evaluation method of multiaxial low cycle fatigue life for cubic single crystal material
CHEN Jiping, DING Zhiping
《机械工程前沿(英文)》 2007年 第2卷 第3期 页码 278-282 doi: 10.1007/s11465-007-0048-0
关键词: orthotropic regression analysis crystal material multiaxial prediction
Zhihua ZHANG,Huichen YU,Chengli DONG
《机械工程前沿(英文)》 2015年 第10卷 第4期 页码 418-423 doi: 10.1007/s11465-015-0362-x
Low cycle fatigue tests were conducted on the single crystal nickel-based superalloy, DD6, with different crystallographic orientations (i.e., [001], [011], and [111]) and strain dwell types (i.e., tensile, compressive, and balanced types) at a certain high temperature. Given the material anisotropy and mean stress, both orientation factor and stress range were introduced to the Smith, Watson, and Topper (SWT) stress model to predict the fatigue life. Experimental results indicated that the fatigue properties of DD6 depend on both crystallographic orientation and loading types. The fatigue life of the tensile, compressive, and balanced strain dwell tests are shorter than those of continuous cycling tests without strain dwell because of the important creep effect. The predicted results of the proposed modified SWT stress method agree well with the experimental data.
关键词: life prediction single crystal superalloy low cycle fatigue (LCF) crystallographic orientation strain dwell
Economic Growth Model Based on Six Basic Factors of Production—Xu Growth Rate Equation
Shou-bo Xu,Zong-yuan Huang
《工程管理前沿(英文)》 2014年 第1卷 第2期 页码 160-175 doi: 10.15302/J-FEM-2014024
关键词: six basic factors of production economic growth model Xu Growth Rate Equation
Mingtao RUN, Hongzan SONG, Yanping HAO
《化学科学与工程前沿(英文)》 2009年 第3卷 第3期 页码 255-264 doi: 10.1007/s11705-009-0008-9
关键词: poly(trimethylene terephthalate) short carbon fiber banded spherulites crack
标题 作者 时间 类型 操作
Theoretical insights into influence of additives on sulfamethoxazole crystal growth kinetics and mechanisms
期刊论文
Computer modeling of crystal growth of silicon for solar cells
Lijun LIU, Xin LIU, Zaoyang LI, Koichi KAKIMOTO
期刊论文
Dynamic modulation performance of ferroelectric liquid crystal polarization rotators and Mueller matrix
Song ZHANG, Lelun WANG, Anze YI, Honggang GU, Xiuguo CHEN, Hao JIANG, Shiyuan LIU
期刊论文
Research progress on ultra-precision machining technologies for soft-brittle crystal materials
Hang GAO,Xu WANG,Dongming GUO,Yuchuan CHEN
期刊论文
Lamellar thickness transition of melt-crystallized polybuten-1 tetragonal phase: configurational change in chain folding directions
Motoi YAMASHITA
期刊论文
Crystal-to-crystal transformation from the triclinic to the cubic crystal system by partial desolvation
Qianqian Guo, Irmgard Kalf, Ulli Englert
期刊论文
Effect of hierarchical ZSM-5 zeolite crystal size on diffusion and catalytic performance of n-heptane
Shuman Xu, Xiaoxiao Zhang, Dangguo Cheng, Fengqiu Chen, Xiaohong Ren
期刊论文
Polymorphism and crystal transformation of penicillin sulfoxide
Dingding JING, Yongli WANG, Zhijian CHEN, Lina ZHOU, Jingkang WANG
期刊论文
Biosorption and biotransformation of crystal violet by
Tao PAN, Suizhou REN, Jun GUO, Meiying XU, Guoping SUN
期刊论文
Evaluation method of multiaxial low cycle fatigue life for cubic single crystal material
CHEN Jiping, DING Zhiping
期刊论文
LCF behavior and life prediction method of a single crystal nickel-based superalloy at high temperature
Zhihua ZHANG,Huichen YU,Chengli DONG
期刊论文
Economic Growth Model Based on Six Basic Factors of Production—Xu Growth Rate Equation
Shou-bo Xu,Zong-yuan Huang
期刊论文