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| 1 | Cu-Ni-Mg-Al-CO_3四元水滑石的合成及结构分析显示文摘以Cu(NO3)2 ·3H2 O,Ni(NO3)2 ·6H2 O,Mg(NO3)2 ·6H2 O和Al(NO3)3·9H2 O为原料,以NaOH和Na2 CO3为沉淀剂,采用成核/晶化隔离法合成了Cu Ni Mg Al CO3四元水滑石,通过XRD,FT IR,TG DTA,ICP等手段对样品进行测试和表征,并且对水滑石结构的层板和层间阴离子相互作用进行分析和讨论.结果表明,控制Cu2 +离子与其它二价金属离子的配比,可制备晶体结构规整的M(II)4 M(III)2 (OH)12 CO3·4H2 O型水滑石;Cu2 +离子的引入导致了明显的Jahn Teller效应;且随Mg2 +量的增加,使得这种效应更加显著,另一方面Mg2 +量的增加有利于Cu Ni Mg Al CO3四元水滑石晶体在a方向上生长。 | 冯拥军 李殿卿 李春喜 王子镐 EVANS D.G 段雪 | 2003 | 化学学报2003,61,1: | 34 |
| 2 | 介孔镁铝复合氧化物的成孔机理及其结构特征显示文摘采用自行创制的成核/晶化隔离法,通过调变晶化时间制备了不同粒径的层状前体——镁铝水滑石,并将其于500℃焙烧,制得了孔径分布窄、具有介孔结构特征的镁铝复合氧化物,且该双金属复合氧化物的晶相结构是兼有MgO晶相和层状结构的复相结构. | 赵 芸 矫庆泽 D.G Evans 段 雪 | 2002 | 中国科学(B辑)2002,32,1: | 27 |
| 3 | 层状化合物α-磷酸锆的制备和表征显示文摘用直接沉淀法,采用玻璃反应瓶,在常温常压条件下制备α-磷酸锆(α-ZrP),并采用XRD、IR、SEM、TPDE和DG-DTA等方法对其进行了表征。结果表明α-磷酸锆的结晶度较高,层间距7.66A。晶体结构中有-HPO4基团存在,含有一种结晶水,-HPO4基团中的羟基与结晶水以氢键相连。其晶体平均粒径约2μm,呈薄片状。α-ZrP晶体的结晶水在90~200℃之间被脱除,层板羟基在200℃开始缓慢脱除,到600℃彻底脱完。 | 杜以波 李峰 何静 段雪 王作新 Evans,D.G | 1998 | 无机化学学报1998,14,1: | 25 |
| 4 | 非平衡晶化控制水滑石晶粒尺寸显示文摘本文采用非平衡晶化法通过在晶化后期补加原料合成了一系列不同晶粒尺寸的水滑石LDH样品研究表明非平衡晶化法可在一定范围内调控LDH的粒径所合成的LDH样品组成稳定晶体结构完整。 | 赵芸 矫庆泽 李峰 Evans D.G 段雪 | 2001 | 无机化学学报2001,17,6: | 26 |
| 5 | 硼酸根插层水滑石层间组成及取向结构的控制显示文摘以Mg0 .67Al0 .3 3 (OH) 2 (CO3 ) 0 .165·0 .62H2 OLDHs为前体 ,以水为分散介质 ,由离子交换法组装了硼酸根插层LDHs ,并用XRD ,FT IR ,TG DTA ,ICP ,11BMASNMR等手段对样品进行了分析和表征 .结果表明 ,通过控制离子交换时的pH ,可使硼酸根取代Mg Al CO3 LDHs前体层间的CO2 -3 ,且可控制离子交换程度及客体的取向 ,从而控制插层结构 .对硼酸根插层LDHs的结构进行研究发现 ,控制pH =4.5 ,层间阴离子主要是一硼酸根和离子平面与LDHs层板平行的三硼酸根 ,出于结构稳定的需要 ,CO2 -3 不能完全被置换 ;控制pH =3 .5 。 | 李素锋 李殿卿 史翎 杨兰 蒲敏 Evans D.G 段雪 | 2004 | 化学学报2004,62,13: | 13 |
| 6 | 内蒙古大井锡多金属矿床流体成矿作用研究:单个流体包裹体组分LA-ICP-MS分析证据显示文摘应用LA-ICP-MS分析方法进行大井矿床中心部位的锡铜矿体及黄岗梁矿床锡矿体萤石及石英中单个包裹体流体组分分析,以包裹体流体中微量元素Rb/Sr,Sn/Cu等比值追踪大井矿床富铜及富锡流体的来源与演化.研究结果表明大井矿床富铜流体Cu>Sn,Sr>Rb几至几十倍,相对富集Na,主要产出于萤石中,流体可能来源于深源较基性岩浆.富锡流体Sn>Cu,Rb>Sr几至几十倍,相对富集K,产出于石英及萤石中,流体可能来源于浅源的花岗岩浆.富锡与富铜两种流体在中低温-低盐度阶段强烈叠加富集成矿,形成大井矿床中心部位锡铜富矿体,解决了前人研究中难于解决的富锡、富铜流体成矿机理问题. | 王莉娟 王玉往 王京彬 朱和平 D.Günther | 2006 | 科学通报2006,51,10: | 12 |
| 7 | The Friction and Wear Properties of CrN, Graphit-iC and Dymon-iC Coatings in Air and under Oil-lubrication.显示文摘Hard ceramic coatings such as TiN and CrN are very successful and are widely used in improving the performance of cutting and forming tools, but they are less successful in providing protection for general machine components, such as gears and engine parts. The development of low-friction wear resistant coatings that can run dry or in a minimum amount of oil is becoming increasingly important to this industry. Two recently developed carbon-based coatings Graphit-iC? and Dymon-iC, which are shown to exhibit very high sliding wear resistance and low friction in dry conditions, are compared to a CrN coating under oil lubricated conditions. Long term pin-on-disc tests using a chrome steel counterface ball were carried out on coated HSS test samples. All the coatings performed well at very high applied contact pressures, exceeding 1.5 GPa, but the Graphit-iC? and Dymon-iC coatings also exhibited the desirable characteristic of protecting the counterface material. Reasons for this behaviour are discussed. | J. Stallard D.G Teer | 2004 | 材料热处理学报2004,25,05B: | 11 |
| 8 | 大别-苏鲁榴辉岩和石榴辉石岩中矿物Ce异常:对氧化环境下形成沉积物深俯冲作用的示踪显示文摘准分子激光ICP-MS矿物原位微区分析发现,来自大别-苏鲁超高压变质带典型地区(双河、毛屋、碧溪岭及仰口)的榴辉岩和石榴辉石岩中石榴石Ce异常从正到负高度变化.绿辉石或单斜辉石也表现出类似的Ce异常特征,但变化幅度小于石榴石.这种Ce异常高度变化的现象仅见于氧化条件下形成的强烈风化剖面中.因此,这一结果表明大别-苏鲁榴辉岩和石榴辉石岩中存在氧化条件下形成的风化沉积物,这些陆壳物质的深俯冲对地幔的改造和物质再循环可能具有重要意义. | 罗彦 高山 袁洪林 柳小明 D.Gnther 金振民 孙敏 | 2004 | 中国科学(D辑)2004,34,1: | 10 |
| 9 | 层状前体镍铁水滑石及磁性材料的制备及表征显示文摘提出了利用镍铁水滑石作为磁性前体再经高温焙烧制备尖晶石型铁氧体的思路 ,深入研究了水滑石的制备工艺及结构性能并初步探讨了其焙烧后的磁学性能 .由共沉淀法合成了Ni Fe摩尔比为 2 ,3,4,6的镍铁水滑石 ,XRD结果表明镍铁比为 3时晶形较为理想 ,且随着晶化温度的升高及晶化时间的延长 ,水滑石的晶体结构规整性增强 .热重 -差热结果显示镍铁水滑石的分解有两个过程 ,当镍铁比为 3时 ,水滑石的热稳定性相对最高 . | 周彤 李峰 战可涛 Evans D.G 段雪 张密林 | 2002 | 化学学报2002,60,6: | 9 |
| 10 | A review of the source, behaviour and distribution of arsenic in natural waters显示文摘 | P.L Smedley D.G Kinniburgh | 2002 | Applied Geochemistry2002,,5: | 5 |
| 11 | 由Mg-Fe(Ⅱ)-Fe(Ⅲ) LDH层状前体制备MgFe_2O_4尖晶石的研究显示文摘提出了一种由层状前体合成单一晶相镁铁尖晶石的新方法,首先对Mg Fe(Ⅱ) Fe(Ⅲ)水滑石的制备进行了系统研究,成功合成了Mg2 +/Fe2 +/Fe3+摩尔比分别为 1/2/1,4/5/3,2/1/1的系列水滑石层状前体,结果表明在以上三种投料比下均可制备出晶型较好的水滑石层状前体,并探讨了合成条件对晶体结构的影响规律.在此基础上,利用X射线衍射、振动样品磁强计和穆斯堡尔谱等手段研究了层状前体焙烧产物的结构、组成、磁性及微观信息,研究表明当Mg2 +/Fe2 +/Fe3+投料摩尔比为 2/1/1时。 | 刘俊杰 李峰 EVANS D.G 段雪 | 2003 | 化学学报2003,61,1: | 4 |
| 12 | A comparison of the abrasive wear behaviour of HVOF sprayed titanium carbide- and titanium boride-based cermet coatings显示文摘 | M Jones A.J Horlock P.H Shipway D.G McCartney J.V Wood | 2001 | Wear2001,,1: | 3 |
| 13 | Paleozoic oil–source rock correlations in the Tarim basin, NW China显示文摘 | S.C Zhang A.D Hanson J.M Moldowan S.A Graham D.G Liang E Chang F Fago | 2000 | Organic Geochemistry2000,,: | 3 |
| 14 | Micro-scale Abrasion and Medium Load Multiple Scratch Tests of PVD Coatings显示文摘Micro-scale abrasion testing is widely used to determine the abrasion resistance of thin film coatings; it is a simple technique that can easily be used as part of a quality control procedure, but it has got the disadvantage of not allowing an easy study of the wear mechanisms involved: it is difficult to estimate the load applied on each abrasive particles in the contact between the loaded ball and the specimen. The possibility of using progressive loading scratch testing, a method widely used to assess the adhesion of thin film coatings, to model the abrasive wear of coatings has been studied in the past; the use of multiple scratch tests to study the wear mechanisms corresponding to a single abrasion scratch event has also been studied in the case of bulk materials (ceramics and hard metals). Two coatings, deposited by Closed Field Unbalanced Magnetron Sputter Ion Plating (CFUBMSIP) on ASP23 powder metallurgy steel substrate are chosen to be representative of the use of protective coatings in industry: titanium nitride, which is widely used to prevent tool wear, and TCL Graphit-iC?, which is widely used as a wear resistant solid lubricant coating. The two coatings are first characterised by using a standard quality control procedure: their thickness is determined by the cap grinding method, their adhesion by progressive loading scratch. Then micro-scale abrasion tests performed with a slurry at a concentration which promotes grooving wear, and medium load multiple scratch tests performed with diamond indenters are completed; the results of these tests are analysed and compared to determine if there is any correlation between the two sets of results; the multiple scratch tests wear tracks are also observed to determine the wear mechanisms involved. | S. Poulat D.G Teer | 2004 | 材料热处理学报2004,25,05B: | 3 |
| 15 | The influence of goat genotype on the production of Capretto and Chevon carcasses. 1. Growth and carcass characteristics显示文摘 | J.S Dhanda D.G Taylor J.E McCosker P.J Murray | 1999 | Meat Science1999,,4: | 3 |
| 16 | A review of the source, behaviour and distribution of arsenic in natural waters显示文摘 | P.L Smedley D.G Kinniburgh | 2002 | Applied Geochemistry2002,,5: | 3 |
| 17 | Surface properties of sludge and their role in bioflocculation and settleability显示文摘 | B.Q Liao D.G Allen I.G Droppo G.G Leppard S.N Liss | 2000 | Water Research2000,,2: | 3 |
| 18 | 查看详情显示文摘 | Patil C.B Kapadi U.R Hundiwale D.G Mahulikar P.P | | 0,,: | 1 |
| 19 | Degree of covalency of LiCoOz:X-ray emission and photoelectron study显示文摘 | Galakdhov V.R Kurmaev E Kellerman D.G | | 0,,04: | 1 |
| 20 | Victims of peer aggression显示文摘 | Perry D.G Kusel S.J Perry L.C | | 0,,06: | 1 |