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International Journal of Minerals,Metallurgy and Materials 2024年第5期31卷 1147-1165页

作者： Zijian Peng Yuhao Wang Shuqi Wang Junteng Yao Qingyuan Zhao Enyu Xie Guoliang Chen Zhigang Wang zhanguo liu Yaming Wang Jiahu Ouyang School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China School of Materials and Metallurgical Engineering Inner Mongolia University of Science&TechnologyBaotou 014010China

The A_(2)B_(2)O_(7)-type rare earth zirconate compounds have been considered as promising candidates for thermal barrier coating(TBC) materials because of their low sintering rate,improved phase stability,and reduced thermal conductivity in contrast with the currently used yttria-partially stabilized zirconia (YSZ) in high operating temperature *** review summarizes the recent progress on rare earth zirconates for TBCs that insulate high-temperature gas from hot-section components in gas *** on the first principles,molecular dynamics,and new data-driven calculation approaches,doping and high-entropy strategies have now been adopted in advanced TBC materials *** this paper,the solid-state heat transfer mechanism of TBCs is explained from two aspects,including heat conduction over the full operating temperature range and thermal radiation at medium and high *** paper also provides new insights into design considerations of adaptive TBC materials,and the challenges and potential breakthroughs are further highlighted for extreme environmental *** for improving thermophysical performance are proposed in two approaches:defect engineering and material compositing.

关键词： rare earth zirconates thermal barrier coatings defect engineering doping and compositing thermal conductivity thermal expansion

山前冲断带砂砾岩储层发育机制及控制因素:以柴达木盆地昆北油田切12区为例

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地球科学 2024年第1期49卷 55-70页

作者：宫清顺刘占国王波朱超宋光永伍劲中国石油天然气股份有限公司杭州地质研究院浙江杭州310023 中国石油青海油田公司勘探开发研究院甘肃敦煌736202

柴达木盆地昆北断阶带为大型山前压扭冲断构造带,该构造带上的昆北油田切12区下干柴沟组下段发育厚层冲积扇沉积的砂砾岩储层.明确储层微观特征及发育控制因素,对冲断带砂砾岩储层评价与油藏治理具有重要意义.运用铸体薄片、X-衍射、扫... 详细信息

柴达木盆地昆北断阶带为大型山前压扭冲断构造带,该构造带上的昆北油田切12区下干柴沟组下段发育厚层冲积扇沉积的砂砾岩储层.明确储层微观特征及发育控制因素,对冲断带砂砾岩储层评价与油藏治理具有重要意义.运用铸体薄片、X-衍射、扫描电镜、常规压汞与恒速压汞等测试分析资料,系统研究冲积扇砂砾岩储层微观特征,明确储层发育的主控因素.结果表明,切12区砂砾岩储层具有成分成熟度低、结构成熟度低的岩石学特征,储集空间类型具双重孔隙介质特征,发育2类储层结构模态、4类储集空间类型、4类储层孔隙结构,储层物性为低孔、特低渗型储层,成岩作用阶段为早成岩阶段B期.在砂岩动力成岩作用相同的地质背景下,成岩作用对储层改造的影响是相对均衡的,储层发育程度的差异主要受控于沉积作用差异而导致的碎屑组成与结构差异,泥质含量是储层发育程度差异的主控因素,明确泥质含量上限为8%,颗粒分选对储层性质起重要控制作用.建立了基于泥质含量、物性、孔隙结构和产能指标的储层评价分类标准,将砂砾岩储层划分为4类;运用该认识指导油藏综合治理,并取得应用实效.

关键词：柴达木盆地昆北油田山前冲断带冲积扇砂砾岩储层控制因素石油地质

Aminobromination of Ethyl α-Cyanocinnamate Derivatives with 1,3-Dibromo-5,5-dimethylhydantoin（DBDMH） as Nitrogen and Halogen Sources

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Chemical Research in Chinese Universities 2015年第1期31卷 65-70页

作者： CHEN zhanguo liu Yali HU Junli liu De'e Key Laboratory for Macromolecular Science of Shaanxi Province School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 P R. China

1,3-Dibromo-5,5-dimethylhydantoin（DBDMH） was found to be a new and efficient nitrogen/halogen source for the aminobromination of ethyl a-cyanocinnamate derivatives catalyzed by K3PO4. The reaction afforded the aminobrominated products in high yields at room temperature, and the full regiospecificity of all the products were achieved. A possible pathway involving a Michael addition for this aminobromination was suggested.

关键词： Aminobromination Ethyl a-cyanocinnamate derivative 1,3-Dibromo-5,5-dimethylhydantoin(DBDMH)

深层—超深层优质碎屑岩储层成因及主控因素——以河套盆地临河坳陷古近系渐新统临河组为例

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石油勘探与开发 2024年第3期51卷 478-489页

作者：史原鹏刘占国王少春伍劲刘喜恒胡延旭陈树光冯广业王标王浩宇中国石油华北油田公司河北任丘062552 中国石油杭州地质研究院杭州310023

基于岩心、钻井和测井等新资料,结合大量岩矿测试分析,对河套盆地临河坳陷古近系渐新统临河组深层—超深层碎屑岩储层特征、成岩作用类型、异常高孔储层成因及发育控制因素开展系统分析。研究表明:(1)临河组深层—超深层碎屑岩异常高孔... 详细信息

基于岩心、钻井和测井等新资料,结合大量岩矿测试分析,对河套盆地临河坳陷古近系渐新统临河组深层—超深层碎屑岩储层特征、成岩作用类型、异常高孔储层成因及发育控制因素开展系统分析。研究表明:(1)临河组深层—超深层碎屑岩异常高孔储层储集空间以原生孔为主,抗压实能力强的物质组构基础、弱压实成岩动力场和流体弱压实-弱胶结成岩环境等3大有利成岩要素耦合利于原生孔大量保存;(2)临河组碎屑岩先存物质组构优越,石英、长石和刚性岩屑总含量平均值可达90%,抗压实能力强;(3)临河坳陷地温梯度低,仅为(2.0~2.6)℃/100 m,与早期长期浅埋—晚期快速深埋的埋藏方式共同形成弱压实成岩动力场环境;(4)咸化湖盆沉积地层的成岩环境中,成岩流体产生的压实作用弱,同时古盐度具有分异性,低盐度区胶结作用弱,利于原生孔保存;(5)沉积水动力条件、咸化湖盆古水体盐度分异和砂体厚度等3大因素共同控制临河组优质储层分布。

关键词：河套盆地临河坳陷古近系渐新统临河组深层—超深层异常高孔储层成因

Mechanical properties,thermal conductivity and defect formation energies of samarium immobilization in Gd_(2)Zr_(2)O_(7):First-principles study and irradiation experiment

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Journal of Rare Earths 2023年第3期41卷 422-433,I0004页

作者： Yuhao Wang Jiahu Ouyang Tao Wei Gui Cao zhanguo liu Zhaoying Ding Yujin Wang Yaming Wang Key Laboratory of Advanced Structural-Functional Integration Materials&Green Manufacturing Technology School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150001China Nuclear Fuel Cycle Research Theme Australian Nuclear Science and Technology OrganisationLocked Bag 2001Kirrawee DCNSW2232Australia

A density functional theory(DFT)study was employed to investigate the mechanical property,thermal conductivity,Debye temperature,electronic structure and defect chemistry of(Gd_(1-x)Sm_(x))_(2)Zr_(2)O_(7).All the(Gd_(1-x)Sm_(x))_(2)Zr_(2)O_(7) compounds exhibit an excellent structural and mechanical stability(Gd_(0.25)Sm_(0.75))_(2)Zr_(2)O_(7) has the lowest Young’s modulus of 213.7 GPa,the largest Possion’s ratio of 0.292,the lowest Debye temperature of 491.8 K and the lowest thermal *** calculated thermal conductivities of(Gd_(1-x)Sm_(x))_(2)Zr_(2)O_(7) are 1.17-1.21 W/(m·K)by the Clark’s model and 1.32-1.36 W/(m·K)by the Cahall’s model,*** formation energies of O vacancies at 48f site are negative,which increase with the Sm content,however,the formation energies of O vacancies at 8b site are almost *** addition,Sm partly occupying the Gd-site reduces distinctly the formation energies of defects such as A-site vacancies,cation antisite defects,anion Frenkel pairs of oxygen at 8b site and cation interstitials,which suggests that Sm-doped Gd_(2)Zr_(2)O_(7),especially equimolar GdSmZr_(2)O_(7),has a better irradiation *** the 16 MeVTa-ion irradiation at a fluence of 1×10^(14) or 2×10^(14) ions/cm^(2),the crystal structure of GdSmZr_(2)O_(7) transforms from pyrochlore to a defect fluorite without obvious amorphous phase.

关键词： Pyrochlores First-principles calculations Mechanical properties Defect formation energies Ion irradiation Rare earths

Microstructure, mechanical and thermo-physical properties of hot-pressed Al2O3-GdAlO3-ZrO2 ceramics with eutectic composition

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Progress in Natural Science:Materials International 2017年第4期27卷 491-497页

作者： Abdelkhalek Henniche Jiahu Ouyang Yonghui Ma Zhigang Wang zhanguo liu Yujin Wang Mehdi Derradji Xinyu liu School of Materials Science and Engineering Harbin Institute of Technology Laboratoire Génie des Matériaux Ecole Militaire Polytechnique Institute of Composite Materials Key Laboratory of Superlight Material and Surface Technology of Ministry of Education College of Materials Science and Chemical Engineering Harbin Engineering University

A low cost chemical co-precipitation method was employed to fabricate nanoscale Al2O3-GdAlO3-ZrO2powder with eutectic composition. A careful control of reaction conditions was required during the preparation. The synthesized nanopowders exhibited a particle size of 20-200 nm, and were highly dispersive and uniform. The results showed that calcination temperature had an important influence on the phase constituents of the nanopowders. With increasing the calcination temperature, a phase transformation from θ-Al2O3to α-Al2O3and a thermal decomposition from Gd3Al5O12(GdAG) to GdAlO3and α-Al2O3occurred in sequence. A calcination temperature of 1300 ℃ was needed for the crystallization of α-Al2O3. These nanosized powders were consolidated via hot pressing to produce a fully densified ceramic composite with eutectic composition. The Al2O3-GdAlO3-ZrO2ceramic hot-pressed at 1500 ℃ exhibited a relative density of 99.4%, a flexural strength of 485 MPa and a fracture toughness of 6.5 MPa m1/2. The ceramic had a thermal conductivity of 1.9 W m K-1at 1200 ℃ and a thermal expansion coefficient of 9.49 ×10-6K-1at 1100 ℃.

关键词： Al2O3-GdAlO3-ZrO2 system Co-precipitation hot pressing Flexural strength thermal conductivity

Microstructure and mechanical properties of(TiZrNbTaMo)C high-entropy ceramic

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Journal of Materials Science & Technology 2020年第4期39卷 99-105页

作者： Kai Wang Lei Chen Chenguang Xu Wen Zhang zhanguo liu Yujin Wang Jiahu Ouyang Xinghong Zhang Yudong Fu Yu Zhou School of Materials Science and Engineering Harbin Institute of TechnologyHarbin150001China National Key Laboratory of Science and Technology on Advanced Composites in Special Environment Harbin Institute of TechnologyHarbin150001China Key Laboratory of Advanced Structural-Functional Integration Materials&Green Manufacturing Technology Harbin Institute of TechnologyHarbin150001China College of Materials Science and Engineering Harbin Engineering UniversityHarbin150001China

A high-entropy(Ti Zr Nb Ta Mo)C ceramic has been successfully fabricated by hot pressing the newlysynthesized quinary carbide powder to investigate its microstructure and mechanical *** carbothermal reduction process of equimolar quinary metallic oxides at 1500℃for 1 h generates a carbide powder mixture,which consists mainly of Ta C-and Zr C-based solid *** as-synthesized powder was then sintered to form a single-phase high-entropy ceramic by a two-step hot pressing at 1850℃for1 h and 2100℃for 0.5 h,*** high-entropy ceramic exhibits a fine grain size of about 8.8μm,a high compositional uniformity and a high relative density of 98.6%by adding Mo as the strategic main *** measured nanohardness values of(TiZrNbTaMo)C ceramic are 25.3 GPa at 9.8 N and 31.3 GPa at 100 m N,respectively,which are clearly higher than those of other available high-entropy carbide ceramics.

关键词： High-entropy ceramic (TiZrNbTaMo)C Microstructure Enhanced hardness

基于云端大数据的电动汽车低温续驶里程工况构建

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汽车文摘 2024年第9期 1-7页

作者：梁禹迪董立甲刘占国张元勤王世英朱伟中国第一汽车股份有限公司研发总院长春130013 高端汽车集成与控制全国重点实验室长春130013

为了构建电动汽车的低温续驶里程工况,利用用户自然场景中电动汽车的T-BOX云端大数据平台,应用主成分分析选取了速度相关参数,通过聚类分析方法获取了低速、中速和高速的运动学片段,对比了电动汽车在常温和低温下的行驶速度差异,根据概... 详细信息

为了构建电动汽车的低温续驶里程工况,利用用户自然场景中电动汽车的T-BOX云端大数据平台,应用主成分分析选取了速度相关参数,通过聚类分析方法获取了低速、中速和高速的运动学片段,对比了电动汽车在常温和低温下的行驶速度差异,根据概率密度计算结果建立了适用于低温试验的速度曲线,同时提取环境温度、空调等级与空调温度等维度的信息,分析了环境温度与空调设置的关系,得到适用于低温试验的环境温度和空调设置信息。结果表明,低温与常温相比,电动汽车低速行驶时间延长了3%,中速和高速的行驶时间分别降低了2%和1%,并且环境温度截止至-22℃,空调等级设置为3级,空调温度设置为26℃可以代表大多数用户的使用场景,最终构建了更加贴近用户实际的电动汽车低温续驶里程工况。

关键词：电动汽车大数据低温续驶里程自然场景

Development,sand control mechanism and hydrocarbon accumulation of beach-bar sandstone in a saline lake basin:A case from the Neogene of southwestern Qaidam Basin,NW China

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石油勘探与开发:英文版 2023年第4期50卷 851-864页

作者： WANG Yanqing liu zhanguo SONG Guangyong ZHU Chao LI Senming WU Yanxiong XIA Zhiyuan SHI Qi JIA Shenglong WANG Zhaobing WEI Xuebin PetroChina Hangzhou Institute of Geology Hangzhou 310023China PetroChina Qinghai Oilfield Company Dunhuang 736202China

Based on the data of field outcrops,drilling cores,casting thin sections,well logging interpretation,oil/gas shows during drilling,and oil/gas testing results,and combined with modern salt-lake sediments in the Qinghai Lake,the Neogene saline lake beach-bars in southwestern Qaidam Basin are studied from the perspective of sedimentary characteristics,development patterns,sand control factors,and hydrocarbon accumulation ***-bar sand bodies are widely developed in the Neogene saline lake basin,and they are lithologically fine sandstone and siltstone,with wavy bedding,low-angle cross bedding,and lenticular-vein *** view of spatial-temporal distribution,the beach-bar sand bodies are stacked in multiple stages vertically,migratory laterally,and extensive and continuous in NW-SE trending pattern in the *** stacking area of the Neogene beach-bar sandstone is predicted to be 3000 km^(2).The water salinity affects the sedimentation rate and offshore distance of beach-bar sandstone,and the debris input from the source area affects the scale and enrichment of beach-bar *** ancient landform controls the morphology and stacking style of beach-bar sandstone,and the northwest monsoon driving effect controls the long-axis extension direction of beach-bar *** beach-bars have a reservoir-forming feature of“one reservoir in one sand body”,with thick beach-bar sand bodies controlling the effective reservoir distribution and oil-source faults controlling the oil/gas migration and accumulation *** favorable exploration target zones in Zhahaquan,Yingdong-eastern Wunan and Huatugou areas are proposed based on the analysis of reservoir-forming elements.

关键词： Qaidam Basin Neogene saline lake basin sedimentary characteristics beach-bar sand control mechanism reservoir characteristics

The Anlysis of Follow - up Data after Physical Examination for Modification Equipment in F- 6 Pilots

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美国中华健康卫生杂志 2005年第4期8卷 34-37页

作者： XU Xianrong LI Hongqi liu Hongjin JIN zhanguo Center of Clinic Aviation Medicine PLA General Hospital of Air Force Beijing 100036 China