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Wide gap active brazing of ceramic-to-metal-joints for high temperature applications
K. Bobzin,L. Zhao,N. Kopp,S. Samadian Anavar
《机械工程前沿(英文)》 2014年 第9卷 第1期 页码 71-74 doi: 10.1007/s11465-014-0291-0
Applications like solid oxide fuel cells and sensors increasingly demand the possibility to braze ceramics to metals with a good resistance to high temperatures and oxidative atmospheres. Commonly used silver based active filler metals cannot fulfill these requirements, if application temperatures higher than 600°C occur. Au and Pd based active fillers are too expensive for many fields of use. As one possible solution nickel based active fillers were developed. Due to the high brazing temperatures and the low ductility of nickel based filler metals, the modification of standard nickel based filler metals were necessary to meet the requirements of above mentioned applications. To reduce thermally induced stresses wide brazing gaps and the addition of Al2O3 and WC particles to the filler metal were applied. In this study, the microstructure of the brazed joints and the thermo-chemical reactions between filler metal, active elements and WC particles were analyzed to understand the mechanism of the so called wide gap active brazing process. With regard to the behavior in typical application oxidation and thermal cycle tests were conducted as well as tensile tests.
关键词: wide gap active brazing nickel filler metals high temperature application WC Al2O3
阎红
《中国工程科学》 2007年 第9卷 第11期 页码 172-174
探讨了在工矿企业中10kV高压电力电缆在线运行温度检测的必要性与实际应用;列举了感温元件 的选型方法以及温度监测系统的组成与运行;介绍了信息处理软件和故障诊断专家系统软件、电力设备底层 信息网、现场总线技术在电力系统中的应用;实现了不停电状态下对高压电缆及电缆接头等各种电缆的故障 在线监测及诊断功能。
关键词: 10kV高压电力电缆 终端头 温度传感器 监测系统
Emerging challenges to structural integrity technology for high-temperature applications
TU Shantung
《机械工程前沿(英文)》 2007年 第2卷 第4期 页码 375-387 doi: 10.1007/s11465-007-0066-y
关键词: manufacture aviation industry conversion petrochemical temperature
Continuous deacylation of amides in a high-temperature and high-pressure microreactor
《化学科学与工程前沿(英文)》 2022年 第16卷 第12期 页码 1818-1825 doi: 10.1007/s11705-022-2182-y
关键词: amide deacylation microreactor flow chemistry reaction intensification
A novel high-temperature and high-pressure hydraulic pump based on mononeuron control
Linhui ZHAO, Xin FANG
《机械工程前沿(英文)》 2009年 第4卷 第2期 页码 219-223 doi: 10.1007/s11465-009-0024-y
关键词: mononeuron PID control hydraulic pump pressure fluctuation
Zhiwei MA, Huashan BAO, Anthony Paul ROSKILLY
《能源前沿(英文)》 2017年 第11卷 第4期 页码 503-509 doi: 10.1007/s11708-017-0515-1
关键词: absorption compression high temperature heat pump efficiency industrial waste heat thermodynamic analysis
张作义,吴宗鑫,王大中,童节娟
《中国工程科学》 2019年 第21卷 第1期 页码 12-19 doi: 10.15302/J-SSCAE-2019.01.003
高温气冷堆和在此基础上发展起来的超高温气冷堆是第四代核能系统研发重点的6种堆型之一。本文介绍了高温气冷堆的特点,对高温气冷堆技术在国内外的最新研发进展进行了简要综述,对高温气冷堆的发展定位等问题进行了讨论。在此基础上对我国高温气冷堆发展路线进行了展望。我国高温气冷堆技术历经跟踪、跨越和自主创新,目前在商业规模模块式高温气冷堆核电站技术上处于世界领先地位。在此基础上,我国正在启动部署后续60万千瓦级模块式高温气冷堆核电机组的研发和配套关键技术的攻关工作,以进一步推动高温气冷堆技术的产业化,保持我国在该领域的国际领先优势。
Edge detection of steel plates at high temperature using image measurement
Qiong Zhou, Qi An
《机械工程前沿(英文)》 2009年 第4卷 第1期 页码 77-82 doi: 10.1007/s11465-009-0013-1
关键词: thermal expansion image measurement edge detection image calibration
Effect of extrusion temperature on the physical properties of high-silicon aluminum alloy
YANG Fuliang, GAN Weiping, CHEN Zhaoke
《机械工程前沿(英文)》 2007年 第2卷 第1期 页码 120-124 doi: 10.1007/s11465-007-0021-y
关键词: coefficient hermeticity temperature relationship air-atomization
Modeling the gas flow in a cyclone separator at different temperature and pressure
Gujun WAN, Guogang SUN, Cuizhi GAO, Ruiqian DONG, Ying ZHENG, Mingxian SHI
《化学科学与工程前沿(英文)》 2010年 第4卷 第4期 页码 498-505 doi: 10.1007/s11705-010-0502-0
关键词: cyclone separator high temperature high pressure flow field numerical simulation
《结构与土木工程前沿(英文)》 2021年 第15卷 第3期 页码 806-819 doi: 10.1007/s11709-021-0731-y
关键词: polymer bitumen microstructure rheology viscoelasticity
Laboratory study on high-temperature adsorption of HCl by dry-injection of Ca(OH)
Junjun TAN,Guohua YANG,Jingqiao MAO,Huichao DAI
《环境科学与工程前沿(英文)》 2014年 第8卷 第6期 页码 863-870 doi: 10.1007/s11783-013-0618-9
关键词: acid gas HCl Ca(OH)2 dry adsorption high temperature dual-layer granular bed filter
A review of low-temperature plasma-assisted machining: from mechanism to application
《机械工程前沿(英文)》 2023年 第18卷 第1期 doi: 10.1007/s11465-022-0734-y
关键词: low-temperature plasma difficult-to-cut material machinability hydrophilization effect Rehbinder effect
《能源前沿(英文)》 2022年 第16卷 第2期 页码 263-276 doi: 10.1007/s11708-021-0791-7
关键词: ammonia mixed with syngas laminar flame speed kinetic model sensitivity analysis pathway analysis
《农业科学与工程前沿(英文)》 2021年 第8卷 第2期
D1 protein turnover and the xanthophyll cycle (XC) are important photoprotective mechanisms in plants that operate under adverse conditions. Here, streptomycin sulfate (SM) and dithiothreitol (DTT) were used in tomato plants as inhibitors of D1 protein turnover and XC to elucidate their photoprotective impacts under sub-high temperature and high light conditions (HH, 35°C, 1000 µmol·m-2·s-1). SM and DTT treatments significantly reduced the net photosynthetic rate, apparent quantum efficiency, maximum photochemical efficiency, and potential activity of photosystem II, leading to photoinhibition and a decline in plant biomass under HH. The increase in reactive oxygen species levels resulted in thylakoid membrane lipid peroxidation. In addition, there were increased non-photochemical quenching and decreased chlorophyll pigments in SM and DTT application, causing an inhibition of D1 protein production at both transcriptional and translational levels. Overall, inhibition of D1 turnover caused greater photoinhibition than XC inhibition. Additionally, the recovery levels of most photosynthesis indicators in DTT-treated plants were higher than in SM-treated plants. These findings support the view that D1 turnover has a more important role than XC in photoprotection in tomato under HH conditions.
关键词: D1 turnover / photoinhibition / photoprotection / photosynthesis / tomato / xanthophyll cycle
标题 作者 时间 类型 操作
Wide gap active brazing of ceramic-to-metal-joints for high temperature applications
K. Bobzin,L. Zhao,N. Kopp,S. Samadian Anavar
期刊论文
Emerging challenges to structural integrity technology for high-temperature applications
TU Shantung
期刊论文
A novel high-temperature and high-pressure hydraulic pump based on mononeuron control
Linhui ZHAO, Xin FANG
期刊论文
Numerical study of a hybrid absorption-compression high temperature heat pump for industrial waste heat
Zhiwei MA, Huashan BAO, Anthony Paul ROSKILLY
期刊论文
Effect of extrusion temperature on the physical properties of high-silicon aluminum alloy
YANG Fuliang, GAN Weiping, CHEN Zhaoke
期刊论文
Modeling the gas flow in a cyclone separator at different temperature and pressure
Gujun WAN, Guogang SUN, Cuizhi GAO, Ruiqian DONG, Ying ZHENG, Mingxian SHI
期刊论文
Influence of morphology on high-temperature rheological properties of bitumen modified with styrene-butadiene-styrene
期刊论文
Laboratory study on high-temperature adsorption of HCl by dry-injection of Ca(OH)
Junjun TAN,Guohua YANG,Jingqiao MAO,Huichao DAI
期刊论文
Experimental and kinetic study on laminar flame speeds of ammonia/syngas/air at a high temperature and
期刊论文