资源类型

期刊论文 16

年份

2023 4

2021 1

2020 1

2018 1

2015 2

2013 1

2012 1

2010 2

2003 1

2001 1

2000 1

展开 ︾

关键词

8英寸 1

Nd-YAG 1

RE-Si3N4 1

SiC绝缘侧壁 1

下沉 1

低温铝电解 1

侧壁土压力 1

决策树 1

分类 1

半导体激光器,光泵浦垂直外腔面发射激光器,纳米激光器,拓扑绝缘体激光器 1

声表面波 1

惰性阳极 1

惰性阴极 1

拓扑绝缘体;Sb2Te3;光纤激光;被动调Q激光;波长可调谐激光 1

控制指标 1

数据挖掘 1

杂质行为 1

沉井 1

沟槽栅 1

展开 ︾

检索范围:

排序: 展示方式:

中国铝工业应用新型电极材料的研究与展望

邱竹贤

《中国工程科学》 2001年 第3卷 第5期   页码 50-54

摘要:

介绍了现代铝工业上新近开发研制的几种电极材料,涉及惰性阴极、惰性阳极、双极性电极等;还研制了低温电解质,使电解温度降低到800~900℃。如果惰性电极与低温电解质配合起来应用,则能够明显减少工业铝生产中的物料消耗,节省电能,增大电解槽生产能力,并改善环境状况,可望大幅度降低生产成本。

关键词: 惰性阳极     惰性阴极     SiC绝缘侧壁     低温铝电解    

Design and mechanism insight on SiC quantum dots sensitized inverse opal TiO with superior photocatalytic

《化学科学与工程前沿(英文)》 2023年 第17卷 第12期   页码 1913-1924 doi: 10.1007/s11705-023-2350-8

摘要: The combination of SiC quantum dots sensitized inverse opal TiO2 photocatalyst is designed in this work and then applied in wastewater purification under simulated sunlight. From various spectroscopic techniques, it is found that electrons transfer directionally from SiC quantum dots to inverse opal TiO2, and the energy difference between their conduction/valence bands can reduce the recombination rate of photogenerated carriers and provide a pathway with low interfacial resistance for charge transfer inside the composite. As a result, a typical type-II mechanism is proved to dominate the photoinduced charge transfer process. Meanwhile, the composite achieves excellent photocatalytic performances (the highest apparent kinetic constant of 0.037 min–1), which is 6.2 times (0.006 min–1) and 2.1 times (0.018 min–1) of the bare inverse opal TiO2 and commercial P25 photocatalysts. Therefore, the stability and non-toxicity of SiC quantum dots sensitized inverse opal TiO2 composite enables it with great potential in practical photocatalytic applications.

关键词: inverse opal TiO2     silicon carbide quantum dots     quantum dot sensitized photocatalyst     type-II charge transfer route    

决策树技术在电缆绝缘状态评估中的应用

孙秋野,张化光,张铁岩

《中国工程科学》 2010年 第12卷 第2期   页码 90-94

摘要:

电缆的绝缘状态通常可以分为良好、不好、差和故障等几种,以电缆的日常检修数据、试验数据和在线监测数据为基础,对电缆的状态进行判断是一个非常有意义的课题采用决策树分类技术来对电缆的绝缘状态进行分类,分别对各种类型数据形成子树,然后通过子树合成技术形成最终的决策树,从而对电缆的绝缘状态进行判断。通过一个实际电缆的各种数据,采用SPSS软件进行实际应用,最终的仿真结果说明决策树技术是一种非常有效的电缆绝缘状态分类技术。

关键词: 决策树     分类     数据挖掘     电缆绝缘    

Effect of process parameters on the density and porosity of laser melted AlSi10Mg/SiC metal matrix composite

Omotoyosi H. FAMODIMU, Mark STANFORD, Chike F. ODUOZA, Lijuan ZHANG

《机械工程前沿(英文)》 2018年 第13卷 第4期   页码 520-527 doi: 10.1007/s11465-018-0521-y

摘要:

Laser melting of aluminium alloy—AlSi10Mg has increasingly been used to create specialised products in various industrial applications, however, research on utilising laser melting of aluminium matrix composites in replacing specialised parts have been slow on the uptake. This has been attributed to the complexity of the laser melting process, metal/ceramic feedstock for the process and the reaction of the feedstock material to the laser. Thus, an understanding of the process, material microstructure and mechanical properties is important for its adoption as a manufacturing route of aluminium metal matrix composites. The effects of several parameters of the laser melting process on the mechanical blended composite were thus investigated in this research. This included single track formations of the matrix alloy and the composite alloyed with 5% and 10% respectively for their reaction to laser melting and the fabrication of density blocks to investigate the relative density and porosity over different scan speeds. The results from these experiments were utilised in determining a process window in fabricating near-fully dense parts.

关键词: selective laser melting     additive manufacturing     mechanical alloying     powder metallurgy     aluminium metal matrix composite    

软磁复合材料硝酸钠钝化绝缘包覆新技术 Article

严密, 陈起明, 刘冬, 吴琛, 王健

《工程(英文)》 2023年 第20卷 第1期   页码 134-142 doi: 10.1016/j.eng.2022.01.016

摘要:

本研究发明了制备FeSiAl软磁复合材料(SMC)的硝酸钠钝化绝缘包覆新技术。结合成分组成和微观结构分析,研究了不同pH条件下包覆层的生成规律,发现酸性NaNO3溶液钝化形成的绝缘包覆层由Fe2O3、SiO

关键词: 软磁复合材料     表面钝化     绝缘包覆技术     生长机理     磁性能    

舰船管系绝缘密封垫片电绝缘性能研究

李竹影,曹文康,刘冶,张晓东

《中国工程科学》 2015年 第17卷 第5期   页码 58-62

摘要:

研究了用于舰船管系异种金属绝缘的石棉橡胶纤维垫片和环氧垫片在海水、碱溶液(10 % NaOH溶液)、酸溶液(10 % H2SO4溶液)和重油中浸泡后,其体电阻率和面电阻率随浸泡时间的变化规律。厘米)量级,在海水中的电绝缘有效期约为4个月,环氧垫片的湿态电阻可保持为104~6欧姆(或欧姆?厘米)量级,环氧材料组成的垫片其绝缘性能远好于石棉橡胶纤维垫片的绝缘性能。

关键词: 石棉橡胶纤维垫片;环氧垫片;电阻率    

8英寸绝缘栅双极型晶体管 (IGBT) 关键技术研究 Article

刘国友,丁荣军,罗海辉

《工程(英文)》 2015年 第1卷 第3期   页码 361-366 doi: 10.15302/J-ENG-2015043

摘要:

基于8英寸绝缘栅双极型晶体管 (IGBT) 生产线的建设,重点解决了8英寸IGBT先进工艺技术、第四代高压双扩散金属氧化物半导体 (DMOS+) IGBT技术和第五代沟槽栅IGBT技术等关键技术问题

关键词: 绝缘栅双极型晶体管 (IGBT)     高功率密度     沟槽栅     8英寸     轨道交通    

CuO/zeolite catalyzed oxidation of gaseous toluene under microwave heating

Longli BO, Jianbo LIAO, Yucai ZHANG, Xiaohui WANG, Quan YANG

《环境科学与工程前沿(英文)》 2013年 第7卷 第3期   页码 395-402 doi: 10.1007/s11783-012-0417-8

摘要: The development of a combined process of catalytic oxidation and microwave heating for treatment of toluene waste gas was described in this work. Toluene, a typical toxic volatile organic compound, was oxidized through a fixed bed reaction chamber containing zeolite-supported copper oxide (CuO/zeolite) catalyst mixed with silicon carbide (SiC), an excellent microwave-absorbing material. The target compound was efficiently degraded on the surface of the catalyst at high reaction temperature achieved by microwave-heated SiC. A set of experimental parameters, such as microwave power, air flow and the loading size of CuO etc., were investigated, respectively. The study demonstrated these parameters had critical impact on toluene degradation. Under optimal condition, 92% toluene was removed by this combined process, corresponding to an 80%–90% TOC removal rate. Furthermore, the catalyst was highly stable even after eight consecutive 6-h runs. At last, a hypothetical degradation pathway of toluene was proposed based on the experimental data obtained from gas chromatography-mass spectrum and Fourier transform infrared spectroscopy analyses.

关键词: microwave     catalytic oxidation     CuO/zeolite catalyst     silicon carbide (SiC)     toluene    

基于LiNbO3/SiO2/SiC异质结构实现44 GHz超高频声表面波谐振器 Article

周剑, 张定红, 刘炀辉, 卓凤玲, 钱莉荣, 李红浪, 傅永庆, 段辉高

《工程(英文)》 2023年 第20卷 第1期   页码 112-119 doi: 10.1016/j.eng.2022.05.003

摘要: 针对上述关键问题,本文提出将极端纳米制造技术与LiNbO3/SiO2/SiC异质结构衬底相结合的策略,成功制备出波长为160 nm的超高频SAW器件,其高阶模态谐振频率高达约基于LiNbO3/SiO2/SiC 异质结构衬底的超高频SAW呈现出多种模态,理论仿真分析确定了高阶声波模态的波模态。

关键词: 超高频     声表面波     高阶声波模态     高灵敏度    

锚碇沉井基础施工期安全监控技术

冯兆祥,王锦国,王建

《中国工程科学》 2010年 第12卷 第4期   页码 68-72

摘要: 施工期监测成果分析表明:沉井下沉初期沉井底部刃脚附近水平方向的拉应力较大,将此项物理量作为下沉的控制指标,有效指导了沉井施工;侧壁土压力分布随入土深度呈先增加后减小规律。

关键词: 沉井     控制指标     下沉     侧壁土压力    

Application of grey-taguchi method for optimization of dry sliding wear properties of aluminum MMCs

Rajesh SIRIYALA, Gopala Krishna ALLURU, Rama Murthy Raju PENMETSA, Muthukannan DURAISELVAM

《机械工程前沿(英文)》 2012年 第7卷 第3期   页码 279-287 doi: 10.1007/s11465-012-0329-0

摘要:

Through a pin-on-disc type wear setup, the dry sliding wear behavior of SiC-reinforced aluminum composites produced using the molten metal mixing method was investigated in this paper. Dry sliding wear tests were carried on SiC-reinforced metal matrix composites (MMCs) and its matrix alloy sliding against a steel counter face. Different contact stresses, reinforcement percentages, sliding distances, and sliding velocities were selected as the control variables, and the responses were selected as the wear volume loss (WVL) and coefficient of friction (COF) to evaluate the dry sliding performance. An L25 orthogonal array was employed for the experimental design. Initially, the optimization of the dry sliding performance of the SiC-reinforced MMCs was performed using grey relational analysis (GRA). Based on the GRA, the optimum level parameters for overall grey relational grade in terms of WVL and COF were identified. Analysis of variance was performed to determine the effect of individual factors on the overall grey relational grade. The results indicated that the sliding velocity was the most effective factor among the control parameters on dry sliding wear, followed by the reinforcement percentage, sliding distance, and contact stress. Finally, the wear surface morphology and wear mechanism of the composites were investigated through scanning electron microscopy.

关键词: aluminum     ANOVA (analysis of variance)     grey relational analysis     metal matrix composites     SiC particulates     Taguchi    

高线性度U波段功率放大器设计:新型交调点分析方法 Research Article

崔杰,李佩佩,盛卫星

《信息与电子工程前沿(英文)》 2023年 第24卷 第1期   页码 176-186 doi: 10.1631/FITEE.2200082

摘要: 介绍了基于格罗方德(GlobalFoundries) 45 nm绝缘体硅工艺的AB类线性毫米波功率放大器(PA)的分析、设计和测试情况。

关键词: 绝缘体硅;线性分析;毫米波;功率放大器    

基于拓扑绝缘体Sb2Te3的52 nm宽谱可调谐被动调Q掺镱光纤激光器 Research

王涛1,俞强1,2,郭琨1,史鑫尧2,阚雪芬3,徐轶君4,5,吴坚1,4,张凯2,周朴1

《信息与电子工程前沿(英文)》 2021年 第22卷 第3期   页码 287-436 doi: 10.1631/FITEE.2000577

摘要: 拓扑绝缘体Sb2Te3具有从可见光到红外波段的宽谱可饱和吸收的优点。在本研究中,首先将拓扑绝缘体家族中的二维材料Sb2Te3可饱和吸收体应用在宽谱可调谐被动调Q掺镱光纤激光器中。

关键词: 拓扑绝缘体;Sb2Te3;光纤激光;被动调Q激光;波长可调谐激光    

结构功能一体化的高性能陶瓷材料的研究与开发

江东亮

《中国工程科学》 2003年 第5卷 第2期   页码 35-39

摘要:

从当前新材料的开发和材料科学发展向多功能、小型化、复合化、低成本制备等要求出发, 并就现有高性能陶瓷材料的基本性能和材料制备工艺上的优缺点进行了分析;简要介绍了碳化硅(SiC)陶瓷、 添加Nd的钇铝石榴子石

关键词: 结构和功能一体化     高性能陶瓷     碳化硅     Nd-YAG     RE-Si3N4    

硅及硅基半导体材料中杂质缺陷和表面的研究

屠海令

《中国工程科学》 2000年 第2卷 第1期   页码 7-17

摘要: 同时还介绍了外延硅、锗硅及绝缘体上硅(SOI)等硅基材料的特性、制备及工艺技术发展趋势,展望了跨世纪期间硅及硅基材料产业发展的技术经济前景。

关键词: 硅片     硅外延片     锗硅     绝缘体上硅     杂质行为     缺陷控制     表面质量    

标题 作者 时间 类型 操作

中国铝工业应用新型电极材料的研究与展望

邱竹贤

期刊论文

Design and mechanism insight on SiC quantum dots sensitized inverse opal TiO with superior photocatalytic

期刊论文

决策树技术在电缆绝缘状态评估中的应用

孙秋野,张化光,张铁岩

期刊论文

Effect of process parameters on the density and porosity of laser melted AlSi10Mg/SiC metal matrix composite

Omotoyosi H. FAMODIMU, Mark STANFORD, Chike F. ODUOZA, Lijuan ZHANG

期刊论文

软磁复合材料硝酸钠钝化绝缘包覆新技术

严密, 陈起明, 刘冬, 吴琛, 王健

期刊论文

舰船管系绝缘密封垫片电绝缘性能研究

李竹影,曹文康,刘冶,张晓东

期刊论文

8英寸绝缘栅双极型晶体管 (IGBT) 关键技术研究

刘国友,丁荣军,罗海辉

期刊论文

CuO/zeolite catalyzed oxidation of gaseous toluene under microwave heating

Longli BO, Jianbo LIAO, Yucai ZHANG, Xiaohui WANG, Quan YANG

期刊论文

基于LiNbO3/SiO2/SiC异质结构实现44 GHz超高频声表面波谐振器

周剑, 张定红, 刘炀辉, 卓凤玲, 钱莉荣, 李红浪, 傅永庆, 段辉高

期刊论文

锚碇沉井基础施工期安全监控技术

冯兆祥,王锦国,王建

期刊论文

Application of grey-taguchi method for optimization of dry sliding wear properties of aluminum MMCs

Rajesh SIRIYALA, Gopala Krishna ALLURU, Rama Murthy Raju PENMETSA, Muthukannan DURAISELVAM

期刊论文

高线性度U波段功率放大器设计:新型交调点分析方法

崔杰,李佩佩,盛卫星

期刊论文

基于拓扑绝缘体Sb2Te3的52 nm宽谱可调谐被动调Q掺镱光纤激光器

王涛1,俞强1,2,郭琨1,史鑫尧2,阚雪芬3,徐轶君4,5,吴坚1,4,张凯2,周朴1

期刊论文

结构功能一体化的高性能陶瓷材料的研究与开发

江东亮

期刊论文

硅及硅基半导体材料中杂质缺陷和表面的研究

屠海令

期刊论文