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JOINING MECHANISMS OF β"-Al_2O_3 CERAMIC AND PYREX GLASS TO Al MATRIX COMPOSITE

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Chinese Journal of Mechanical Engineering 2008年第2期21卷 42-44页

作者： LIU Cuirong meng qingsen LU Xiaoying HU Lifang College of Material Science and Engineering Taiyuan University of Technology Taiyuan 030024 China College of Material Science and Engineering Taiyuan University of Science and Technology Taiyuan 030024 China

The bonding of β″-Al2O3 and pyrex glass to A1 matrix composites by anodic bonding process is achieved. The microstructure of the bonded interface and the joining mechanisms are analyzed with scanning electron microscope （SEM）, energy dispersive X-ray fluorescence spectrometer （EDX）. It is observed that the bonding region across the interface consists of the metal layer, oxide transitional layer and the ceramic layer, with the transitional layer composed of surface region and sub-surface region. The bonding process can mainly be categorized into anodic bonding process and solid state diffusing process. The pile-up of the ions and its drift in the interface area are the main reasons for anode oxidation and joining of the interface. The temperature, voltage and the drift ions in the ceramic or glass during the bonding process are the essential conditions to solid state diffusing and oxide bonding at the interface. The voltages, temperature, pressure as well as the surface state are the main factors that influence the anodic bonding.

关键词： β″-Al2O3 Pyrex glass Al matrix composite Anodic bonding

Structural Characterization of AlMgB_(14) Prepared by Field-activated, Pressure-assisted Synthesis

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Journal of Materials Science & Technology 2013年第1期29卷 77-81页

作者： Wen Liu Yang Miao qingsen meng Shaoping Chen College of Materials Science and Engineering Taiyuan University of Technology School of Chemical and Biological Engineering Taiyuan University of Science and Technology

Mechanical alloying （MA） and field-activated, pressure-assisted synthesis （FAPAS） were used for the in situ synthesis and densification of ultra-hard, super-abrasive AIMgB14 metallic ceramic, performed at 1500 ℃ under a pressure of 60 MPa with the elemental constituents of aluminum, magnesium, and boron. The microstructure and components of synthesized metallic ceramic were observed and determined by scanning electron microscopy （SEM）, energy dispersive X-ray analysis （EDX）, X-ray diffraction （XRD）, and transmission electron microscopy （TEM）. The results showed that the main components of the samples were AIMgB14 with a few ***204 was derived from the contamination of the preliminary powders and the milling process. The average hardness of the samples that provided the results was 26.1 GPa. The average density of the samples was 2.62 g/cm^3, which is 98% of its theoretical density. The sample of AIMgB14-TiB2 composite with 30 wt% TiB2 had a hardness of 29.5 GPa, which is consistent with that of AIMgB14-TiB2 composite with 30 wt% TiB2 prepared by mechanical alloying/hot uniaxial pressing. Thus, a new approach was developed using the mechanical alloying and FAPAS process to synthesize AIMgB14 with fast heating, high efficiency, energy saving, and high yield.

关键词： Field-activated and Pressure-assisted synthesis (FAPAS) AIMgB14 Borides Microstructure

Study on bonding interface characteristics and numerical simulation of stress of Aluminum and Glass for Application in MEMS

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Study on bonding interface characteristics and numerical sim...

次磺酰胺类促进剂高盐高化学需氧量生产废水综合处理工艺的开发

2014中国功能材料科技与产业高层论坛

作者： Xu Yin Cuirong Liu Yue Nan qingsen meng Tai Yuan University of science and Technology TaiYuan University of Technology

Multilayer anodic bonding technology has become one of the key technologies of encapsulation devices of micro electro mechanical *** using many times of anode method can achieve the good bonding of glass and aluminum alloy of different layers;and using nonlinear finite element analysis software MARC,comparing to the microscopic interface mechanical properties of glass and aluminum of different layers after bonding,can explore the trend of residual stress with the increase of layer *** analysis results show that,the bigthermal expansion coefficient difference of the glass and aluminum anodic bonding specimen during cooling easily produce the residual stress and *** the design ofsymmetrical multilayer structure,the residual stress and strain near the interface are symmetrical and help ease the deformation of the transition layer,the maximum residual stress occurs at the center of the transition layer,the results have important significance of improving the bonding quality of multilayer packaging devices of MEMS.

关键词： anodic bonding bonding layers residual stress finite element analysis

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橡胶工业 2022年第9期69卷 704-708页

作者：孟庆森科迈化工股份有限公司天津300270

将树脂吸附工艺、催化湿法氧化工艺、臭氧氧化工艺和蒸发浓缩工艺有机结合,实现次磺酰胺类促进剂高盐高化学需氧量(COD)生产废水100%资源化处理。生产废水处理步骤如下:生产废水经树脂吸附回收有机胺类原料,通过催化湿法氧化+臭氧氧化... 详细信息

将树脂吸附工艺、催化湿法氧化工艺、臭氧氧化工艺和蒸发浓缩工艺有机结合,实现次磺酰胺类促进剂高盐高化学需氧量(COD)生产废水100%资源化处理。生产废水处理步骤如下:生产废水经树脂吸附回收有机胺类原料,通过催化湿法氧化+臭氧氧化两级氧化减小COD,再通过多级树脂吸附去除重金属离子、钙离子和镁离子等后进行蒸发浓缩,所得处理水满足离子膜烧碱一级进水标准,实现促进剂生产废水的零排放。

关键词：次磺酰胺类促进剂生产废水树脂吸附催化湿法氧化臭氧氧化蒸发浓缩综合处理

Mechanical Properties of AlMgB14-xTiB2 Prepared by Field Activated and Pressure Assisted Synthesis

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Mechanical Properties of AlMgB14-xTiB2 Prepared by Field Act...

AZ31B镁合金表面激光熔敷+搅拌摩擦加工改性层结构与性能

中国材料大会2012

作者： Yang Miao Wen Liu Lei Zhuang Huiling Cheng qingsen meng College of Materials Science and Engineering Taiyuan University of Technology Institute of Chemical and Biological Technology Taiyuan University of Science and Technology

ISBN: (纸本)9783037856079

In this paper, Mechanical alloying （MA） and field activated and pressure assisted synthesis （FAPAS） were used for preparing the ultra-hard, super-abrasive AlMgB14 -xTiB2 composite ceramic. The samples were fabricated at 1500℃ under a pressure of 60 MPa. The microstructures and compositions of samples were observed and determined by scanning electron microscopy （SEM）, energy dispersive X-ray analysis （EDX）, X-ray diffraction （XRD）. It was indicated that addition of TiB 2 was effective for increasing both quantities. A maximum Vichers hardness of 38.5GPa and a fracture toughness of 3.85MPam（1/2）of AlMgB14 reinforced with 70 wt.% of TiB 2 were achieved. Abrasion wear tests showed that adding TiB2 would improve the wearability obviously.

关键词： FAPAS AlMgB1-xTiB2 Ultra-hard boride Mechanical properties.

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稀有金属材料与工程 2016年第9期45卷 2419-2423页

作者：刘奋军孟庆森李增生榆林学院陕西榆林719000 太原理工大学山西太原030024

采用激光熔敷和搅拌摩擦加工相结合的方法在AZ31B镁合金表面分别制备了Cu+Al和Si+Al改性层。通过SEM、XRD、显微硬度测试以及电化学腐蚀对表面改性层的微观组织、相组成、显微硬度及耐腐蚀等性能进行分析。结果表明,用Cu+Al和Si+Al粉末... 详细信息

采用激光熔敷和搅拌摩擦加工相结合的方法在AZ31B镁合金表面分别制备了Cu+Al和Si+Al改性层。通过SEM、XRD、显微硬度测试以及电化学腐蚀对表面改性层的微观组织、相组成、显微硬度及耐腐蚀等性能进行分析。结果表明,用Cu+Al和Si+Al粉末制备的改性层化合物分别主要由β-Al_(12)Mg_(17)及少量的Al Cu_4、Al Mg和Mg_2Si、Al Mg及少量的β-Al_(12)Mg_(17)组成。搅拌摩擦加工改性层与镁合金基体结合良好,表面平整光滑、组织均匀细小。与镁合金基体相比,表面改性层的显微硬度和耐腐蚀性能均得到明显提高,经搅拌摩擦加工之后的添加Si+Al混合粉末改性层的HV显微硬度值最高可达2.96 GPa,比母材提高了385.3%;添加Cu+Al混合粉末改性层的自腐蚀电位最高可达–0.975 V,比母材提高了37.4%。

关键词： AZ31B镁合金激光熔敷搅拌摩擦加工显微硬度耐腐蚀性能

三元缺陷化合物CuGa_3Te_5的热电性能

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稀有金属材料与工程 2014年第12期43卷 3129-3132页

作者：任伟孟庆森陈少平孙政崔教林太原理工大学山西太原030024 宁波工程学院浙江宁波315016

采用放电等离子烧结法(SPS)制备了三元缺陷化合物Cu Ga3Te5热电半导体,并分析研究了其结构和热电性能。XRD分析结果表明,该半导体为单相化合物Cu Ga3Te5,直接带隙宽度(Eg)约为1.0 e V。经热电性能测试分析,在717 K时Cu Ga3Te5的ZT值达... 详细信息

采用放电等离子烧结法(SPS)制备了三元缺陷化合物Cu Ga3Te5热电半导体,并分析研究了其结构和热电性能。XRD分析结果表明,该半导体为单相化合物Cu Ga3Te5,直接带隙宽度(Eg)约为1.0 e V。经热电性能测试分析,在717 K时Cu Ga3Te5的ZT值达到最大值0.3。

关键词：热电性能缺陷化合物 CuGa3Te5

梯度金属陶瓷(TiC)_pNi与Ti燃烧扩散连接界面组织及力学性能

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稀有金属材料与工程 2013年第2期42卷 302-306页

作者：陈少平董凤孟庆森樊文浩太原理工大学山西太原030024

采用MA-FAPAS工艺,借助中间层TiAl的燃烧反应放热,原位合成了梯度金属陶瓷(TiC)pNi和金属间化合物TiAl,并同步完成了(TiC)pNi/TiAl/Ti的扩散连接,研究了在外加温度场、电场和应力场耦合作用下连接结构的形成机制。利用FE-SEM、TEM和XRD... 详细信息

采用MA-FAPAS工艺,借助中间层TiAl的燃烧反应放热,原位合成了梯度金属陶瓷(TiC)pNi和金属间化合物TiAl,并同步完成了(TiC)pNi/TiAl/Ti的扩散连接,研究了在外加温度场、电场和应力场耦合作用下连接结构的形成机制。利用FE-SEM、TEM和XRD等手段对各层及连接界面的微观结构和相组成,以及电场作用下各连接界面元素扩散特征进行分析;采用显微硬度压痕法对连接界面的韧性进行分析;采用剪切法、冷淬法和有限元法对界面结合强度和残余应力分布进行分析计算。结果表明,各燃烧层均发生充分反应并形成了良好的冶金结合,连接界面处存在强烈的元素交互扩散;连接界面具有较强的抗剥离和抗剪切强度,(TiC)PNi/TiAl界面为接头的薄弱环节。

关键词：梯度材料原位合成金属陶瓷扩散连接力学性能

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中铬奥氏体合金抗冲击磨损堆焊材料

焊接学报 1998年第4期 42-48页

作者： meng qingsen,Liu Mancai,Yin Sheng yi (Taiyuan University of Technology) Yao Quanfu (Pingshuo Coal Industry Co.)

针对高应力磨粒磨损工况条件研制的中铬ＣＣｒＭｏ系奥氏体合金堆焊材料ＦＡＷ焊条，具有焊接工艺性好、堆焊金属抗裂性好和加工硬化率高的特点，是替代奥氏体锰钢的理想焊接材料。通过对该材料的硬化和磨损性能及其机理的试验研究... 详细信息

针对高应力磨粒磨损工况条件研制的中铬ＣＣｒＭｏ系奥氏体合金堆焊材料ＦＡＷ焊条，具有焊接工艺性好、堆焊金属抗裂性好和加工硬化率高的特点，是替代奥氏体锰钢的理想焊接材料。通过对该材料的硬化和磨损性能及其机理的试验研究，探讨了合金的冷作硬化及冲击磨损的一般规律。硬化机制以形变强化与碳化物析出强化为主，磨损形式以塑性凿削式去除为主。

关键词：冲击磨粒磨损堆焊奥氏体合金