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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

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 1,   Pages 71-74 doi: 10.1007/s11465-014-0291-0

Abstract: Applications like solid oxide fuel cells and sensors increasingly demand the possibility to braze ceramics to metalsCommonly used silver based active filler metals cannot fulfill these requirements, if application temperaturesAs 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 modificationof standard nickel based filler metals were necessary to meet the requirements of above mentioned applications

Keywords： wide gap     active brazing     nickel filler metals     high temperature application     WC     Al2O3   

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Phenolic rigid organic filler/isotactic polypropylene composites. III. Impact resistance property

Heming LIN, Dongming QI, Jian HAN, Zhiqi CAI, Minghua WU

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 2,   Pages 176-181 doi: 10.1007/s11705-009-0203-8

Abstract: A novel phenolic rigid organic filler (KT) was used to modify isotactic polypropylene (iPP).was found that the brittle-ductile transition (BDT) of the PP/KT microcomposites took place at the fillercontent of about 4%, and the impact strength attains the maximum at 5% (with filler particles size ofIt was the filler particles that induced the plastic deformation of interparticles ligament and henceIt can be concluded that aside from the interparticle distance, the filler particles size also plays

Keywords： rigid organic filler     polypropylene     impact resistance    

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Dispersion of a novel phenolic rigid organic filler in isotactic polypropylene matrix by solution-mixing

Dongming QI, Xiaoli ZHAO, Zhijie CHEN, Peng HUANG, Jun CAO

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 4,   Pages 395-402 doi: 10.1007/s11705-012-1269-2

Abstract: A novel phenolic rigid organic filler (named KD) with a high melting point was dispersed in an isotacticInfluences of MAPP and mixing methods on the filler dispersion were studied using polaried optical microscopeThe filler particles are always inclined to form large irregular aggregates in the iPP matrix due toHowever, an iPP/MAPP/KD (PMK) blend containing filler particles with a quasi-spherical shape (~97.8 nm

Keywords： dispersion     rigid organic filler     isotactic polypropylene     mixing    

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Influence of the filler materials on flux-free brazing of pure aluminium (1050)

Kirsten BOBZIN, Lidong ZHAO, Thomas SCHLAEFER, Thomas WARDA,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 1,   Pages 47-51 doi: 10.1007/s11465-009-0079-9

Abstract: In the present study, samples of pure aluminium (1050) were deposited by cold spraying with filler materialssuch as Al12Si, Al7Si, Al12Si-4%Cu, and the Al-Si-based filler material A, which was especially developedThe results show that the filler materials could be well deposited by cold spraying.The samples deposited with other filler materials could be brazed without fluxes.The joints of the samples deposited with the filler material showed the highest shear strength of 41&

Keywords： aluminium     flux-free brazing     cold spraying     shear strength    

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Activated carbon induced oxygen vacancies-engineered nickel ferrite with enhanced conductivity for supercapacitor

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 2088-2100 doi: 10.1007/s11705-023-2352-6

Abstract: Activated carbon induced oxygen vacancies-engineered nickel ferrite with enhanced conductivity for supercapacitor

Keywords： nickel ferrite conductivity     carbon oxygen vacancies    

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Phenolic rigid organic filler/isotactic polypropylene composites. I. Preparation

QI Dongming, YANG Lei, WU Minghua, LIN Heming, NITTA Kohhei

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 3,   Pages 236-241 doi: 10.1007/s11705-008-0034-z

Abstract: A novel phenolic rigid organic filler (KT) was melt-mixed with an isotactic polypropylene (iPP) to prepareThe evolution of filler morphology during melt-mixing and melt-pressure processes was monitored by scanningThe influences of shear force, pressure time, filler content and MAPP concentration on the final fillerWe found that this rigid organic filler readily melted and dispersed homogenously into the iPP matrixDuring the melt-pressure process, parts of the filler particles combined gradually through a coalescence

Keywords： morphology     concentration     tendency     controllable     addition    

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Phenolic rigid organic filler/isotactic polypropylene composites. II. Tensile properties

QI Dongming, SHAO Jianzhong, WU Minghua, NITTA Kohhei

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 4,   Pages 396-401 doi: 10.1007/s11705-008-0077-1

Abstract: A novel phenolic rigid organic filler (KT) was used to modify isotactic polypropylene (iPP).We found that the Young’s modulus of PP/KT specimens increased with filler content, while the yield andbreak of the specimens are related to the filler particles size.ultimate elongation of PP/KT specimens were close to those of unfilled iPP specimens when the maximal fillerm at 200 mm/min, close to that of glass bead but far more than those of other rigid inorganic filler

Keywords： maximal     uniaxial tensile     unfilled     excellent tensile     influence    

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Enabling nickel ferrocyanide nanoparticles for high-performance ammonium ion storage

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 2,   Pages 226-235 doi: 10.1007/s11705-022-2198-3

Abstract: Prussian blue and its analogs are extensively investigated as a cathode for ammonium-ion batteries. However, they often suffer from poor electronic conductivity. Here, we report a Ni2Fe(CN)6/multiwalled carbon nanotube composite electrode material, which is prepared using a simple coprecipitation approach. The obtained material consists of nanoparticles with sizes 30–50 nm and the multiwalled carbon nanotube embedded in it. The existence of multiwalled carbon nanotube ensures that the Ni2Fe(CN)6/multiwalled carbon nanotube composite shows excellent electrochemical performance, achieving a discharge capacity of 55.1 mAh·g–1 at 1 C and 43.2 mAh·g–1 even at 15 C. An increase in the ammonium-ion diffusion coefficient and ionic/electron conductivity based on kinetic investigations accounts for their high performance. Furthermore, detailed ex situ characterizations demonstrate that Ni2Fe(CN)6/multiwalled carbon nanotube composite offers three advantages: negligible lattice expansion during cycling, stable structure, and the reversible redox couple. Therefore, the Ni2Fe(CN)6/multiwalled carbon nanotube composite presents a long cycling life and high rate capacity. Finally, our study reports a desirable material for ammonium-ion batteries and provides a practical approach for improving the electrochemical performance of Prussian blue and its analogs.

Keywords： nickel ferrocyanides     NH4+     electrochemistry     Prussian blue     aqueous ammonium ion    

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Molybdenum disulfide@nickel phyllosilicate hybrid for improving the flame retardancy and wear resistance

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 2114-2126 doi: 10.1007/s11705-023-2357-1

Abstract: In this study, nickel phyllosilicate was synthesized based on molybdenum disulfide (MoS2@NiPS

Keywords： molybdenum disulfide     nickel phyllosilicate     epoxy resin     flame retardancy    

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Nickel-based metal−organic framework-derived whisker-shaped nickel phyllosilicate toward efficiently

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 10,   Pages 1493-1504 doi: 10.1007/s11705-022-2168-9

Abstract: In this work, the rod-like nickel-based metal−organic frameworks were first synthesized and subsequentlyemployed as the hard templates and nickel sources to prepare the whisker-shaped nickel phyllosilicateThen, the nickel phyllosilicate whiskers were evaluated to enhance the mechanical, thermal, flammableThe results show that adequate nickel phyllosilicate whiskers can disperse well in the matrix, improvingAlthough the addition of nickel phyllosilicate whiskers could not obtain any UL-94 ratings, it enhanced

Keywords： metal−organic framework     nickel phyllosilicate     whisker     epoxy resin     mechanical response     tribological    

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Tool wear mechanisms in the machining of Nickel based super-alloys: A review

Waseem AKHTAR,Jianfei SUN,Pengfei SUN,Wuyi CHEN,Zawar SALEEM

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 2,   Pages 106-119 doi: 10.1007/s11465-014-0301-2

Abstract:

Nickel based super-alloys are widely employed in aircraft engines and gas turbines due to their highThis study provides a detailed review of the tool wear mechanism in the machining of nickel based super-alloys

Keywords： tool wear     nickel based super-alloy     wear mechanism    

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Self-sacrificial templating synthesis of flower-like nickel phyllosilicates and its application as high-performance

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 4,   Pages 484-497 doi: 10.1007/s11705-021-2074-6

Abstract: The nanocomposites of flower-like nickel phyllosilicate particles incorporated into epoxy resin wereThe flower-like nickel phyllosilicate particles were firstly synthesized using a mild self-sacrificialIt was demonstrated that adequate flower-like nickel phyllosilicate particles dispersed well in the matrixNevertheless, the incorporated flower-like nickel phyllosilicate particles resulted in the continuously

Keywords： nickel phyllosilicate     flow-like structure     mechanical property     thermal stability     tribological performance    

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ASSESSMENT OF HEAVY METALS IN HYDROCHAR PRODUCED BY HYDROTHERMAL CARBONIZATION OF DAIRY MANURE

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 3,   Pages 437-447 doi: 10.15302/J-FASE-2023507

Abstract:

● Content of heavy metals in hydrochar varies considerably, from 50%

Keywords： heavy metals     dairy manure     hydrochar     hydrothermal carbonization     waste management    

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Field evidence of decreased extractability of copper and nickel added to soils in 6-year field experiments

Bao Jiang, Dechun Su, Xiaoqing Wang, Jifang Liu, Yibing Ma

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 2, doi: 10.1007/s11783-017-0990-y

Abstract: The phytotoxicity of added copper (Cu) and nickel (Ni) is influenced by soil properties and field aging

Keywords： Copper     Nickel     EDTA     Sequential extraction    

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Sulfidation/regeneration multicycle testing of nickel-modified ZnFe

Wei LI, Jinju GUO, Jiejie HUANG, Jiaotao ZHAO

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 435-440 doi: 10.1007/s11705-010-0506-9

Abstract: In this paper, the sulfur capacity and multiple cycles of a nickel-modified ZnFe O sorbent preparedThe results indicate that the nickel-modified ZnFe O keeps high reactivity and structural stability

Keywords： hot gas desulphurization     nickel-modified ZnFe2O4     sulfidation/regeneration    

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Title Author Date Type Operation

Wide gap active brazing of ceramic-to-metal-joints for high temperature applications

K. Bobzin,L. Zhao,N. Kopp,S. Samadian Anavar

Journal Article

Phenolic rigid organic filler/isotactic polypropylene composites. III. Impact resistance property

Heming LIN, Dongming QI, Jian HAN, Zhiqi CAI, Minghua WU

Journal Article

Dispersion of a novel phenolic rigid organic filler in isotactic polypropylene matrix by solution-mixing

Dongming QI, Xiaoli ZHAO, Zhijie CHEN, Peng HUANG, Jun CAO

Journal Article

Influence of the filler materials on flux-free brazing of pure aluminium (1050)

Kirsten BOBZIN, Lidong ZHAO, Thomas SCHLAEFER, Thomas WARDA,

Journal Article

Activated carbon induced oxygen vacancies-engineered nickel ferrite with enhanced conductivity for supercapacitor

Journal Article

Phenolic rigid organic filler/isotactic polypropylene composites. I. Preparation

QI Dongming, YANG Lei, WU Minghua, LIN Heming, NITTA Kohhei

Journal Article

Phenolic rigid organic filler/isotactic polypropylene composites. II. Tensile properties

QI Dongming, SHAO Jianzhong, WU Minghua, NITTA Kohhei

Journal Article

Enabling nickel ferrocyanide nanoparticles for high-performance ammonium ion storage

Journal Article

Molybdenum disulfide@nickel phyllosilicate hybrid for improving the flame retardancy and wear resistance

Journal Article

Nickel-based metal−organic framework-derived whisker-shaped nickel phyllosilicate toward efficiently

Journal Article

Tool wear mechanisms in the machining of Nickel based super-alloys: A review

Waseem AKHTAR,Jianfei SUN,Pengfei SUN,Wuyi CHEN,Zawar SALEEM

Journal Article

Self-sacrificial templating synthesis of flower-like nickel phyllosilicates and its application as high-performance

Journal Article

ASSESSMENT OF HEAVY METALS IN HYDROCHAR PRODUCED BY HYDROTHERMAL CARBONIZATION OF DAIRY MANURE

Journal Article

Field evidence of decreased extractability of copper and nickel added to soils in 6-year field experiments

Bao Jiang, Dechun Su, Xiaoqing Wang, Jifang Liu, Yibing Ma

Journal Article

Sulfidation/regeneration multicycle testing of nickel-modified ZnFe

Wei LI, Jinju GUO, Jiejie HUANG, Jiaotao ZHAO

Journal Article