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Stabilization of hexavalent chromium with pretreatment and high temperature sintering in highly contaminated

Haiyan Mou, Wenchao Liu, Lili Zhao, Wenqing Chen, Tianqi Ao

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1353-7

Abstract: Abstract • Separate reduction and sintering cannot be effective for Cr stabilization. • Combined treatmentof reduction and sintering is effective for Cr stabilization. • Almost all the Cr in the reduced soilis residual form after sintering at 1000°C.This study explored the effectiveness and mechanisms of high temperature sintering following pre-reductionWhen FeSO4 or C6H8O7 reduction was followed by sintering at 1000°C, the Cr leaching was reduced enough

Keywords： Chromium     Heavy contaminated soil     Reduction     Sintering     Stabilization     Speciation    

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Two-dimensional modeling of sintering of a powder layer on top of nonporous substrate

Tiebing CHEN, Yuwen ZHANG,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 2,   Pages 143-148 doi: 10.1007/s11465-010-0006-0

Abstract: Selective laser sintering (SLS) of a two-component metal powder layer on the top of multiple sinteredloose powder layer with different numbers of the existing sintered metal powder layers below on the sintering

Keywords： laser     sintering     melting     solidification     heat transfer    

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Fabrication of form stable NaCl-Al2O3 composite for thermal energy storage by cold sintering process

Bilyaminu Suleiman, Qinghua Yu, Yulong Ding, Yongliang Li

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4,   Pages 727-735 doi: 10.1007/s11705-019-1823-2

Abstract: (50-50 wt-%) composite material for high temperature thermal energy storage was fabricated by cold sinteringOverall, cold sintering process has the potential to be an efficient, safe and cost-effective strategy

Keywords： cold sintering process     composite fabrication     thermal energy storage     phase change materials    

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Current understanding and applications of the cold sintering process

Tong Yu, Jiang Cheng, Lu Li, Benshuang Sun, Xujin Bao, Hongtao Zhang

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4,   Pages 654-664 doi: 10.1007/s11705-019-1832-1

Abstract: In traditional ceramic processing techniques, high sintering temperature is necessary to achieve fullyTo overcome these drawbacks, a novel processing technique called “cold sintering process (CSP)” has beenIn CSP, the processing conditions including aqueous solution, pressure, temperature, and sintering duration

Keywords： cold sintering process     processing variables     solid-state rechargeable batteries    

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Laser sintering of Cu nanoparticles on PET polymer substrate for printed electronics at different wavelengths

Juan Carlos HERNANDEZ-CASTANEDA, Boon Keng LOK, Hongyu ZHENG

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2,   Pages 303-318 doi: 10.1007/s11465-019-0562-x

Abstract: Optimal parameters for sintering the Cu NPs are identified for each laser system, which targets low resistivityFinally, the quality of the sintered tracks is quantified, and the laser sintering mechanisms observedPractical considerations are discussed to improve the laser sintering process of Cu NPs.

Keywords： laser sintering     copper nanoparticles     printed electronics    

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Development of lunar regolith composite and structure via laser-assisted sintering

Frontiers of Mechanical Engineering doi: 10.1007/s11465-021-0662-2

Abstract: MPa, and the maximum depth of surface variation is 120.79 μm, which indicates poor powder fusion and sintering

Keywords： in situ manufacturing     laser-assisted powder fusion process     mechanical properties     topological structure design    

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Preparation and microstructure analysis of Fe-doped PbTiO ceramic

QIANG Liangsheng, MA Jing, CHU Jia, ZHANG Xiaohong

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 2,   Pages 140-144 doi: 10.1007/s11705-008-0021-4

Abstract: PbTiO (PT) powder and bulk materials were prepared successfully by sol-gel technique and a subsequent sintering

Keywords： homogeneous     Thermogravimetry/differential thermal     tightness     oxygenolysis     sintering process    

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Strengthening mechanisms in carbon nanotube reinforced bioglass composites

Jing ZHANG, Chengchang JIA, Zhizhong JIA, Jillian LADEGARD, Yanhong GU, Junhui NIE

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 2,   Pages 126-131 doi: 10.1007/s11705-012-1279-0

Abstract: Carbon nanotube reinforced bioglass composites have been successfully synthesized by two comparative sinteringtechniques, i.e., spark plasma sintering (SPS) and conventional compaction and sinteirng.improved mechanical properties, with SPS technique substantially better than conventional compact and sintering

Keywords： 45S5Bioglass     multi-wall carbon nanotubes     biocomposite     mechanical properties     sintering    

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Bimetallic Ni-Fe catalysts derived from layered double hydroxides for CO methanation from syngas

Honggui Tang, Shuangshuang Li, Dandan Gong, Yi Guan, Yuan Liu

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 4,   Pages 613-623 doi: 10.1007/s11705-017-1664-9

Abstract: Carbon deposition and sintering of active components such as nano particles are great challenges forIn stability test, the Ni2Fe-red catalyst exhibits great improvement in both anti-sintering and resistanceinteraction between Ni and Fe element in alloy and surface distribution of Fe element not only inhibits the sintering

Keywords： methanation     layered double hydroxide     bimetal Ni-Fe alloy     sintering     carbon deposition    

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A novel approach to preparing ultra-lightweight ceramsite with a large amount of fly ash

Sen Liu, Congren Yang, Wei Liu, Longsheng Yi, Wenqing Qin

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 4, doi: 10.1007/s11783-020-1241-1

Abstract: ratio of fly ash:kaolin:diatomite= 80:15:5, preheating temperature of 800°C, preheating time of 5 min, sinteringtemperature of 1220°C, and sintering time of 10 min.a liquid-phase component on the surface, and generation of a gas phase inside ceramsite during the sintering

Keywords： Fly ash     Ultra-lightweight ceramsite     Expansion mechanism     Sintering process    

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Properties of Ag-doped Bi-Sb alloys as thermoelectric conversion materials for solid state refrigeration

Wen XU, Laifeng LI, Rongjin HUANG, Min ZHOU, Liyun ZHENG, Linghui GONG, Chunmei SONG

Frontiers in Energy 2009, Volume 3, Issue 1,   Pages 90-93 doi: 10.1007/s11708-009-0005-1

Abstract: The energy conversion properties of Bi-Sb system thermoelectric materials doped by Ag was investigated. Bi Sb Ag ( =0, 1, 2, 3, 4) alloys with Ag substitution for Sb were synthesized by mechanical alloying and then pressed under 5 GPa at 523 K for 30 min. The phase structure of the alloys was characterized by X-ray diffraction. The electric conductivities and the seebeck coefficients were measured at the temperature range of 80-300 K. The results reveal that the electric conductivities of the Ag-doped Bi-Sb alloys are highly improved. The power factor of Bi Sb Ag reaches a maximum value of 2.98×10 W/(K ?m) at 255 K, which is about three times that of the un-doped sample Bi Sb at the same temperature.

Keywords： thermoelectric conversion materials     high-pressure sintering     thermoelectric properties    

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Tubes with coated and sintered porous surface for highly efficient heat exchangers

Hong Xu, Yulin Dai, Honghai Cao, Jinglei Liu, Li Zhang, Mingjie Xu, Jun Cao, Peng Xu, Jianshu Liu

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 3,   Pages 367-375 doi: 10.1007/s11705-018-1703-1

Abstract:

Surface modification is a direct and effective way to enhance the efficiency of heat exchangers. Surface modification by forming a microporous coated layer can greatly enhance the boiling heat transfer and thus achieve a high performance. In this paper, we systematically investigate the boiling behavior on a plain surface with/without sintered microporous coatings of copper powder. The results demonstrated that the sintered surface has a better performance in nucleate boiling due to the increased nucleation sites. The superheat degree is lower and the bubble departure diameter is larger for the sintered surface than for the plain surface, so the heat can be carried away more efficiently on the sintered surface. In addition, the heat transfer capacity on the sintered surface depends on both the powder size and the coating thickness for a high flux tube. The optimum heat transfer capacity can be obtained when the thickness of the microporous coating layer is 3–5 times of the sintered powder diameter. As a result, the heat transfer coefficient tube can be up to 3 times higher for the tube with a sintered surface than that with a plain surface, showing a pronounced enhancement in heat transfer and a high potential in chemical engineering industry application.

Keywords： microporous coating layer     surface modification     boiling enhancement     sintering    

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Multi-objective particle swarm cooperative optimization algorithm for state parameters

Ding Lei,Wu Min,She Jinhua,Duan Ping

Strategic Study of CAE 2010, Volume 12, Issue 2,   Pages 101-107

Abstract: strong nonlinear and complex computing of synthetic permeability and burn-through point in the lead-zinc sintering

Keywords： lead-zinc sintering process     synthetic permeability     burn-through point     multi-objective particle swarm    

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Title Author Date Type Operation

Stabilization of hexavalent chromium with pretreatment and high temperature sintering in highly contaminated

Haiyan Mou, Wenchao Liu, Lili Zhao, Wenqing Chen, Tianqi Ao

Journal Article

Two-dimensional modeling of sintering of a powder layer on top of nonporous substrate

Tiebing CHEN, Yuwen ZHANG,

Journal Article

Fabrication of form stable NaCl-Al2O3 composite for thermal energy storage by cold sintering process

Bilyaminu Suleiman, Qinghua Yu, Yulong Ding, Yongliang Li

Journal Article

Current understanding and applications of the cold sintering process

Tong Yu, Jiang Cheng, Lu Li, Benshuang Sun, Xujin Bao, Hongtao Zhang

Journal Article

Laser sintering of Cu nanoparticles on PET polymer substrate for printed electronics at different wavelengths

Juan Carlos HERNANDEZ-CASTANEDA, Boon Keng LOK, Hongyu ZHENG

Journal Article

Development of lunar regolith composite and structure via laser-assisted sintering

Journal Article

Preparation and microstructure analysis of Fe-doped PbTiO ceramic

QIANG Liangsheng, MA Jing, CHU Jia, ZHANG Xiaohong

Journal Article

Strengthening mechanisms in carbon nanotube reinforced bioglass composites

Jing ZHANG, Chengchang JIA, Zhizhong JIA, Jillian LADEGARD, Yanhong GU, Junhui NIE

Journal Article

Bimetallic Ni-Fe catalysts derived from layered double hydroxides for CO methanation from syngas

Honggui Tang, Shuangshuang Li, Dandan Gong, Yi Guan, Yuan Liu

Journal Article

A novel approach to preparing ultra-lightweight ceramsite with a large amount of fly ash

Sen Liu, Congren Yang, Wei Liu, Longsheng Yi, Wenqing Qin

Journal Article

Properties of Ag-doped Bi-Sb alloys as thermoelectric conversion materials for solid state refrigeration

Wen XU, Laifeng LI, Rongjin HUANG, Min ZHOU, Liyun ZHENG, Linghui GONG, Chunmei SONG

Journal Article

Tubes with coated and sintered porous surface for highly efficient heat exchangers

Hong Xu, Yulin Dai, Honghai Cao, Jinglei Liu, Li Zhang, Mingjie Xu, Jun Cao, Peng Xu, Jianshu Liu

Journal Article

Multi-objective particle swarm cooperative optimization algorithm for state parameters

Ding Lei,Wu Min,She Jinhua,Duan Ping

Journal Article