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Online since: November 2005
Authors: John G. Speer, David K. Matlock, W.A. Al Shalfan
They showed that if the alloy chemistry is
highly stabilized (high Ti/C or Nb/C ratios), higher annealing temperatures are required to achieve
the desired solute carbon levels and baking response.
Therefore, the precipitate chemistry is considered useful in providing information about the precipitation or dissolution behavior during annealing in the ferrite region, to help in the interpretation of internal friction data.
This should include detailed STEM investigation involving comparison of the complete precipitate chemistries for particles found in specimens annealed for shorter times on the order of 1 minute, with specimens annealed for longer times on the order of 1 hour.
This effect has not been reported before and may be attributed to greater distortion of the bcc structure caused by the higher carbon supersaturation.
Therefore, the precipitate chemistry is considered useful in providing information about the precipitation or dissolution behavior during annealing in the ferrite region, to help in the interpretation of internal friction data.
This should include detailed STEM investigation involving comparison of the complete precipitate chemistries for particles found in specimens annealed for shorter times on the order of 1 minute, with specimens annealed for longer times on the order of 1 hour.
This effect has not been reported before and may be attributed to greater distortion of the bcc structure caused by the higher carbon supersaturation.
Online since: January 2021
Authors: Abdelkader Hima, Larbi Haddad, Belkhir Dadamoussa, Asma Messai Aoun
Thermo-Kinetic Study of Adsorption of Methylene Blue in Aqueous Solutions Using Algerian Illite Natural and Activated Mineral Clay
LARBI Haddad1,a*, ABDELKADER Hima2,b, BELKHIR Dadamoussa3,c
and ASMA Messai Aoun4,d
1Department of Chemistry, Faculty of Exact Sciences, University of El Oued, Algeria
2Department of Electrical Engineering, Faculty of Technology, University of El Oued, Algeria
3University of Ghardaia, Faculty of Sciences & Technology, Algeria
4Department of Biology, Faculty of Natural and Life Sciences, University of El Oued, Algeria
haddadlarbi82@outlook.fr
Keywords: illite; mineral clay; adsorption; methylene blue; water treatment; environment.
The affinities between the textile and the dyes vary according to the chemical structure of the dyes and the type of fibers to which they are applied.
Zhang, Materials Chemistry and Physics, Modified bentonite adsorption of organic pollutants of dye wastewater, 202 (2017) 266-276
Ndungu, Frontiers in chemistry, Enhanced As (III) and As (V) adsorption from aqueous solution by a clay based hybrid sorbent, 7 (2019)
The affinities between the textile and the dyes vary according to the chemical structure of the dyes and the type of fibers to which they are applied.
Zhang, Materials Chemistry and Physics, Modified bentonite adsorption of organic pollutants of dye wastewater, 202 (2017) 266-276
Ndungu, Frontiers in chemistry, Enhanced As (III) and As (V) adsorption from aqueous solution by a clay based hybrid sorbent, 7 (2019)
Online since: January 2011
Authors: J. Gandhi Rajan, R Sathya, R. Nagarathnam, A. Xavier
GandhiRajan2, R.Nagarathnam1
1Post Graduate and Research Department of Chemistry, The Madura College (Autonomous), Madurai-625 011, Tamil Nadu, India
2 Post Graduate Department of Chemistry, Vivekananda College (Autonomous), Chennai, Tamil Nadu, India.
Activated carbon is the most widely used adsorbent for this purpose because of its extended surface area, micro-porous structure, high adsorption capacity and high degree of surface reactivity.
Nagarathnam., HOD of Chemistry, The Madura College, Madurai, India for his timely help and encouragement.
Activated carbon is the most widely used adsorbent for this purpose because of its extended surface area, micro-porous structure, high adsorption capacity and high degree of surface reactivity.
Nagarathnam., HOD of Chemistry, The Madura College, Madurai, India for his timely help and encouragement.
Online since: November 2015
Authors: Elena Scutelnicu, Danuţ Mihailescu, Marius Corneliu Gheonea
Important conclusions related to the influence of the wire type on the concentrations of CO and microparticles produced during the MAG-M welding process have been drawn and some recommendations useful for the producers of welded structures are provided at the end of the paper.
IN CONCLUSION, LOW FUME METAL POWDER CORED WIRE (M4) DEPOSITED WITH LOW FEED SPEED SHOULD BE RECOMMENDED AS THE SAFEST WELDING VARIANT FOR THE WELDER'S HEALTH AND ENVIRONMENT PROTECTION WHEN MAG-M (CORGON 18) WELDING PROCESS IS APPLIED FOR THE ACHIEVEMENT OF WELDED STRUCTURES.
Gomes, Fume emissions during Gas Metal Arc Welding, Toxicological & Environmental Chemistry. 88, 3 (2006) 385-394
Pîrvulescu, Contributions regarding the impact of a welded structures producer on the environment, PhD Thesis, "Politehnica" University of Bucharest, 2010
IN CONCLUSION, LOW FUME METAL POWDER CORED WIRE (M4) DEPOSITED WITH LOW FEED SPEED SHOULD BE RECOMMENDED AS THE SAFEST WELDING VARIANT FOR THE WELDER'S HEALTH AND ENVIRONMENT PROTECTION WHEN MAG-M (CORGON 18) WELDING PROCESS IS APPLIED FOR THE ACHIEVEMENT OF WELDED STRUCTURES.
Gomes, Fume emissions during Gas Metal Arc Welding, Toxicological & Environmental Chemistry. 88, 3 (2006) 385-394
Pîrvulescu, Contributions regarding the impact of a welded structures producer on the environment, PhD Thesis, "Politehnica" University of Bucharest, 2010
Online since: June 2014
Authors: Jun Chen Zou, Xiao Yan Liu, Xin Ying Zhang, Li Fei Dong, Wen Bo Chai
The modified IIR structures were characterized by using scanning electron microscopy (SEM) and contact angle analysis (CA).
The nano graphite powder (99%), with thickness of 40nm, was purchased from Aladdin Chemistry Co.
Cryogel prepared using different modifiers exhibited interconnected porous network structure on their fracture surfaces.
The structure of gels was formed at temperatures below zero.
The nano graphite powder (99%), with thickness of 40nm, was purchased from Aladdin Chemistry Co.
Cryogel prepared using different modifiers exhibited interconnected porous network structure on their fracture surfaces.
The structure of gels was formed at temperatures below zero.
Online since: October 2010
Authors: Fei Long, Zheng Guang Zou, Yuan Chun Liu
The results demonstrated that the powders maintain double cavity chain structure regardless of
the chromium doping.
The structure of pure V6O13 comprises edge- and corner-sharing VO6 octahedra arranged in alternating single and double layers with corner sharing between the layers, in space group C2/m with the unit-cell dimensions a = 11.922 Å, b = 3.680 Å, c = 10.138 Å, and β= 100.88°, V=0.444784 nm3.
So after entering substituted positions, it won't make too much of the material structure of distortion.
Ian Hill: Power Sources Vol. 136(2004), p. 290-295 [12] WEI Yuanxun, Mo Tianlin, XU Wuizheng, ZHANG Xihui, XU Jie, GU Qingchao: Journal of Inorganic Chemistry Vol. 8(1992), p. 34-37 [13] XU Canyang, PANG Mingjie, YUAN Chenguang, CHE Zhigang, PAN yi: Journal of Materials Science & Engineering Vol. 24(2006), p. 252-254 [14] Marphy D W, Christian P A, Disalvo F J, Carides J N.
The structure of pure V6O13 comprises edge- and corner-sharing VO6 octahedra arranged in alternating single and double layers with corner sharing between the layers, in space group C2/m with the unit-cell dimensions a = 11.922 Å, b = 3.680 Å, c = 10.138 Å, and β= 100.88°, V=0.444784 nm3.
So after entering substituted positions, it won't make too much of the material structure of distortion.
Ian Hill: Power Sources Vol. 136(2004), p. 290-295 [12] WEI Yuanxun, Mo Tianlin, XU Wuizheng, ZHANG Xihui, XU Jie, GU Qingchao: Journal of Inorganic Chemistry Vol. 8(1992), p. 34-37 [13] XU Canyang, PANG Mingjie, YUAN Chenguang, CHE Zhigang, PAN yi: Journal of Materials Science & Engineering Vol. 24(2006), p. 252-254 [14] Marphy D W, Christian P A, Disalvo F J, Carides J N.
Online since: April 2015
Authors: Xin Yu Xu, Zheng Long Zhou
Morphology and Mechanical Properties of Ternary Polymer Blends Containing Liquid Crystalline Ionomers with Different Ionic Group
Xinyu Xu*, Zhenglong Zhou
Department of Polymer Materials and Engineering, School of Chemistry and Materials Science, Liaoning Shihua University, Fushun, Liaoning 113001, P.
The morphological structure and mechanical properties of the blends were investigated by scanning electron microscopy (SEM).
The structure of side-chain liquid crystalline ionomers.
When excess SLCI was added, the inhomogeneity of the structure caused the elongation at break to decrease.
The morphological structure and mechanical properties of the blends were investigated by scanning electron microscopy (SEM).
The structure of side-chain liquid crystalline ionomers.
When excess SLCI was added, the inhomogeneity of the structure caused the elongation at break to decrease.
Online since: January 2014
Authors: Xiao Zhen Liu, Xiao Zhou Liu, Jie Chen, Guang Jian Lu, Han Zhang Xiao
The structure of the SnO2 particles and Pr doped SnO2 particles are investigated respectively by XRD analysis.
The structure of the SnO2 particles and Pr doped SnO2 particles were studied respectively with X-ray diffraction.
According to Fig. 1, the diffraction peaks in the XRD spectrum of Pr doped SnO2 conductive particles can be recognized as the characteristic ones of SnO2 which demonstrates that the sample has a structure of tetragonal rutile.
Schleich and M.Danot: Journal of Solid State Chemistry Vol. 177 (2014), p. 4332
The structure of the SnO2 particles and Pr doped SnO2 particles were studied respectively with X-ray diffraction.
According to Fig. 1, the diffraction peaks in the XRD spectrum of Pr doped SnO2 conductive particles can be recognized as the characteristic ones of SnO2 which demonstrates that the sample has a structure of tetragonal rutile.
Schleich and M.Danot: Journal of Solid State Chemistry Vol. 177 (2014), p. 4332
Online since: February 2021
Authors: Buthainah A. Ibrahim, Ziad T. Khodiar, Marwan M. Farhan
XRD results showed that the film was polycrystalline with cubic structure having preferred orientation (111).
During the bleaching process the ions introduced into the film cause a change in the Fermi level due to the accumulation of electrons in the lower band that changes the structure of the electronic band of Co3O4 and thus change the visual behaviour of the film from bleaching to colouring [12].
Conclusions · XRD results showed that the film was polycrystalline with cubic structure with preferred orientation (111)
[14] NF Habubi, BA Abrahim, ES Noore, Influence of Irradiation on some Optical Properties of (CdO) Thin Films Prepared by Spray Pyrolysis, International Letters of Chemistry, Physics and Astronomy 74(2017) 15-21.
During the bleaching process the ions introduced into the film cause a change in the Fermi level due to the accumulation of electrons in the lower band that changes the structure of the electronic band of Co3O4 and thus change the visual behaviour of the film from bleaching to colouring [12].
Conclusions · XRD results showed that the film was polycrystalline with cubic structure with preferred orientation (111)
[14] NF Habubi, BA Abrahim, ES Noore, Influence of Irradiation on some Optical Properties of (CdO) Thin Films Prepared by Spray Pyrolysis, International Letters of Chemistry, Physics and Astronomy 74(2017) 15-21.
Online since: November 2013
Authors: Sandip V. Bhatt, M.P. Deshpande, Nitya Garg, Bindiya H. Soni, Sunil Chaki
The XRD and SEM measurements confirmed that the thin films grown by this technique have good crystalline cubic structures and homogeneous surfaces.
From the Raman spectra as shown in figure 2 (b), a peak at 215 cm-1 is attributed to the fundamental longitudinal optical phonon (LO) mode of rock-salt structure and those at 433 cm-1 and 636 cm-1 to its first and second overtones 2LO and 3LO, respectively.
As the electron-hole pair wave is confined by potential wells of small lateral dimensions, a perturbation of the electron structure of the semiconductor appears and the conduction and valence bands become discrete and the energy gap increases.
Cheetham, The chemistry of nanomaterials5 (12), (2004) 1913-1914
From the Raman spectra as shown in figure 2 (b), a peak at 215 cm-1 is attributed to the fundamental longitudinal optical phonon (LO) mode of rock-salt structure and those at 433 cm-1 and 636 cm-1 to its first and second overtones 2LO and 3LO, respectively.
As the electron-hole pair wave is confined by potential wells of small lateral dimensions, a perturbation of the electron structure of the semiconductor appears and the conduction and valence bands become discrete and the energy gap increases.
Cheetham, The chemistry of nanomaterials5 (12), (2004) 1913-1914