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Online since: September 2013
Authors: Mahadevan Venkatraman, K. Pavitra, Vijaya Jana, Tohfiq Kachwala
Since the technology to produce high strength steels through rolling process is well advanced, it’s also possible to take advantage of this technology to redesign the alloying of stainless steels to leaner chemistry for achieving the properties.
Top 10 Stainless Steel Markets Metallurgy of stainless steel Broadly, stainless steels are ferritic, austenitic, martensitic, and duplex depending on chemistry and process route.
This Schaeffler diagram is especially suited to weld metals in order to predict the structure.
Although the formation of sigma phase is sluggish, cold working enhances the precipitation rate considerably, and sigma phase has even been found in the air-cooled, as-cast structures in very high chromium content alloys [30].
[25] D.H.Lister, Thermal Power plants, Vol II Nuclear reactor materials and Chemistry [26] L.
Top 10 Stainless Steel Markets Metallurgy of stainless steel Broadly, stainless steels are ferritic, austenitic, martensitic, and duplex depending on chemistry and process route.
This Schaeffler diagram is especially suited to weld metals in order to predict the structure.
Although the formation of sigma phase is sluggish, cold working enhances the precipitation rate considerably, and sigma phase has even been found in the air-cooled, as-cast structures in very high chromium content alloys [30].
[25] D.H.Lister, Thermal Power plants, Vol II Nuclear reactor materials and Chemistry [26] L.
Online since: November 2013
Authors: Sittiporn Punyanitya, Surasak Watanesk, Ruangsri Watanesk, Anucha Racksanti, Sorapong Janhom
Crosslinking Density of Silk Fibroin – Rice Starch Hydrogels Modified with Trisodium Trimetaphosphate
Anucha Racksanti1,a, Sorapong Janhom1,b, Sittiporn Punyanitya2,c,
Ruangsri Watanesk1,d and Surasak Watanesk1,e*
1Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
2Department of Surgery, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
aanucha_ist@hotmail.com, bsorapongj@gmail.com,
cpunyanitya@hotmail.com, druangsri@gmail.com, e*swatanes@gmail.com,
Keywords: crosslinking density, silk fibroin, rice starch, hydrogels, trisodium trimetaphosphate
Abstract.
Chemical structures of SF, RS and STMP are shown in Fig. 1.
(a) (b) (c) Fig. 1 Chemical structures of (a) SF, (b) RS and (c) STMP [3,1,6].
Acknowledgments Financial support from the Center of Excellence for Innovation in Chemistry (PERCH-CIC), Office of the Higher Education Commission (OHEC), Ministry of Education, Thailand, is gratefully acknowledged.
Barbarossou, Nuclear magnetic resonance (NMR) spectroscopy: basic principles and phenomena, and their applications to chemistry, biology and medicine, Chem.
Chemical structures of SF, RS and STMP are shown in Fig. 1.
(a) (b) (c) Fig. 1 Chemical structures of (a) SF, (b) RS and (c) STMP [3,1,6].
Acknowledgments Financial support from the Center of Excellence for Innovation in Chemistry (PERCH-CIC), Office of the Higher Education Commission (OHEC), Ministry of Education, Thailand, is gratefully acknowledged.
Barbarossou, Nuclear magnetic resonance (NMR) spectroscopy: basic principles and phenomena, and their applications to chemistry, biology and medicine, Chem.
Online since: March 2004
Authors: Hirohisa Sato, G. Chen, Hiromi Nakano, Naoki Kamegashira
Kamegashira
2
1
Dept. of Applied Chemistry, School of Sciences, Harbin Institute of Technology,
92 West Dazhi Street, Harbin, 150001, P.
Therefore, it is derived that Eu2Mn2/3Nb4/3O7 phase has not a pyrochlore structure but has a zirconolite-type structure (pyrochlore-related structure) with a C2/c space group.
It was viewed that HRTEM image of a characteristic twin structure in Eu2Mn2/3Nb4/3O7 which a zirconolite-type structure has.
This structure is a pyrochlore-related structure with zirconolite-type, but not a pyrochlore structure.
The twinned structure formed a lamellar domain structure, which was caused by a stacking disorder along the c* direction.
Therefore, it is derived that Eu2Mn2/3Nb4/3O7 phase has not a pyrochlore structure but has a zirconolite-type structure (pyrochlore-related structure) with a C2/c space group.
It was viewed that HRTEM image of a characteristic twin structure in Eu2Mn2/3Nb4/3O7 which a zirconolite-type structure has.
This structure is a pyrochlore-related structure with zirconolite-type, but not a pyrochlore structure.
The twinned structure formed a lamellar domain structure, which was caused by a stacking disorder along the c* direction.
Online since: January 2012
Authors: Stefano Amadori, Ilaria Cappelloni, Roberto Montanari, E. Bonetti
Details about its complex hierarchical structure can be found in [2-5].
Such treatment induces a complete dehydratation and damages the collagen structure.
At the lowest temperatures examined here ice can assume also an amorphous structure.
Kuhs, in: Physics and Chemistry of Ice, W.
Kuhs (Eds.), Royal Society of Chemistry, Cambridge, 2007, pp 201-208
Such treatment induces a complete dehydratation and damages the collagen structure.
At the lowest temperatures examined here ice can assume also an amorphous structure.
Kuhs, in: Physics and Chemistry of Ice, W.
Kuhs (Eds.), Royal Society of Chemistry, Cambridge, 2007, pp 201-208
Online since: October 2007
Authors: Haruyuki Inui, Kyosuke Kishida, Katsushi Tanaka, Shunta Harada
The affordability of the crystal structures for the wide
range of metal/silicon ratios stems from the fact that the crystal structures can be stabilized by
introducing favorable crystal lattice defects.
Results and Discussion Defect structures of ReSi1.75.
The chimney-ladder structure can be generally described as a subcell structure composed of n M subcells and m X subcells stacking along the c-axis with the c-axis dimensions of cM and cX, respectively [7,11,12].
When the valence electron number is larger, the Si vacancy concentration decreases with the appearance of shear structure on (107) while the Si vacancy concentration increases with the appearance of shear structure on (‾109) when the valence electron number is smaller
Nowotny, in: The Chemistry of Extended Defects in Non-Metallic Solids, edited by E.R.
Results and Discussion Defect structures of ReSi1.75.
The chimney-ladder structure can be generally described as a subcell structure composed of n M subcells and m X subcells stacking along the c-axis with the c-axis dimensions of cM and cX, respectively [7,11,12].
When the valence electron number is larger, the Si vacancy concentration decreases with the appearance of shear structure on (107) while the Si vacancy concentration increases with the appearance of shear structure on (‾109) when the valence electron number is smaller
Nowotny, in: The Chemistry of Extended Defects in Non-Metallic Solids, edited by E.R.
Online since: February 2017
The conference was organized by the Department of Materials Science and Engineering, Faculty of
Engineering,"Dunărea de Jos" University of Galati, under the patronage of the Romanian Academy
of Technical Sciences and the Romanian Chemistry Society, with the participation of Professor
Rodrigo Martins, former president of the European Materials Research Society and present day
president of the E-MRS Senate.
The papers in the first section - Advanced Materials and Technologies in Industrial Production - address the topics of metals and alloys, composite materials and structures, surface processes and surface characterization, mathematical modeling of materials processing and materials properties.
Those in the second section - Nanotechnologies and Functional Materials- address focus on thin films for electronic applications, nanofluids, photocatalitic and antimicrobial nanoparticles, protective composite coatings and submicronic structured shape memory alloys.
The papers in the first section - Advanced Materials and Technologies in Industrial Production - address the topics of metals and alloys, composite materials and structures, surface processes and surface characterization, mathematical modeling of materials processing and materials properties.
Those in the second section - Nanotechnologies and Functional Materials- address focus on thin films for electronic applications, nanofluids, photocatalitic and antimicrobial nanoparticles, protective composite coatings and submicronic structured shape memory alloys.
Online since: June 2010
Authors: Pyrgiotakis Georgios, Sigmund M. Wolfgang
Results
Structural Characteristics and Surface Chemistry: Figure 2 shows the XRD spectra of the lANTs
and s-ANTs.
Therefore, it is necessary to consider the internal structure of the nanotubes.
The 284.6 eV is the peak that is being attributed primarily to the elemental carbon secondarily to the graphite structure.
Disdier, et al.: Nouveau Journal De Chimie-New Journal of Chemistry, Vol. 6 (1982), p. 559-564. 8.
Pichat: Journal of Photochemistry and Photobiology a-Chemistry, Vol. 59 (1991), p. 181-189. 11.
Therefore, it is necessary to consider the internal structure of the nanotubes.
The 284.6 eV is the peak that is being attributed primarily to the elemental carbon secondarily to the graphite structure.
Disdier, et al.: Nouveau Journal De Chimie-New Journal of Chemistry, Vol. 6 (1982), p. 559-564. 8.
Pichat: Journal of Photochemistry and Photobiology a-Chemistry, Vol. 59 (1991), p. 181-189. 11.
Online since: April 2021
Authors: Samer H. Zyoud, Atef Abdelkader, Ahed H. Zyoud, Araa Mebdir Holi
"Liquid Crystals in Analytical Chemistry: A Review."
Critical reviews in analytical chemistry 49, no. 3: 243-255, 2019
Chemistry of materials 14, no. 2: 629-635
"Low voltage control of exchange coupling in a ferromagnet-semiconductor quantum well hybrid structure."
"Low voltage control of exchange coupling in a ferromagnet-semiconductor quantum well hybrid structure."
Critical reviews in analytical chemistry 49, no. 3: 243-255, 2019
Chemistry of materials 14, no. 2: 629-635
"Low voltage control of exchange coupling in a ferromagnet-semiconductor quantum well hybrid structure."
"Low voltage control of exchange coupling in a ferromagnet-semiconductor quantum well hybrid structure."
Online since: March 2007
Authors: Chang Woo Kim, Young Soo Kang
Preparation of Hard Phase Nd-Fe-B Nanoparticles
by Coprecipitation Method
Chang Woo Kim and Young Soo Kanga
Department of Chemistry, Pukyong National University, 599-1 Daeyeon-3-dong,
Nam-gu, Pusan, 608-737, Korea
a
yskang@pknu.ac.kr
Keywords: Nd-Fe-B Nanoparticles, Coprecipitation
Abstract.
The crystal structure of the synthesized nanoparticles was identified with X-ray powder diffraction (XRD).
Concentration is drawn to the production of Nd-Fe-B powders by rapid solidification techniques, which enable to produce materials having nanocrystalline structures.
High magnetic properties of the rapidly solidified Nd-Fe-B powders can be attributed to the excellent intrinsic properties of the Nd-Fe-B phase and nanocrystalline structure.
In the present work, a study of phase composition and structure parameters affected on the magnetic properties of Nd-Fe-B nanocomposite was carried out.
The crystal structure of the synthesized nanoparticles was identified with X-ray powder diffraction (XRD).
Concentration is drawn to the production of Nd-Fe-B powders by rapid solidification techniques, which enable to produce materials having nanocrystalline structures.
High magnetic properties of the rapidly solidified Nd-Fe-B powders can be attributed to the excellent intrinsic properties of the Nd-Fe-B phase and nanocrystalline structure.
In the present work, a study of phase composition and structure parameters affected on the magnetic properties of Nd-Fe-B nanocomposite was carried out.
Online since: December 2013
Authors: Jian Jian Wang, Wei Quan Shao, Chao Wang, Hong Liang Li, Shan Dong Li, Jie Xu, Zhen Wang, Shaou Chen
China
2 Key Laboratory of Photonics Materials and Technology in University of Shandong,
Qingdao University, Qingdao 266071, China
3 Laboratory of New Fiber Materials and Modern Textile, Growing Basis for State Key Laboratory, College of Chemistry, Chemical Engineering and Environment, Qingdao University, Qingdao 266071, China.
Fourier transformed infrared spectroscopy (FTIR, PerkinElmer Horiba F730) was applied to investigate different crystallographic structure (space group) of LiNi0.5Mn1.5O4.
All samples exhibit perfect cubic spinel structure (JCPDS#80-2162) with typical intensive peaks, such as (1 1 1), (3 1 1), (4 4 0).
A higher band intensity of 619 rather than 588 cm-1 is referred to the crystallographic structure of Fd-3m[10,11].
When calcining at 700℃ for 10h ,the synthesized product had cubic spinel structure , the intensity of the impurities peak was the weakest and the powder size was the minimum.
Fourier transformed infrared spectroscopy (FTIR, PerkinElmer Horiba F730) was applied to investigate different crystallographic structure (space group) of LiNi0.5Mn1.5O4.
All samples exhibit perfect cubic spinel structure (JCPDS#80-2162) with typical intensive peaks, such as (1 1 1), (3 1 1), (4 4 0).
A higher band intensity of 619 rather than 588 cm-1 is referred to the crystallographic structure of Fd-3m[10,11].
When calcining at 700℃ for 10h ,the synthesized product had cubic spinel structure , the intensity of the impurities peak was the weakest and the powder size was the minimum.