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Online since: December 2015
Authors: Zhi Jie Li, Bo Li, Xia Xiang, Shi Fa Wang
FeMnO3 is a well-known ferrimagnet material, and exhibit a phase transitions with TN ≈ 40 K [1].
Generally, there are two different methods in order to obtain a low thermal expansion of multifunctional material: (1) prepare monolithic material with very low coefficient of thermal expansion (CTE), (2) design a material with a low CTE by combining phases with negative and positive CTE [9,10].
Therefore, by calculating the CTE of the FeMnO3 ceramics, this stuy provides evidence to design a material with a very low CTE.
Acknowledgments This work was supported by the Joint Fund of the National Natural Science Foundation of China and the China Academy of Engineering Physics (Grant No. 11076008) and by the National Natural Science Foundation of China (61178018, 51202024) and by the Ph.D.
Zu, A comparative study of ZnAl2O4 nanoparticles synthesized from different aluminum salts for use as fluorescence materials, Sci.
Generally, there are two different methods in order to obtain a low thermal expansion of multifunctional material: (1) prepare monolithic material with very low coefficient of thermal expansion (CTE), (2) design a material with a low CTE by combining phases with negative and positive CTE [9,10].
Therefore, by calculating the CTE of the FeMnO3 ceramics, this stuy provides evidence to design a material with a very low CTE.
Acknowledgments This work was supported by the Joint Fund of the National Natural Science Foundation of China and the China Academy of Engineering Physics (Grant No. 11076008) and by the National Natural Science Foundation of China (61178018, 51202024) and by the Ph.D.
Zu, A comparative study of ZnAl2O4 nanoparticles synthesized from different aluminum salts for use as fluorescence materials, Sci.
Online since: January 2010
Authors: Pedro R. Goulart, J.E. Spinelli, F. Bertelli, Wislei R.R. Osório, Noé Cheung, Amauri Garcia
Cheung e and A.Garcia f
Department of Materials Engineering, Federal University of Rio Grande do Norte - UFRN
PO Box 1524, 59072-970, Lagoa Nova Campus, Natal, RN, Brazil
a
pedrogoulart1951@yahoo.com.br, b
spinelli@fem.unicamp.br, c
febermat@yahoo.com.br,
d
wislei@fem.unicamp.br, e
cheung@fem.unicamp.br, f
amaurig@fem.unicamp.br
Keywords: Mechanical properties, Al-Fe alloy, Cellular microstructure.
Rooy, in: Metals Handbook, Vol. 15, ASM International, Materials Park, Ohio (1988), p. 743 [11] P.
Turmezey: Key Eng.
Vol. 439 (2007), p. 114 [20] ASTM E 8M - Standard Test Methods for Tension Testing of Metallic Materials.
American Society of Testing and Materials, (1995) [21] C.J.Simensen, A.I.
Rooy, in: Metals Handbook, Vol. 15, ASM International, Materials Park, Ohio (1988), p. 743 [11] P.
Turmezey: Key Eng.
Vol. 439 (2007), p. 114 [20] ASTM E 8M - Standard Test Methods for Tension Testing of Metallic Materials.
American Society of Testing and Materials, (1995) [21] C.J.Simensen, A.I.
Online since: January 2014
Authors: El Hadi Benyoussef, Rahma Bessah
In fact the reductions of water and energy consumptions are key elements in a process development for their economical and environmental impacts [2-4].
If F (Kg/h), represents the mass of plant material processed per hour of extraction, a solid waste of approximately the same mass will be generated.
This shows that the combustion of plant material waste generated by an essential oil extraction process is able to provide the necessary heat process.
Considered mobile unit and its autonomy of energy and water consumption, it is possible to process directly the plant material on the culture fields, thus avoiding its transport and storage.
Its physics, engineering, use, environmental impacts, economy and planning aspects, 3rd Ed., Elsevier Science, (2004) [31] Information on http://www.tecsol.fr/spv/pv_isole.htm
If F (Kg/h), represents the mass of plant material processed per hour of extraction, a solid waste of approximately the same mass will be generated.
This shows that the combustion of plant material waste generated by an essential oil extraction process is able to provide the necessary heat process.
Considered mobile unit and its autonomy of energy and water consumption, it is possible to process directly the plant material on the culture fields, thus avoiding its transport and storage.
Its physics, engineering, use, environmental impacts, economy and planning aspects, 3rd Ed., Elsevier Science, (2004) [31] Information on http://www.tecsol.fr/spv/pv_isole.htm
Online since: April 2021
Authors: Bijayani Panda, D.M. Shivanna, A.D. Vishwanatha
Corrosion Behaviour of In Situ AlxNiy Reinforced AA6061 Composite
Vishwanatha A.D.1,a, Shivanna D.M.1,b and Bijayani Panda1,c*
1Department of Mechanical Engineering, CMR Institute of Technology, Bengaluru, India
avishwanantha.d@cmrit.ac.in, bshivanna.d@cmrit.ac.in, cbijayani.p@cmrit.ac.in
Keywords: AA6061; AMC; stir-casting; porosity; density; hardness; microscopy; potentiodyanamic polarization
Abstract.
The high hardness of Al3Ni intermetallic (675 HV) makes it an ideal reinforcement material [26].
Kumar, Development of novel stir cast aluminium composite with modified coconut shell ash filler, Materials Today: Proceedings 22 (2020) 2715–2724
Mahapatra, The key attributes of synthesizing ceramic particulate reinforced Al-based matrixcomposites through stir casting process: a review.
Li, In-situ Al/Al3Ni functionally graded materials by electromagnetic separation method, Mater.
The high hardness of Al3Ni intermetallic (675 HV) makes it an ideal reinforcement material [26].
Kumar, Development of novel stir cast aluminium composite with modified coconut shell ash filler, Materials Today: Proceedings 22 (2020) 2715–2724
Mahapatra, The key attributes of synthesizing ceramic particulate reinforced Al-based matrixcomposites through stir casting process: a review.
Li, In-situ Al/Al3Ni functionally graded materials by electromagnetic separation method, Mater.
Online since: February 2011
Authors: Hong Mei Wang, Yuan Lian, Li Xia Yuan
Influence of Mn Doping on the Microstructure and Optical Properties of Zns Nanocrystals
Hongmei Wang 1, a* , Yuan Lian 1,b, Lixia Yuan 1,c
1 Department of Biological and Chemical Engineering, Jiaxing University, Jiaxing 314001, China
ahongmei256@163.com, bhnlianyuan@126.com, cyuangg@sina.com
Keywords: Mn2+-doped ZnS; Chemical method; X-ray diffraction; Photoluminescence
Abstract: ZnS nanoparticles with Mn2+ doping (0–2.5%) were prepared through a simple chemical method.
Among the semiconductor nanocrystals under study, zinc sulfide is chemically more stable and technologically better than other semiconductor materials, so it is considered to be a promising host material.
Mn2+ doped ZnS materials have been studied as far back as two decades ago.
Experimental 2.1 Materials All chemicals used were of analytical grade.
Acknowledgements The authors acknowledge the support of the jiaxing science and technology projects (No. 2009AY2062) and the key research project of jiaxing University (No. 70108006).
Among the semiconductor nanocrystals under study, zinc sulfide is chemically more stable and technologically better than other semiconductor materials, so it is considered to be a promising host material.
Mn2+ doped ZnS materials have been studied as far back as two decades ago.
Experimental 2.1 Materials All chemicals used were of analytical grade.
Acknowledgements The authors acknowledge the support of the jiaxing science and technology projects (No. 2009AY2062) and the key research project of jiaxing University (No. 70108006).
Online since: January 2013
Authors: Na Liu, Ti Chang Sun, Jue Kou, Ya Na Ji, Yan Xu, Yu Xia Wei, Man Jiang
At present, there are major problems on the supply of niobium raw material, over 90% of the raw material supply is separated from pyrochlore ore, besides niobite, Ti-Nb-Ta concentrate and Nb-Ta-Fe ore [2].
Experimental Experimental materials.
The powdery mixed materials were 100% the raw ore sample, 30% reductant and 10% flux agent(CaO), and then were loaded into the SiC crucible.
Zhong: Mining and Metallurgical Engineering, No.2 (1997), p.46-49.
Zhang: Journal of Hazardous Materials, Vol.185, (2011), p.1405-1411
Experimental Experimental materials.
The powdery mixed materials were 100% the raw ore sample, 30% reductant and 10% flux agent(CaO), and then were loaded into the SiC crucible.
Zhong: Mining and Metallurgical Engineering, No.2 (1997), p.46-49.
Zhang: Journal of Hazardous Materials, Vol.185, (2011), p.1405-1411
Online since: June 2010
Authors: Feng Yu Li, Xiao Mei Sun, Bu Hai Li
The removal of heavy metals from aqueous solution by utilizing modified
β-cyclodextrin microspheres
Fengyu Li 1,a, Xiaomei Sun2,b
, Buhai Li2,c
1
School of environment and civil engineering,Wuhan Institute of Technoloy,
Wuhan 430073, P R.
China 2 Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074 ,P R China a lfy5@sina.com, b sunxm311@yahoo.com.cn, clibuhai1946@163.com Keywords: β-Cyclodextrin; Modification; heavy metal; Adsorption Abstract Batch adsorption experiments were carried out to remove heavy metals Cu(II)and Ni(II) by pyromellitic dianhydride (PMDA) grafted β-Cyclodextrin (β-CD).
A large number of materials have been synthesized to remove metal ions from wastewater.
There are abundant functional hydroxyls outside the cavity which can be modify and synthesize more useful materials. β-Cyclodextrin(β-CD) and its derivatives have been widely used in the removal of organic pollutants[8-10].
Experimental Materials The β-CD microspheres and PMDA-modified β-CD microspheres were prepared in the same methods as describled elsewhere [14].
China 2 Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074 ,P R China a lfy5@sina.com, b sunxm311@yahoo.com.cn, clibuhai1946@163.com Keywords: β-Cyclodextrin; Modification; heavy metal; Adsorption Abstract Batch adsorption experiments were carried out to remove heavy metals Cu(II)and Ni(II) by pyromellitic dianhydride (PMDA) grafted β-Cyclodextrin (β-CD).
A large number of materials have been synthesized to remove metal ions from wastewater.
There are abundant functional hydroxyls outside the cavity which can be modify and synthesize more useful materials. β-Cyclodextrin(β-CD) and its derivatives have been widely used in the removal of organic pollutants[8-10].
Experimental Materials The β-CD microspheres and PMDA-modified β-CD microspheres were prepared in the same methods as describled elsewhere [14].
Online since: June 2014
Authors: You Wei Yan, Yang Mou, Li Hong Xue, Cai Xuan Lu, Qi Lai Zhou
Effect of strain on microstructures and mechanical properties of warmly deformed SCRAM steel for fusion application
Yang Mou, Lihong Xue*, Qilai Zhou, Caixuan Lu, Youwei Yan
State Key Laboratory of Mould Technology, Institute of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
*Corresponding author: Tel.: +86 2787558290
Fax: +86 2787541922
E-mail address: xuelh@mail.hust.edu.cn (L.
Introduction Reduced-activation ferritic/martensitic (RAFM) steels are currently considered as one of the realistic structural materials for fusion blanket systems owing to their excellent resistance to radiation-induced swelling and thermo-mechanical properties[1~2].
Neutron irradiation will create large amounts of helium atoms in nuclear reaction and their precipitation into bubbles can substantially deteriorate mechanical properties of the materials.
Sakasegawa, et al., Technical Issues Related to the Development of Reduced-activation Ferritic/Martensitic Steels as Structural Materials for a Fusion Blanket System [J].
Introduction Reduced-activation ferritic/martensitic (RAFM) steels are currently considered as one of the realistic structural materials for fusion blanket systems owing to their excellent resistance to radiation-induced swelling and thermo-mechanical properties[1~2].
Neutron irradiation will create large amounts of helium atoms in nuclear reaction and their precipitation into bubbles can substantially deteriorate mechanical properties of the materials.
Sakasegawa, et al., Technical Issues Related to the Development of Reduced-activation Ferritic/Martensitic Steels as Structural Materials for a Fusion Blanket System [J].
Online since: August 2009
Authors: S.J. Li, K.C. Tzeng, C.Y. Chiu, C.Y. Liao, J.J. Hsu, Z.P. Lin, Kuo Shan Yao, Ta Chih Cheng, Chen Yu Chang
Institute of Materials Science and System Engineering, MingDao University, Changhua, Taiwan
3.
Semiconductor nanoparticles (quantum dots) used as labeling materials for biomarkers have obtained much attention recently.
Meanwhile, fluorescent latex particles (polystyrene particles) have been widely used as labeling materials in life science.
Bacterial spot is a key factor for bacterial diseases occurring in Solanaceae plant around the world [8-10].
Materials and methods Fluorescent silica nanoparticles synthesis.
Semiconductor nanoparticles (quantum dots) used as labeling materials for biomarkers have obtained much attention recently.
Meanwhile, fluorescent latex particles (polystyrene particles) have been widely used as labeling materials in life science.
Bacterial spot is a key factor for bacterial diseases occurring in Solanaceae plant around the world [8-10].
Materials and methods Fluorescent silica nanoparticles synthesis.
Online since: February 2006
Authors: Ja Myeong Koo, Seung Boo Jung
Interfacial Reaction and Bump Shear Property of Electroplated Sn-37Pb
Solder Bump with Ni Under Bump Metallization during Multiple Reflows
Ja-Myeong Kooa and Seung-Boo Jungb
School of Advanced Materials Science and Engineering, Sungkyunkwan University,
300 Cheoncheon-dong, Jangan-gu, Suwon 440-746, Korea
a
Iam@MrKoo.com, bsbjung@skku.ac.kr
Keywords: Sn-Pb (tin-lead) solder, intermetallic compound (IMC), multiple reflows, ball shear test,
flip chip, electroplating, Ni under bump metallization (Ni UBM).
The formation of a thin IMC layer between the molten solder and substrate during reflow is essential to the bondability of these two materials, while the excessive formation of the IMC at the interface weakens the solder joints [5].
The metallurgical and mechanical properties of the flip-chip packages significantly depend on the UBM as well as the solder bump material.
The mismatch of elastic moduli between the two dissimilar materials being joined generally induces stress concentrations and stress discontinuities at the interface during shear [10].
Jung: Key Eng Mat, Vo. 297-300 (2005), p. 801
The formation of a thin IMC layer between the molten solder and substrate during reflow is essential to the bondability of these two materials, while the excessive formation of the IMC at the interface weakens the solder joints [5].
The metallurgical and mechanical properties of the flip-chip packages significantly depend on the UBM as well as the solder bump material.
The mismatch of elastic moduli between the two dissimilar materials being joined generally induces stress concentrations and stress discontinuities at the interface during shear [10].
Jung: Key Eng Mat, Vo. 297-300 (2005), p. 801