Search results

Preparation and Thermoelectric Properties of Ca3Co4O9 Ceramics with Parallel Sheet Shaped Pores Huadong Wang1,a, Xudong Sun1,b, Xueyong Ding1,c, Mu Zhang1,d, Xiaodong Li1,e, Ji-Guang Li1,2,f, Di Huo1,g, Shaohong Liu1,h 1 Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education) adn School of Materials and Metallurgy, Northeastern University, Shenyang, Liaoning 110004, China 2Advanced Materials Processing Unit, National Institute for Materials Science, Sengen 1-2-1, Tsukuba, Ibaraki 305-0047, Japan awanghuadonglq@126.com, bxdsun@mail.neu.edu.cn, cDingxy@smm.neu.edu.cn, dacmzhang@gmail.com, elixd@atm.neu.edu.cn, flijg@smm.neu.edu.cn, ghuod@smm.neu.edu.cn, hliush@smm.neu.edu.cn Keywords: Ca3Co4O9, porous, sheet shaped pores, thermoelectric property Abstract.
Thermoelectric (TE) materials were considered as the best at converting waste heat to electricity.
With these regards, Co-based oxide materials with layered structures are possible candidates for TE materials[4-6].
Hence, researchers endeavored to find polycrystalline materials with high ZT value.
[4] Siwen Li, Ryoji Funahashi, Ichiro Matsubara, Kazuo Ueno, Hiroyuki Yamada, High temperature thermoelectric properties of oxide Ca9Co12O28, Journal of Materials Chemistry Communication, 9 (1999), 1659-1660 [5] J.G.

Related data show that the main source of TVOC inside the building is building decoration materials, and the release of these materials TVOC generally increases with increasing temperature, so the measured data in higher temperature heating days are high; while the emissions of benzene and TVOC increase with the increasing time of using the building.
Two buildings have been used for 3 years, decoration materials still release VOC, and the types and quantity of decoration materials used in mall buildings are all more than school buildings’ materials.
Acknowledgements This study is supported by the science and technology research and development plan of Qinhuangdao (201302A217).
[2] Ho K F,Lee S C,Tsai W Y: submitted to Journal of Hazardous Materials (2006)
[4] H X LÜ, S WEN, Y L FENG: submitted to Journal of Science of the Total Environment (2006). in Chinese [5] Hong Huang, Bei Wang, Shuncheng Li, Baoqiang Zeng: submitted to Journal of analytical science (2008) in Chinese [6] M Weng, L Z Zhu, K Yang, K Yang, S Chen: submitted to Journal of Environ Monit Assess (2010). in Chinese [7] Thijsse T R, Vanoss RF, Lenschow P: submitted to Journal of JAir Waste Manage Assoc (1999)

One of the processes that allows texturization of materials with great hardness is sinker electro discharge machining.
None of the machining methods, no matter how precise, can produce a completely flat surface in conventional materials.
Salguero, Combined Manufacturing Process of Copper Electrodes for Micro Texturing Applications (AMSME), Materials. 14 (2021)
Maropoulos, EDM electrode manufacture using rapid tooling: A review, Journal of Materials Science. 43 (2008) 2522-2535
Subramanian, Feasibility studies on the production of electro-discharge machining electrodes with rapid prototyping and the electroforming process, Journal of Materials Processing Technology. 90 (1999) 231-237

This technique has been incorporated into a Defence Science and Technology Organisation proprietary crack growth analysis tool based on plasticity-induced crack closure.
Taking into account the elastic-plastic response of the material results in a reduction of the stress near the hole thereby reducing the stress intensity factors calculated.
Budiansky, Journal of Applied Mathematics and Mechanics 1971, 35, 18
Hills, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 1998, 212, 731
Ball, Journal of Aircraft 1990, 27, 358

In comparison with alloy steels they are characterized with low density and relatively low costs of raw materials [1-3].
Unmodified materials on intermetallic phase matrix FeAl show very high corrosion resistance in sulphur environment in temperature from 800 to 900°C and oxidation in temperature higher than 1100°C.
Material for tests Materials for tests were samples prepared from alloy on intermetallic phase matrix Fe-40Al-5Cr-0.2Ti-0.2B after plastic treatment with use of extrusion method.
Formanek, Oxidation models of the growth of corrosion products on the intermetallic coatings strengthened by a fine dispersive Al2O3, Journal of Materials Processing Technology 164 (2005) 935-939
Lalik, Kinetics of corrosion on the intermetallic phase matrix FeAl in high temperature, Journal of Achievements in Materials and Manufacturing Engineering 57 (2013) 7-14.

This typical structure of materials, prepared by mechanical alloying is formed by ductile and hard elements.
Ayres de Campos, Journal of Materials Processing Technology, 92-93 (1999) 395-400
Changui, J. of Magnetism and Magnetic Materials, 312 (2007) 310-313 [12] X.
Materials Science and Engineering, A445-446 (2007) 135-140 [13] F.
Materials Science Forum, 584-586 (2008) 977-981

Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, P.R.
[8] Wu Y., et al., Industrial experiments on desulfurization of flue gases by pulsed corona inducedplasma chemical process, Journal of Electrostatics, 57 (2003), 233–241
[10] Cheng J. et al., Sulfur removal at high temperature during coal combustion in furnaces: a review, Progress in Energy and Combustion Science, 29(2003), 381~405 [11] Wendt J.
O., et. al., A dual-use of DBD plasma for simultaneous NOx and SO2 removal from coal-combustion flue gas, Journal of Hazardous Materials, (2011) 185: 1280~1286) [22] Radoiu M.T., et al., Emission control of SO2 and NOx by irradiation methods, Journal of Hazardous Materials, B97(2003), 145~158 [23] Yu Q., et al., Simultaneous removal of NO and SO2 from dry gas stream using non-thermal plasma, Journal of Environmental Sciences, 19(2007), 1393~1397 [24] Lowke J.J., et al., Theoretical analysis of removal of oxides of sulphur and nitrogen in pulsed operation of electrostatic precipitators, IEEE Trans.
Plasma Process, 32(2012), 969~977 [37] Wang M.Y., et al., Oxidation of gaseous elemental mercury in a high voltage discharge reactor, Journal of Environmental Sciences, 21(2009), 1652~1657 [38] Byun Y., et al., Polarity effect of pulsed corona discharge for the oxidation of gaseous elemental mercury, Chemosphere, 84(2011), 1285~1289 [39] Byun Y., et al., Removal mechanism of elemental mercury by using non-thermal plasma, Chemosphere, 83 (2011), 69~75 [40] Jeong J., et al., Removal of gaseous elemental mercury by dielectric barrier discharge, Chemosphere, 68(2007), 2007~2010 [41] Xu F., et al., Simultaneous oxidation of NO, SO2 and Hg0 from flue gas by pulsed corona discharge, Journal of Environmental Sciences, 21 (2009), 328~332 [42] Liang, X., et al., Mercury and other trace elements removal characteristics of DC and pulse-energized electrostatic precipitator, IEEE Trans.

Application of a Ternary Zn-based Solder Alloy for Joining of AZ31B Magnesium Alloy with Ultrasonic Support Miroslav Jáňa1, a, Milan Turňa2, b, Milan Marônek3, c, Marcel Kuruc4, d, Pavel Bílek5, e 1, 2, 3, 4Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Institute of Production Technologies, Paulínska 16, 917 24 Trnava, Slovak Republic. 5Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Institute of Material Science, Paulínska 16, 917 24 Trnava, Slovak Republic.
In: Journal of Materials Engineering and Performance, Vol. 20, pp. 219-222 [11] MA, L., QIAO, P., LONG, W., HE, D., LI, X., 2012.
In: Journal of Materials Engineering and Performance, Vol. 22, pp. 118-122 [13] CZERWINSKI, F., 2011.
Journal of Materials Science, Vol. 42 Issue 10, p. 3552  [16] SATO, Y.
Journal of Materials Science, Vol. 40 Issue 3, p. 637  [17] SPIGARELLI, S., EVANGELISTA, E., El MEHTEDI, M., BALLONI, L., 2007.

Materials Science and Engineering A, 1995. 197(2): p. 171-179
Materials Science and Engineering, 1996.
Journal of Materials Science, 1998. 33(9): p. 2269-2281
JOM Journal of the Minerals, Metals and Materials Society, 2005. 57(11): p. 36-43
Journal of Materials Processing Technology, 2009. 209(2): p. 1060-1073

Kawka: Journal of Materials Processing Technology Vol. 46 (1994), p. 291 [2] A.E.
Tekkaya: Journal of Materials Processing Technology, Vol. 103 (2000), p. 14 [3] S.C.
Barlat: Journal of Materials Processing Technology, Vol. 111 (2001), p. 170 [5] Y.M.
Li: Journal of Materials Processing Technology, Vol. 201 (2008), p. 385 [6] Y.
Sakurai: International Journal of Mechanical Sciences, Vol. 10 (1968), p. 343