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In this study, it is discussed the microstructures for obtaining either exchange coupling or magnetostatic coupling in real materials.
Thus, the problem is not exactly materials property, but fundamentally cost of the alloy and cost of production.
These materials need to be nanocrystalline with single domain particle size or less for maximization of magnetic properties.
Vos: Journal Applied Physics S Vol. 31 (1960), p. 75
[13] M.F. de Campos: Materials Science Forum Vols. 775-776 (2014), p. 437

In recent years, due to advances in science technology, space satellites have made progress.
It is because that some materials on the surface of the rotor and stator are vapored out and the frictional force increased.
Fig. 5 Lining materials.
Fig. 6 Durability of motor with lining materials.
Table 2 Rotation speed in vacuum each lining materials [rpm] Table 3 Torque in vacuum each lining materials [mNm]. 　

Deineka, Technology оf Safe Galvanochemical Process оf Strong Platings Forming Using Ternary Alloy, Materials Science Forum, 1006 (2020) 233–238
Trefilova, Spectral and kinetic characteristics of the luminescence center in LiF-WO3 and ZnWO4 crystals, IOP Conference Series: Materials Science and Engineering, 81/1 (2015). 012024
Yushin, Li-ion battery materials: present and future, Materials Today, 18/5 (2015) 252–264
Hovalenkov, Experimental Study of the Insulating Properties of a Lightweight Material Based on Fast-Hardening Highly Resistant Foams in Relation to Vapors of Toxic Organic Fluids, Materials Science Forum, 1038 (2021) 374–382
Bezuglov, Mathematical modeling of fire-proof efficiency of coatings based on silicate composition, Materials Science Forum, 1006 (2020) 70–75

Experimental set-up Materials.
The materials used in the experiments are listed in table 1.
Journal of Composite Materials.
Journal of Cellulose Science and Technology.
Beijing: Science Press, 2007.

First, the raw materials for CaCO3, CuO and TiO2 were prepared and weight according to the stoichiometric ratio for undoped CCTO.
The raw materials were then mixed via ball milling process for 1 hour using an alumina jar.
Zirconia balls were used as the grinding media with mass ratio of balls to raw materials of 10: 1.
Ahmad: Microstructure and dielectric properties of CaCu3Ti4O12 ceramic, Materials Letters, 61 (2007) 1835-1838
Gervais: Grain size effects on the dielectric constant of CaCu3Ti4O12 ceramics, Materials Science and Engineering: B, 129 (2006) 135-138.

Electrochemical reaction occurring in the SOFC cathode is the reduction of oxygen, therefore cathode materials for SOFC have to posses many properties.
The-state-of-the-art cathode material, LSM-ScSZ composite material was used to investigate cathode degradation.
Acknowledgements This work was financially supported by the Natural Science Foundation of Jilin Province (201215109), International cooperation project of Jilin Provincial Science and Technology Department (20130413047GH), the Research Funds of Industrial Technology Research and Development Projects of Jilin Province(JF2012C024; JF2013C050-1), and the Science and Technology Research Projects of Education Department of Jilin Province(2013269), to which we gratefully acknowledged.
Mogensen.Journal of power sources, 61(173), (1996), P.71-78
[J].Journal of Power Sources, 55(73), (1995), P. 89-96

Benefits and Opportunities of Reusing Waste Rotor Blades Materials from a Life Cycle Perspective Angela Daniela La Rosaa*, Stergios Goutianosb Department of Manufacturing and Civil Engineering, Norwegian University of Science and Technology, Teknologivegen 22, 2815 Gjøvik, Norway aangela.d.l.rosa@ntnu.no; bstergios.goutianos@ntnu.no *corresponding author Keywords: LCA, recyclable thermoset composites, GFRP and FFRP, eco-design.
Unlike many of other widely used materials particularly metals, wood, and concrete recycling and reusing of GFRP waste is more difficult and expensive.
Chemical treatment for materials recycling was considered as possible end of life treatment of wind blades.
Pickering, Recycling technologies for thermoset composite materials—current status, Composites Part A: Applied Science and Manufacturing, Volume 37, Issue 8, (2006) 1206-1215. https://doi.org/10.1016/j.compositesa.2005.05.030
Materials, 11 (2018) 353

The different effect of chemical activators on mechanical properties and microstructure of cement-base repair materials were investigated.
To meet the strength require of the repair cement based materials, some methods must be tried to activate the potential reactivity of natural pozzolan.
In previous literatures [6-8], it has been found that the addition of proper activators can obviously increase the strength of cement based materials.
Experimental procedure Materials.
Milestone: submitted to Journal of Construction and Building Materials (2011) [3] Caijun Shi, Robert L.

Archives of Metallurgy and Materials.
Archives of Metallurgy and Materials.
[6] S.Scheriau, M.Kriegisch, S.Kleber, N.Mehboob, R.Grossinger, R.Pippan, Magnetic characteristics of HPT deformed soft-magnetic materials, Journal of Magnetism and Magnetic Materials 322 (2010) 2984–2988
Alexandrov, Bulk nanostructured materials from severe plastic deformation, Progress in Materials Science 45 (2000) 103±189
Materials Science and Engineering A 434 (2006) 88-94.

The material of the workpiece is gray cast iron, and the hardness is 180HBW.
,:Journal of manufacturing processes Vol. 3(2001), p. 1-16
M: Journal of Computing and Information Science in Engineering Vol.6(2006), p.33-39
L: The International Journal of Advanced Manufacturing Technology Vol. 42(2009), p. 233-241
P: Journal of Tsinghua University (Science and Technology) Vol. 48(2008), p. 165-168, in Chinese.