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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]. 　

There are some viscoelastic constitutive model for filled rubber-like materials [12].
Journal of Macromolecular Science(Part B), Vol. 48 (2009), p. 1241-1251
Journal of Applied Polymer Science, Vol. 113(2009), p.1355–1363
Journal of Applied Polymer Science, Vol. 128 (2013), p. 2255-2261
Polymer materials science & engineering, Vol. 33(2017), p. 29-34 [9] G.X.

Formability of aluminium alloy sheets, ASME DC Journal of Engg Material
Institute of Production Technologies, Department of Forming, Faculty of Materials Science and Technology
[7] STNEN ISO 12004-2 (2008) Metallic materials.
[8] Jieshi Chen and Xianbin Zhou,(2005) A new curve fitting for forming limit experimental data Journal of Material Science Technology, Vol. 2
[9] Pepelnjak T, Kuzman, K. ,(2007), Numerical determination of the forming limit diagrams, Journal of Achievements in Materials and Manufacturing Engineering, Vol. 20

Pullar, Hexagonal ferrites: A review of the synthesis, properties and applications of hexaferrite ceramics, Progress in Materials Science 57 (2012) 1191–1334 [3] R.
Wrona, Structure and properties of barium ferrite powders prepared by milling and annealing, Archives of Materials Science and Engineering, Volume 28 Issue 12 December (2007) Pages 735-742
Salem, Features of Crystal Structure and Magnetic Properties of M-type Ba-hexaferrites with Diamagnetic Substitution, International Journal of Materials Chemistry and Physics Vol. 1, No. 3, (2015), pp. 286-294
Green Magnetic properties of cobalt substituted M-type Barium hexaferrite prepared by co-precipitation, Journal of Magnetism and Magnetic Materials 312 (2007) 418–429 [10] Philip Shepherd, Kajal K.
Green, Magnetic and structural properties of M-type barium hexaferrite prepared by co-precipitation, Journal of Magnetism and Magnetic Materials 311 (2007) 683–692

Choa 1f 1 Functional Nanostructured Materials Lab., Hanyang University, Ansan 426-791, Korea 2 Nanomaterials Application Division, KICET, Seoul, 153-801, Korea 3 Dept., Electronic Materials Engineering, Chonbuk National University, jeonju 561-756, Korea 4 Dept., Advanced Materials Science & Engineering, Mokpo National University, Muan 534-729, Korea a fnsm41@empal.com, bykjeong@kicet.re.kr, cksoh@kicet.re.kr,d kimbh@moak.chonbuk.ac.kr, e shlee@mokpo.ac.kr, f choa15@hanyang.ac.kr Keywords: Hydroxyapatite, Tri-calcium Phosphate, Spray Pyrolysis, Thermal stability Abstract.
Materials Science Letters Vol. 16 (1997) 1267 [4] R.
Materials Science Vol. 8 (1997), p. 511 [5] S.
Lenggoro etc.: Journal of Materials Science Vol. 32 (1997), p. 1229 [7] M.
Vol. 23 (2003), p. 1687 [11] Sang-Hoon Rhee: Biomaterials Vol. 23 (2002), p. 1147 [12] Qunhui Sun, Yulin Deng: Journal of Colloid and Interface Science.

Materials The studied concrete mixtures are summarized in table 1.
Decomposition of this waste material would take dozens of years, so it belongs to pollution materials.
International Journal of polymer analysis and characterization.
Journal of Thermal Envelope and Building Science 2004, Vol. 27, pp 307-325
Journal of Thermal Envelope and Building Science. 1999, Vol. 22, pp 349-355

Materials and methods 2.1.
Reviews on Advanced Materials Science. 2012;30(2):166-74
Journal of Applied Polymer Science. 1997;66(4):741-8
Materials Science and Technology Vii. 2013;545:57-62
Journal of Membrane Science. 2012;403:32-40

The equation is standardized by the solid modulus Es of corrugated sandwich materials.
The experiments of the Forest Products Laboratory explored the experimental methods of cushioning materials.
Compressive behaviour of corrugated board panels, Journal of Composite Materials, 35(2001)2098-2126
Study of Environmental Protection Packaging Materials for Transportation, Master Paper: Southern Yangtze University, Wuxi, 2003 (in Chinese)
Enhancement of cushioning performance with paperboard crumple inserts, Journal of Packaging Technology and Science, 18(2005) 273-278

Dzenis, Material science: Spinning continuous fibers for nanotechnology.
Journal of Membrane Science. 281 (2006) 581-586
Journal of Materials Science. 2 (1967) 474-488
International Journal of Nonlinear Sciences and Numerical Simulation. 5 (2004) 253-262
International Journal of Nonlinear Sciences and Numerical Simulation. 5 (2004) 5-8

Fig. 1 EDM process Materials used Work piece material The work piece material used for the experiment is AISI D3 steel of size 50 mm×40 mm×10 mm.
Singh, Effect of Pulse on/Pulse off Time on Machining of AISI D3 Die Steel using copper and Brass Electrode in EDM, International Journal of Engineering and Science. 1 (2012) 19-22
Senthilvelan, Effect of Electrode Materials on Electric Discharge Machining of 316 L and 17-4 PH Stainless Steels, Journal of Minerals and Materials Characterization and Engineering. 11 (2012) 685-690
Lebrun, Influence of EDM pulse energy on the surface integrity of martensitic steels, Journal of Materials Processing Technology. 84 (1998) 90–96
Sehgalb, V.S Sharma, Cryogenic treatment of tool materials: a review, Mater Manuf Process. 25 (2010) 1077–1100