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The reaction order was determined and its apparent activation energy was calculated. 1 Experiment 1.1 Materials and reagents 4,4’- diphenylmethane diisocyanate (MDI, from Yantai Wanhua Polyurethanes Co., Ltd.); Amino terminated polyether with molecular weight of 2000, and degree of functionality 2 (D-2000, from Yangzhou Chenhua Science & Technology Group Co., Ltd.) was vacuum dried at 100℃ for 3hours.
Journal of Polymer Research. 2000, 7(2): 81-90
Polymer Materials Science and Engineering. 2008, 24(7): 1-5(in Chinese)
Journal of East China University of Science and Technology. 2003, 29(5): 480-483(in Chinese)
Chemical Propellants & Polymeric Materials. 2004, 2(3): 32-35(in Chinese)

Preliminary Study of Utilizing Ozone in Treatment of Operationally Exhausted Metalworking Fluids Gerulová Kristína 1,a, Buranská Eva 2,b, Turňová Zuzana 3,c and Fiala Jozef 4,d 1,3,4 Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Institute of Safety and Environmental Engineering, Paulinska 16, 91724 Trnava, Slovak Republic 2 Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Institute of Production Technologies, Paulinska 16, 91724 Trnava, Slovak Republic akristina.gerulova@stuba.sk, beva.buranska@stuba.sk, c zuzana.turnova@stuba.sk, djozef.fiala@stuba.sk, Keywords: ozone, metalworking fluids, treatment Abstract.
In: Journal of Hazardous Materials, 2013. - ISBN 394– 402– p. 244– 245 [4] JAGADEVAN, S., ET ALL.
In: Polish Journal of Environmental Studies Vol. 14, No. 1, 2005. p. 73-7 [8] PONNEKANTI, N., KAUL, S.
In: Journal of Chemical Technology and Biotechnology, No. 81, 2006. p. 1540-1546 [13] DUSEK, L.
Institute of Advanced Manufacturing Sciences, Incorporated Machining Xcellence Division, Cincinnati, Ohio 45216 [17] EKENGREN, Ö., NIEMINEN, I., BERGSTRÖM, R., et all.

No distinct shoulders or secondary peaks, which would indicate the presence of heavily tilted domains, can be found in the HFCVD grown material.
The material produced in our process shows a clean Raman spectrum with sharp lines for cubic silicon carbide.
Komiyama et al., “Stress reduction in epitaxial GaN films on Si using cubic SiC as intermediate layers,” Journal of Applied Physics 100, 033519 (2006) [3] J.
Zhang et al., “Epitaxial monocrystalline SiC films grown on Si by HFCVD at 780°C,” Materials Science and Engineering B75 (2000) 177179 [6] K.
Yasui et al., “LowTemperature Heteroepitaxial Growth of SiC on (100) Si Using Hot-Mesh Chemical Vapor Deposition,” Japanese Journal of Applied Physics Vol. 44, No. 3 (2005), 1361–1364 [7] J.

In the welding process, the materials are welded in three steps in Figure 1.
Muralidhara, (2007), Microstructure and mechanical behaviuor of rotary friction welded titanium alloys, International Journal of Materials and Metallurgical Engineering, vol. 1 (11), pp. 641–643
Experimental Thermal Analysis in Rotary Friction Welding of Dissimilar Materials.
Advances in Materials Science and Engineering. vol. 2019, pp. 1-9
Materials Research, vol 17, pp. 1397-1403.

Hsu: Hydrogen sulfide detection by nanocrystal pt doped TiO2-based gas sensors: Nanostructure Materials Vol. 6 (1995), p. 1001
Ho: Gas Sensor with Nanostructured OxideSemiconductor Materials: Sci.
Mardare and G.I Rusu: The inf luence of heat treatment on the optical properties of titanium oxide thin films: Materials Letters Vol. 56 (2002), pp. 213–214
Restrepo: Study of the bandgap of synthesized Titanium dioxide nanoparticules using the Sol-Gel method and a hydrothermal treatment: The Open Materials Science Journal Vol. 4 (2010), p. 9
Aziz: Synthesis and variable temperature electrical conductivity studies of highly ordered TiO2 nanotubes: Journal of Materials Science Vol. 44(2009), p. 4616

The dynamic stress concentration coefficients depend on the wavelength of the incident wave and the Poisson's ratio of materials [10].
Journal of Magnetism and Magnetic Materials. 322 (2010) 413–416
Manufacturing Processes for Engineering Materials.
Journal of Mechanical Engineering Science March. 7-1 (1965) 23-27
Introduction to magnetism and magnetic materials.

Mouritz., Introduction to aerospace materials.
International Journal of Production Economics 147A (2014) 94-107
Woodhead Publishing in Materials, Cambridge, 2007 [9] J.
Poza, Response of Cold Sprayed Ti6Al4V Coatings to Solid Particle Erosion and Micro-Scratch Wear Processes, Materials Science Forum 941 (2018) 1680-1685
Garrido, Oscillating Contact Wear in Cold Sprayed Ti6Al4V Coatings for Aeronautical Repairs, Materials Science Forum 941 (2018) 1686-1691

Temperature gradient leads to the uneven thermal expansion of material, part of the thermal expansion occurred affecting the inertial force of surrounding not completely expanded part of the material and thermal stress of other external limitations produce.
Beijing: Theory and application of finite element method(1998) [4] Practical Handbook of engineering materials Editorial Committee.
Practical Handbook of engineering materials ( volume one ).
Beijing: Science and Technology Press(2003) [6] Guo Ruiping,Liu Guanting,Fan Tianyou,Zhao Jianheng, Tan Fuli.
Dynamic Fracture of Impacted Hollow Cylinder with Semi-Elliptic Surface Crack.Chinese Journal of Applied Mechanics.Vol.1(2006)

However, some issues remain unsolved processing by MP, namely, high oxide content, high amount of secondary phases and the difficulty of obtaining very compact materials [7].
Vacuum induction melting of Ni Ti shape memory alloys in graphite crucible, Materials Science and Engineering, Volume 465, Issues 1–2, 15 September 2007, Pages 44–48
Materials science and technology, 16(6), pp.699-711
Gaffet, Mechanically activated reactive extrusion synthesis (MARES) of NiTi, Materials Science and Engineering A 473 (2008) 336–341
Gherghescu  Effect of artificial aging conditions on corrosion resistance of a TiNi alloy, Materials and Corrosion - Werkstoffe und Korrosion, (online: 6 March 2014), DOI: 10.1002/maco.201307557 [10] I.A.

All these methods in practical application have their own advantages, shortcomings and have shown their validity on different materials and loading conditions.
International Journal of Damage Mechanics,21(2012), 1076-1099
International Journal of Fracture, 2013, under review
International Journal of Fatigue, Volume 29, Issue 4, April 2007, 615-619
TMS The Minerals, Metals & Materials Society; 1993