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The main theoretical results were obtained by using approaches based on classical methods of calculating machine parts, theory of machines and mechanisms, tribology and triboengineering, kinetic theory of fracture of materials.
A work-piece is a gear wheel of 20 mm module, material – 40ХМ.
Thus, the use of modern tool materials allows implementing a fundamentally new technology for gear wheels milling by using a form-generating method [18 – 24].
Simultaneously with the change of tool materials and application of wear-resistant coatings, the design of modern hob cutters was also changed, so they had an extended working section length compared to standard cutters.
Egorov, Educational and methodical complex - a center of high-tech equipment with cnc and technological preparation of production, Scientific Journal Modern problems of science and education. 3 (2014)

Compound semiconductor, etc. are used as optical sensor materials, but diversification of the apparatus which an optical sensor is put in develops various sensor materials.
We fabricated Si:SiO2 films including nanoscale materials with a radio frequency (rf) sputtering device.
Martín-Palma, Journal of Materials Science, 45 (2011) 2823-2838
Koshida, ECS Journal of Solid State Science and Technololgy, 3 (2014) R83-R88
[7] Koichi Tanaka, Taichi Yoshida, Key Engineering Materials 698 (2016) 13-18

This will bring about a better understanding of the relationship between the sputtering process and the properties of the produced film for both N and P type materials.
The efficiency of such materials is determined by the figure of merit [4].
Materials and Methods A.
Materials: Propanol, microscope viewing glass slides, silicon substrates, N-type (Bi(2)Te(2.7)Se(0.3)), P-type (Bi(0.5)Sb(1.5)Te(3)) B.
Von Jouanne, Journal of power sources, 177, 239 (2008)

The design of underground continuous wall combining with new materials and various of functional joints have been arisen in the construction technology.
,JOURNAL OF SHUIAZHUANG RAILWAY INSTITUTE(NATURAL SCIENCE)23(1)(2010),p.59-61
JOURNAL OF SOUTHEAST UNIVERSITY (Natural Science Edition,41(2)(2011),p.352-358
,Journal of Earth Sciences and Environment,32(3)(2010),p.311-315
,Journal of Hebei University of Engineering (Natural Science Edition),28(1)(2011),p.22-24

Therefore, using substitute material of the asbestos fiber became an irreversible general trend in building materials industries.
Experiment Raw Materials ① Cement.
This experiment adopted silica fume produced by Beijing Bang De Yin Synthetic Materials Institute.
After dry mixing, the materials were poured into mortar mixer, then water was added gradually while still mixing, and the stir time was 3 min after all materials added.
Silica fume is a kind of mineral materials, and the main component is SiO2, whose content is over 95%.

It is common technical practice that we encounter moulds made from more kinds of metal materials.
The plate sample material was identical to the materials used for the moulds.
Firth, Characterization of mold fouling during elastomer injection molding, Journal of Applied Polymer Science. 102 (2006) 3186-3194
Karbhari, Effect of internal mold release agent on the cure and property variation in resin transfer molding composites, Journal of Materials Science Letters. 17 (1998) 2061-2062
Erre, Behavior of internal mold release agent during BMC thermosets composites cure and aging, Journal of Materials Science Letters. 20 (2001) 1989 – 1991

There is not carried out the study of the mechanism of the hydration characteristics of the system of the microscopic structure and cementitious materials and the hydration process of copper slag in cementitious materials system.
Development Guide to Building Materials, No. 1, 1988
Iron Raw Materials to Formation of the Cement Clinker and its Properties [J].
Nanchang University Academic Journal (Engineering Science Edition), No.2, 2000
University Journal (Engineering Science Edition), No.2, 2000

Cui: Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science, Vol. 47A (2016) No.7, p.3633
Watanabe: Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science, Vol. 46A (2015) No.2, p.903
Ohyanagi: Journal of Materials Science, Vol. 41 (2006) No.3, p.763
Zhu: International Journal of Minerals Metallurgy and Materials, Vol. 19 (2012) No.4, p.354
Nakai: Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science, Vol. 42A (2011) No.9, p.2843

The refractory alloys, being difficult-to-form materials in the narrow temperature range should provide requirement grain size and mechanical behavior according technological documents in finished products.
[5] Dayong, C., Wenchang, L., Rongbin, L., Weihong, Z. and Mei, Y. (2004) ‘On the accuracy of the X-ray diffraction quantitative phases analysis method in Inconel 718’, J. of Materials Science, Vol. 39, No. 2, pp.719–721
[6] Ganesh, P., Kaul, R., Paul, C.P., Tiwari, P., Rai, S.K., Prasad, R.C. and Kukreja, L.M. (2010) ‘Fatigue and fracture toughness characteristics of laser rapid manufactured Inconel 625 structures’, Materials Science and Engineering A, Vol. 527, Nos. 29–30, pp.7490–7497
[7] Khana, Z.A., Hadfield, M., Tobe, S. and Wang, Y. (2005) ‘Ceramic rolling elements with ring crack defects – a residual stress approach’, Materials Science and Engineering A, Vol. 404, Nos. 1–2, pp.221–226
Armstrong, Dislocation-mechanics-based constitutive relations for material dynamics calculations, Journal of Applied Physics. 61 (5) (1987) 1816-1825

The monodisperse spherical particles used as raw materials to prepare photonic crystal materials and multifunctional catalysts with core-shell structure have attracted wide attention and become the research hotspot in chemistry, materials science, and many other disciplines and cross-cutting areas [5]. 
Experimental Materials and Instrumentation.
Vol.72 (2004), p.175 [8] G.H Bogush and C.F Zukoski IV: Journal of Colloid And Interface Science.
Journal of Colloid and Interface Science.
Electronic Components & Materials.