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1.Mydin M.D., Azree Othuman. Modelsfor prediction the strength and stiffness of foamed concrete at ambient temperature. European researcher. № 1-2 (67), P. 124-129, 2014.

2.Othuman Mydin M.A., Noordin N., Matory Z., Sani N.M., Zahari N.F. Experimental investigation into pull-out strength of foamed concrete using different types of screw «Building Surveying, Facilities Management and Engineering

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References

1. Mydin M.D., AzreeOthuman. Models for prediction the strength and

stiffness of foamed concrete at ambient temperature. EЮЫШЩОКЧ ЫОЬОКЫМСОЫ. № 1-2

(67). P. 124-129, 2014.

2.OthumanMydin M.A., Noordin N., Matory Z., Sani N.M., Zahari N.F. Experimental investigation into pull-out strength of foamed concrete using different types of screw «Building Surveying, Facilities Management and Engineering Conference, BSFMEC 2014» EDP Sciences 2014.

3.Morgun L.V., Morgun V.N., Pimenova E.W., Smirnova P.V., Nabokov Ya.S. Possibility of using non-autoclaved fibro-concrete in largepanel housing construction // Building Materials2011. №3-19.

4.Udachkin I.B. Key problems of development of foam concrete produc-

ЭТШЧ// BЮТХНТЧР ЦКЭОЫТКХЬ. 2002. № 3. P. 8.

5.Slavcheva G.S., Kotova K.S. Improving the efficiency of non-autoclaved cellular concrete (foam concrete) in construction.

6.Baranov I.M. Strength of non-autoclaved foam concrete and possible ways to improve it // Building materials. 2008. P. 24.

7.Lvovsky E. N. Statistical methods for building empirical formulas: textbook for universities. 2nd ed., Rev. and extra. M.: Higher. SHK. 1988. 239 p.

8.Sendowski E., Churc O. Statistical methods of quality management. Moscow: publishing House «Mir», 1976. 592 p.

9.Kukina O.B. Technogenic carbonaceous waste and the technology of their use in building materials, taking into account the structure-forming role (dissertations of Cand.Tech.Sci.) // Voronezh: VGASU, 2002. 186 p.

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POSSIBLE APPLICATIONS FUNCTIONAL COMPOSITES OF NICKEL-BORON IN MECHANICAL ENGINEERING

A.V. Zvyagintseva

Voronezh State Technical University, Russian Federation, 394006, Voronezh, ul. 20-letiia Oktiabria, 84

Corresponding author: Alla V. Zvyagintseva, E-mail: zvygincevaav@mail.ru

The directions of application of nickel-boron composites for various purposes are considered: mechanical engineering, power engineering, electronics and instrument making. The main functional properties of coatings are determined and recommendations for their practical use are given. In more detail, the possibility of using Ni-B composites as an alternative coating for electrolytic chromium is considered. Describes the results of the study: environmental performance, technological parameters, physical-mechanical properties of electroplating composites of Ni-B. the technology of production of laminated coatings of composites of Ni-B with subsequent thermal treatment between cycles of deposition of the layers. Layer-by-layer annealing provides a layer thickness of ~500 microns. Studies have shown that low – temperature annealing at 190-200 ˚C for 20 to 30 minutes with a thickness of not more than 2-2.5 microns is required. The proposed nature of the sequences of the technological process for obtaining the reduced layer of the product. It is proposed to determine the number of cycles of successive lowtemperature annealing of the restored layers of Ni-B composite by the formula: ∑d = n×ʋ, where d – is the coating thickness, n – is the number of cycles, ʋ – is the deposition rate, microns /min.

Keywords: nickel-boron composite, functional properties, mechanical engineering, technology for obtaining layered coatings, low-temperature annealing, number of cycles

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