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Experimental Material and methods.
Spent catalysts after extraction of tungsten as raw materials riched in nickel oxide and compounds of aluminium, the XRD of residue showed in Fig.9.The residue was dissolved in sulphuric acid and the reaction took place in the water bath under the constant temperature by mechanical agitation (adjustable) ,nickel and aluminium were leached.
Journal of qinghai province science and technology, 2011, 1：88-89 [8] Jian Hang, Tuoliu Gao.
Journal of salt test.2011, 2（30）：226-229 [9] Yun Zhang, Liangliang Zhe etc.
Chinese Journal of Analysis Laboratory. 2005, 3(24):44-47

Calculation model The constitutive relation of rock and soil materials is the foundation of the geotechnical engineering design and calculation.
Due to the nature of the geotechnical materials, it is very difficult to establish an ideal constitutive relation, so that it is always to simplify various conditions to reflect its main properties in the engineering application.
Journal of Guilin Institute of Technology, 2003, 23(3):274-278.
Journal of Tongji University, 2001, 29 (10):1142-1146.
Chinese Journal of Geotechnical Engineering, 1996, 18 (1):1-6.

Effects of Different Variables on Seismic Behavior of Columns Based on the measured hysteresis loops of M-f and V-Δ relationships of columns shown in Fig. 3 to Fig. 6, the most important variables affecting a column’s seismic behavior were identified to be the amount of FRP confinement, the level of axial load, the P-Δ effect and the type of FRP materials.
Therefore, only the confining effectiveness of different FRP materials will be discussed in detail in the following section.
Sheikh, “Seismic Resistance of Square Concrete Columns Retrofitted with GFRP,” ACI Structural Journal, 102(5), 774-783, (2005)
Yau, “Seismic Behavior of Concrete Columns Confined with Steel and Fibre-Reinforced Polymers,” ACI Structural Journal, 99(1), 72-80, (2002)
Sheikh “FRP-Confined Circular Columns under Simulated Seismic Loads,” ACI Structural Journal, (2013), in press

Pereira, TIG welding with single-component fluxes, Journal of Materials Processing Technology. 99 (2000) 260-265
Zhang, Structure and properties of diffusion bonded TA2 to 1Cr18Ni9Ti joints with Ni + Nb composite interlayer, Journal of Aeronautical Materials. 30 (2010) 25-29
Dai, Minimum charge thickness of titanium/steel composite plates in explosive welding, Ordnance Material Science and Engineering. 34 (2011) 14-17
Nachum, Titanium to steel joining by spark plasma sintering (sps) technology, Journal of Materials Processing Technology. 213 (2013) 161-166
Gawade, Interdiffusion studies in titanium-304 stainless steel system, Journal of Nuclear Materials, 257 (1998) 44-50

Huang et al.: Diamond and Related Materials Vol. 10 (2001), p. 1850
Zhang et al.: Diamond and Related Materials Vol. 14 (2005), p. 1361
Braun: Diamond and Related Materials Vol. 5 (1996), p. 478
Trava-Airoldi et al.: International Journal of Surface Science and Engineering Vol. 1 (2007), p. 417
[9] American Society for Testing and Materials.

Experimental Study Materials.
Babafemi, A comprehensive review on mechanical and durability properties of cement-based materials containing waste recycled glass, Journal of Cleaner Production. 198 (2018) 891-906
Jasim, The behavior of lightweight aggregate concrete made with different types of crushed bricks, IOP Conference Series: Materials Science and Engineering.
Journal of Materials Research and Technology 24(2023)7444-7461
Ozturan, Effects of lightweight fly ash aggregate properties on the behavior of lightweight concretes, Journal of hazardous materials 179.1-3 (2010) 954-965

The loess is widely distributed over the northwest of China, and the compacted loess is used as constructional materials in the construction of fill-dam, road, railway and airport runway etc.
Landfill or hazardous waste storage site also use compacted loess as encapsulation and cushion materials.
[5]Marshall T J: J. of Soil Science Vol. 9 (1958), P.1-8
[8]Van Genuchten: Soil Science Society American Journal Vol.44 (1980), p. 892–898
[9]Fredlund D G , Xing A: Canadian Geotechnique Journal Vol.31 (1994), p. 521-532

Journal of Materials Proceedings Technology, 2002, 129(1-3), p. 435-440
Sun, et al: Development of diamond-coated drills and their cutting performance [J]Journal of Materials Proceedings Technology, 2002, 129(1-3), p. 81-85
Diamond and Related Materials ,2002,(11), p. 555–561
Diamond and Related Materials, 2004, 13(1), p. 6-13
Diamond & Related Materials, 2007, 16(3), p. 481-485

The apparent diffusivity of the materials considered was calculated by integration of the normal flux to the surfaces as in [6].
Earth and Planetary Science, 2002, 975-979
Tanaka, Average stress in matrix and average elastic energy of materials with misfiting inclusions, Acta Metallurgica, Volume 21, May 1973
Roubin, Meso-scale FE and morphological modeling of heterogeneous media - Application to cementitious materials, PhD Thesis, LMT-Cachan, 2013
Bogdan, Morphological modeling of cement based materials and hydration process, Conference proceedings, Microdurability 12 Amsterdam, 2012.

An important task is to develop a new aircraft engine materials protective coatings and methods for their synthesis in creating a multilayered compositions.
Multilayer coatings consisting of several tens of periodically arranged nanolayers synthesized from a variety of materials are a promising direction in producing the protective surface layers for compressor blades of gas turbine engine.
As a result of the above, the purpose of the work is the production of new materials and technologies Synthesis of vacuum ion-plasma coatings with submicrocrystalline structure for protecting the surface of the structural materials.
Suhova Synthesis of Multilayer Vacuum Ion-Plasma Coatings Ti-Tin during the Surface Modification, Materials Science Forum, 870 (2016) 113-117
Suhova, Assessment of quality of innovative technologies, International Journal for Quality Research, 10 (2016) 707-718