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Therefore, the aim of this study is to identify the optical properties by mean of their UV-Vis and photoluminescence spectroscopic of the Er3+ doped borotellurite glass.
Alloys Compounds, 475 (2009), 569-576 [5] Y.
Rao, in: Structural investigations of sodium diborate glasses containing PbO, Bi2O3 and TeO2: Elastic property measurements and spectroscopic studies, Journal of Non-Crystalline Solids, 353 (2007), 1150-1163
Xiujian, in: Structure, upconversion and fluorescence properties of Er3+-doped TeO2-TiO2-La2O3 tellurite glass, Journal of Rare Earths, 25 (2007) p. 108 [9] El-Mallawany R, in: J.
Hu, in: Concentration quenching in erbium-doped tellurite glasses, Journal of Luminescence, 117 (2006), 39-45

The present study aims to develop iron based silica sand nanoparticles composites with improved mechanical properties.
Therefore the present study aims to develop silica sand nanoparticles by ball milling and then using these nanoparticles, the composite with iron matrix were prepared.
The results indicate that the iron based silica sand nanoparticles composites have hardness and tensile strength of equivalent to many of commercial iron alloys.
Lai, “Recent Developments in the Fabrication of Metal Matrix-Particulate Composites Using Powder Metallurgy Techniques’, Journal of Materials Science, 29 (1994) 1999 [2] G.
Materials Prepared by Sintering and Infiltration”, Journal of Powder Metallurgy and Metal Ceramic, 40[1-2] (2001) [3] Karabi Das, T.

Magnesium addition was performed by adding FeSiMg alloys.
Alloy iron with a carbon content of less than 2% is referred to as steel.
The composition of magnesium ranges from 3 to 12% by weight In Fe-Si-Mg alloys, and the required amount of nodularization alloy varies according to the type of process used and the type of alloy added, this amount varies from 0.9 to 2.5%.
Therefore, this study was conducted with the aim of investigating the effect of Magnesium content on the strength, stiffness and toughness of nodular cast iron. 2.
Xu, Microstructure characteristics and mechanical properties of new-type FeNiCr laser cladding alloy coating on nodular cast iron, Journal of Materials Processing Technology 269 (2019) 163-171

This study aims to describe the preparation and characterization of SiO2/TiO2 core-shell particles.
In order to prepare the homogenous SiO2/TiO2 inorganic compounds by sol-gel process, SiO2 particles were used as the core, AcAc served as a chelating agent to chelate with TTIP (which was used as the precursor to TiO2), and PEG was added to stabilize the hydrolysis/condensation process.
Marr, Optical Trapping of Titania/Silica Core-Shell Colloidal Particles, Journal of Colloid and Interface Science 221 (2000) 301-307
Serna, Spherical iron/silica nanocomposites from core-shell particles, Journal of Colloid And Interface Science 294 (2006) 355-361
Liu, Fabrication of titanium diboride–carbon core–shell structure particles and their application as high-efficiency grain refiners of wrought aluminum alloys, Scripta Materialia 68 (2013) 789–792

Traditional natural materials (metals, alloys and other structural materials) cannot often meet these high and conflicting requirements.
UHMWPE has high resistance to corrosive chemical compounds.
The aim of this paper is obtaining composite materials for structural use and investigation of their mechanical and dielectric characteristics.
Mulenkov and others, Russian Physics Journal 5/2, (2012), 151-155.

However, with economic development, environmental protection is required more strictly, TEOS hydrolysis is restricted in application due to serious VOC (volatile organic compound) problem, security risk, etc.
References [1] Lan Wu: Journal of Northwest institute for Nationalities Vol. 23 (2002), p. 19—20, in Chinese
[2] C.Yuan, S.Jones: Journal of the European Ceramic Society Vol.23 (2003), p. 399—407
[3] Yunxiang Xu, Rui Lu, Lei Li: Special casting & nonferrous alloys (2004), p. 52—54,in Chinese
[5] Zhihui Feng, Wu Yao: Journal of materials science & Engineering Vol.23(2005), p. 578—600, in Chinese.

Balela, Journal of Physics: Conference Series 985, 012027 (2018)
Ammar, Journal of Molecular Structure 1141, 99-106 (2017)
Gao, Journal of Colloid and Interface Science 462, 315-324 (2016)
Lee, International Journal of Hydrogen Energy 40(1), 767-778 (2015)
Aboud, Journal of Alloys and Compounds 641, 201-204 (2015)

This advantage is aimed for the synthesis of nickel-cobalt ferrite nanoparticles in aqueous medium using freshly extracted albumen (egg white), Ni(NO3)2:6H2O, Fe(NO3)3:9H2O and Co(NO3)2:6H2O as raw materials.
[2] T.Krishnaveni, B.RajiniKanth, V.SeethaRamaRaju, S.R.Murthy, Fabrication of multilayer chip inductors using Ni-Cu-Zn ferrites, J. of Alloys and Compd., 414 (2006) 282-286
[3] Xinyong Li and Charles Kutal, Synthesis and characterization of superparamagnetic CoxFe3−xO4 nanoparticles, Journal of Alloys and Compounds, 349 (2003) 264-268
[21] S.Prasad, N.S.Gajbhiye, Magnetic studies of nanosized nickel ferrite particles synthesized by the citrate precursor technique, J.Alloys Compd., 256 (1998) 87-92
Murthy, Electrical properties of Mn added MgCuZn ferrites prepared by microwave sintering method, Journal of Magnetism and Magnetic Materials,    283 (2004) 109-116. [28] P.V.Reddy, T.S.Rao, Dielectric behaviour in Co-substituted NiSb ferrites, Journal of Materials Science Letters, 16 (1997) 1076-1079

Producers of secondary raw materials composed of salts, halide compounds and oxides are metallurgical enterprises, including those producing aluminum and silicon.
The composition of melted alloys, the furnace gas cleaning technology and the exhaust fume capture technology influence the properties of waste products.
The TIG welding makes it possible to obtain high quality joints from steels of various grades, including high-alloyed ones, as well as non-ferrous metals and their alloys [17-25].
The third composition - nanosilica – was composed of silicon compounds of an ultrafine fraction with a particle size of 40-80nm.
Méndez, Surface modification of ductile iron produced by an innovative in-situ casting technique, International Journal of Cast Metals Research. 33(23) (2020) 103111

W in the NiW coating forms definite compounds with the refractory elements of the superalloys.
The size of these compounds increase during service by dissolution of alloying elements and coalescence to slow down interdiffusion kinetics.
The nominal composition of this alloy developed by ONERA [6] is given in Table.1.
The DB limits some alloying elements diffusion from the substrate to the surface, especially Cr and Ru. 7.
Robinson, Journal of Materials Processing Technology.