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The secondary raw materials of metals include such products and materials that can be reused after its initial operation in various industries.
In addition, recycling is economically advantageous, especially concerning the disposal of scrap superhard materials and alloys with their subsequent recovery and, accordingly, significant savings in strategic raw materials [8].
After all, the process of metal remelting is less harmful to the atmosphere than its production from primary raw materials.
Gurenko, Modeling dynamic parameters of hard alloys during shock wave regeneration, IOP Conference Series: Materials Science and Engineering. 969(1) (2020) 012079
Yudenkov, Time relaxation of point defects in p- and n-(HgCd)Te after ion milling, Journal of Electronic Materials. 32(7) (2003) 698-702

Journal of Materials Processing Technology. 2007; 187-188: 761–765 [4] M.
Materials Science and Engineering: A. 2013; 560: 787-791
Materials Science and Engineering: A. 2013; 560: 473-480
Materials Science and Engineering: A. 2011;528;4312-4317
Journal of Materials Science & Technology. 2011;27;7;633-640

Thin film coating with smooth and dense layer was produced by Magnetron sputtering [16, 17], so Al coating was deposited on 0Cr18Ni10Ti austenite steel to improve high temperature oxidation resistance, Experiment Procedures Materials.
Rare Metal Materials and Engineering, 40(2011):661-664
Journal of Electronic Materials, 30(2001):3-7
Chinese Journal of Vacuum Science and Technology, 29(209):91-93
Journal of Tian jian Normal University(Natural Science Ediion), 31(2011):38-41

Hanada: Materials Science and Engineering A Vol 364 (2004), p. 151
Lee: Materials Science and Engineering A Vol 396 (2005), p. 159
Guo: Progress in Natural Science: Materials International Vol 22(2) (2012), p. 139
Laabs: Materials Science for Engineering,(1991)
Hansen: Materials Science and Technology Vol 6 (1990), p. 6.

Thus, nano-materials has been gained constant and increasing attention.
Materials and methods Materials.
Nano-materials used in this study were nano-CaCO3 and nano-SiO2.
But the slump of C50 concrete with nano-materials decreased a little more then that of C30 concrete with nano-materials, compared to that of plain concrete.
The reasons may be as follows: The lower water/binder ratio and the larger dosage of nano-materials of C50 concrete means more water was needed to package the surface of nano-materials [2].

Introduction Geopolymer cement is produced by mixing materials that contain aluminosilicate (also called precursor materials), such as fly ash, slag, laterite and other natural or by-product materials, with either an alkaline solution (NaOH, Na2SiO3, and K2SiO3) or an acidic solution (H3PO4).
Moreover, the alkali-to- precursor material ratio was found to be in the range of 0.4 to 0.6 [12, 13] There is little research on geopolymer mortar produced from naturally occurring materials such as laterite soil.
Furthermore, using natural materials like laterite soils to produce geopolymer mortar can provide advantages to rural areas in developing nations by allowing the production of construction materials at the construction site.
Materials.
Ghosh, “Effect of mix composition on compressive strength and microstructure of fly ash based geopolymer composites,” Journal of Engineering and Applied Sciences, vol. 4, no. 4, pp. 68–74, 2009

The success of this technology in extending seafood shelf time depends on a series of factors, such as the quality of the raw material used, good hygiene during process, packaging material, gas mixture, preservation temperature[12].
Materials and Methods Caviar Samples.
Journal of Food Engineering, vol. 70, pp. 564-570, 2005
International Journal of Food Science & Technology, pp. n/a-n/a, 2013
Asian-Australasian Journal of Animal Sciences, vol. 26, pp. 134-142, 2013

Environmental Risk Assessment of Petrochemical Project Lina Zheng1,a, Zhi Zhang1,b, Jingni Xiao1,c, Hong Wang2,d 1 College of Marine Technology and Environmental, Key Laboratory of Nearshore Marine Environmental Research, Dalian Ocean University, Dalian 116023, China 2 School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, China aZln@dlou.edu.cn, bzz8851@126.com, c jnx@dlou.edu.cn, dhongw@126.com.
Main evaluation factors of dangerous materials were intended to be liquefied petroleum gas in the project, according to the fire risk, the toxicity, the use and storage conditions of materials.
The leakage of the materials ought to be avoided so as not to cause surface water environment and soil pollution.
Patel: Journal of Cleaner Production Vol. 19 (2011) p. 1659-1667 [5] Zoe Nivolianitou, Myrto Konstandinidou and Christou Michalis: Journal of Hazardous Materials Vol. 137 (2006) p. 1-7 [6] Henno P. van Dokkum and Sherri L.
Colomer Mendoza and Antonio Gallardo Izquierdo: Journal of Hazardous Materials Vol. 162 (2009) p. 1-9 [8] W.

Preparation and Properties of Polypropylene-graft-cardanol by Reactive Extrusion Qinhui Chen 1, 2, a and Jinhuo Lin 1, 2, b 1 College of Material Science and Engineering, Fujian Normal University, Fuzhou 350007, China 2 Fujian Key Laboratory of Polymer Materials, Fuzhou 350007, China achenqh@fjnu.edu.cn, bjhlin@fjnu.edu.cn Keywords: poly (propylene) (PP); reactive extrusion; cardanol; renewable resources; compabilization; anti-aging Abstract: The polypropylene-graft-cardanol (CAPP) was prepared by reactive extrusion with polypropylene (PP) and natural renewable cardanol which could improve the inherent defects of PP such as chemical inertness and hydrophobicity.
The reactive materials would remain in extruder for 1 min at a screw speed of 50 rpm and at the temperature of 180 oC.
TABLE1 FORMULA AND GRAFTING RATIO OF PP-GRAFT-CARDANOL AND ITS MIXTURE Samples PP Cardanol Initiator Mass of initiator Grafting ratio PP 100 0 DCP 0 0 CAPPm 100 5 0 CAPP0 100 0 DCP 0.2 0 CAPP-DCP 100 5 DCP 0.2 4.45 CAPP-BPO 100 5 BPO 0.2 0.92 CAPP-dTBP 100 5 dTBP 0.2 1.01 Compatibilization of Cardanol Grafted onto PP on the Composite Materials of Bamboo Power and PP Fig. 1 was the polarization microphotos at the magnification of 50 of bamboo plastic composite materials.
Effect of Anti-aging Performance of Cardanol Grafted onto PP To investigate the improvement of grafting reaction during the destruction of PP materials, the destruction of PP and 5 % cardanol blend (CAPPm) was studied as reference (Figure 2).
Lin, Preparation of polypropylene-graft-cardanol by reactive extrusion and its composite material with bamboo powder, Journal of Applied Polymer Science. 115 (2010) 1160-1167

The unequal divided shear zone Function relation between yield shear stress and shear angle .With the development of material science and technology, a variety of constitutive models have been proposed to describe the thermal-viscoplasticity of metal material, such as Johnson-Cook model, Zerrili-Armstong model and Follansbee-Kocks model.
Journal of applied physics, 1945. 16(6): p. 318-324
Journal of materials processing technology, 2007. 182(1): p. 167-173
Molinari, A modelling of cutting for viscoplastic materials.
International Journal of Mechanical Sciences, 1997. 39(4): p. 369-389.