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Influence of Quenching Temperature on Microstructure and Properties of 40Cr Steel by Zero Time Holding quenching A.M.Li a and M.J.Hu b School of Materials Science & Engineering,Henan Polytechnic University, Jiaozuo 454000, China aanmingli2001@sina.com, bhumengjuan05@126.com Keywords: 40Cr steel, Zero time holding quenched, Tensile strength, Hardness, Microstructure Abstract.
Experimental Material and Methods Experimental Material.
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Final properties of ceramic products depend on raw materials, shaping technologies and optimization of the sintering process.
Among them, the most common approach is the reaction sintering using AlN and Al2O3 as raw materials.
Stark, Laufenburg, Germany, 99.95% purity) were used as starting materials.
Roy, Journal of materials science letters, 1999. 18(24): p. 1989-1990
Zhang, Journal of materials science letters, 2001. 20(1): p. 77-79

Epidemic Materials Reserve and Distributing Problems.
There were excess varieties materials from post-disaster allocations, donations and the source of various channels, but they lack the pertinence.
To plan emergency epidemic materials reserve and guarantee accurate launch epidemic materials after disaster.
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In Chinese [7] Yanling Zhang: Journal of PLA Medicine, 2009, Vol.34,No.1: 1-6.

Experimental Conditions and Procedure Materials and Preparation.
Both materials had a boron nitride coating applied, which was used to reduce shear stresses during the SPF process.
Journal of Materials Engineering and Performance.
Journal of Materials Engineering and Performance.
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The Powder Metallurgy friction materials are classified as copper-based, iron-based and iron-copper-based friction materials.
Zhou ea tl. [5] investigated the performances of copper-based, iron-based and iron-copper-based friction materials and discovered that copper-based friction materials have stable friction properties under both vacuum and atmospheric conditions.
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Li: Materials Engineering No.5 (2006), p. 25 [9] S.Y.
Jin: The Chinese Journal of Nonferrous Metals Vol.17 No.4 (2007), p. 614 [12] S.Z.

Mikulab, Characterization of chromium doped tricalcium silicate using SEM/EDS, XRD and FTIR, Journal of Hazardous Materials, Vol.42(1), pp.87-102,1995
Salleh, Contribution of rice husk ash to the properties of mortar and concrete : a review, Journal of American Science, Vol 6(3), 2010
Ahalawat, Beneficial role of nanosilica in cement based materials – a review, Construction and Building Materials,Vol. 47, pp. 1069-1077, 2013
Sinthupinyo, "Pozzolanic Activity of Rice Husk Ash -Comparison of various electrical methods," Journal of Metals, Materials and Minerals, vol. 19, pp. 1-7, 2009
Fayyadh, Rice husk ash concrete: the effect of rha average particle size on mechanical properties and drying shrinkage, Australian Journal of Basic and Applied Sciences, Vol.3(3), pp. 1616-1622, 2009

Aim of this work The aim of this work was to design a lightweight I-beam structure made ​​of composite materials.
Structural behavior of hybrid FRP composite I-beam (2010) Construction and Building Materials, 24(6), pp. 956-969
Analysis of preconditioned glass fibre reinforced composite sandwich I-beams in bending (2002) Proceedings of the Institution of Mechanical Engineers Part L: Journal of Materials: Design and Applications, 216(2), pp. 145-153
[14] Narmashiri, K., Jumaat, M.Z., Sulong, N.H.R., Local stiffening of steel I-beams by using CFRP materials (2010) Advanced Materials Research, 163-167, 3838 [15] Fatzinger Jr., E.C., Hill, E.V.K.
Experimental study on the flexural property of GFRP I-beam (2012) Advanced Materials Research, p. 594-597

Abstract: The carbon composite materials with silicon carbide coating were prepared for aluminum electrolysis as inert anode.
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WANG.: Journal of Anyang Teachers College, (2005), p.41

Zajcev Effective Fine-Grained Concrete with High-Dispersed Additive Based on the Natural Mineral Wollastonite, FarEastСon - Materials and Construction: Materials International Scientific Conference «FarEastCon». 945 (2018) 85-90
Bondarenko, Effective Highly Dispersed Additive for Concretes on the Basis of Natural Mineral Raw Materials, FarEastСon - Materials and Construction: Materials International Scientific Conference «FarEastCon». 992 (2019) 168-172
Efremochkin, Nano-additives for composite building materials and their environmental SAFETY,International Journal of Applied Engineering Research. 11 (2016) 7561-7565
Minko, Determination of the thermal conductivity of wood insulation materials in conditions of non-stationary heat transferInternational, Journal of Applied Engineering Research. 22 (2014) 15791
Liseitsev et al, Development of fiber concretes with cement-free binders, Modern science-intensive technologies. 1 (2019) 124-130

Journal of Materials Engineering and Performance, doi: 10.1007/s11665-011-9855-x (2011)
Materials Science & Engineering A. 655: 379–387, doi:10.1016/j.msea.2015.12.103 (2016)
Fundamentals of Materials Science and Engineering.
Procedia Materials Science 11: 509-514, doi:10.1016/j.mspro.2015.11.082 (2015)
Journal of Materials Science: Materials in Medicine 25(4): 975–988, doi:10.1007/s10856-013-5127-7 (2014).