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Introduction With the development of science and technology and industrial production, optical glass and ceramics, and other hard and brittle materials due to its many fine physical and mechanical properties, such as high hardness, wear resistance, corrosion resistance, high temperature resistant, etc, are widely used in many fields such as aerospace, chemical industry and military.
But its machinability is poor due to its brittle nature, especially parts of the materials have high hardness.
The grinding tests are carried out to study the grinding performance of hard and brittle materials, such as grinding force and surface roughness.
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Effects of Fineness on Activity Character of Fly Ash Zhongtao Luo1, a, Baoguo Ma2, b, Jiujun Yang1, c and Junxia Liu1, d 1School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450052,China 2Key Laboratory for Silicate Materials Science & Engineering of Ministry of Education, Wuhan University of Technology, Wuhan 430070, China aluozhongtao@126.com, bmbgjob@163.com, cyangjjun@zzu.edu.cn, dliujunxia80600@163.com Keywords: Fly ash; Fineness; Chemical activity; Micro-analysis Abstract: The hydrated character of cement paste with fly ash was studied, through the methods of compressive strength, non-evaporable water content, reaction degree of fly ash and micro-analysis.
Experiments Raw Materials.
Wang: Journal of Building Materials (in Chinese).
Xie: Journal of Building Materials(in Chinese).
Shi: Journal of Building Materials (in Chinese).

Quadakkers et. al, Metallic interconnectors for solid oxide fuel cells - a review, Materials at High Temperatures, Science Reviews 2000 Ltd. vol. 20, no. 2 (2003), pp. 115-127 (13)
Noor, The role of reactive elements on the interconnector materials for fuel cell, International Conference on Materials 2008, Johor Bahru, Malaysia
Prokic, Influence of ultrasonic melt treatment on microstructure and mechanical properties of AlSi9Cu3 alloy, Journal of Materials Processing Technology 211 (2011), pp.1729– 1735
[17] Itatani, K, Sinterability of magnesium silicon nitride powder with yttrium oxide addition coated using the homogeneous precipitation method, Journal of Materials Science 37 (2002), 737– 744
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In Journal of Materials Science Forum.
In Journal of Applied Mechanics and Materials.
In Journal of Applied Mechanics and Materials.
In Journal of Southeast University.
In Journal Stahlbau.

It is especially important for brittle ceramic materials like silicon carbide [4].
Springer Series in Materials Science, 1st ed, 2016
Fundamental problems of materials science, 11 (2014) 281-284
Ivanov, Nanostructuring the surface of metal-ceramic and ceramic materials by pulsed electron-beam treatment, Russian Physics Journal, 5 (2008) 60-70 [9] V.
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Usage of waste materials as concrete mixture can reduce the waste management crisis in the world.
[2] Valdivel T.S., Thenmozhi R., Experiment Study on Waste Tyre Rubber Replaced Concrete – an Ecofriendly Construction Material,Journal of Applied Sciences Research, 8(6): 2966-2973
[3] Eldin, N.N. & Senouci, A.B., Rubber Tire Particles as Concrete Aggregate, Journal of Materials in Civil Engineering, ASCE 5 (4): 478-496
[4] Fattuhi N, Clark L., Cement Based Materials Containing Shredded Scrap Truck Tire Rubber.
ASCE Journal of Materials in Civil Engineering.

MATERIALS AND METHODS MATERIALS ΒGS, isolated from the fermentation mycelium of Grifola frondosa; other reagents are reagents of AR grade.
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Journal of Triticeae Crops, 26(2006)163-166
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Journal of Bacteriology, 178(1996)4381-4391

Introduction Cellular materials can dissipate a large amount of kinetic energy at nearly constant stress during large deformation.
They can serve as effective and efficient energy absorbers to mitigate impact/blast loading if the base materials are properly selected and morphology of microstructures is well designed.
It can be seen that SKYDEX® has a similar performance with egg-box and woven textile materials, and outperforms aluminum foams.
Wang, Plastic deformation, failure and energy absorption of sandwich structures with metallic cellular cores, International Journal of Protective Structures, 1 (2010), 507-541
Evans, The out-of-plane compressive behavior of metallic honeycombs, Materials Science & Engineering A, 380 (2004), 272-280.

Yuan: Materials Science and Engineering Vol. 382, (2004), p.8 [2] R.
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Niyomwas: Journal of Metals, Materials and Minerals Vol. 19, (2009), p. 21 [10] N.A.

The skin materials may be metallic, wood, glass, or composite laminates.
Metallurgical and Materials Transactions B 36 (2005), p.125
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Journal of Composite Materials, Vol. 37 (7) (2003), p. 649-667
Journal of Sandwich Structures and Materials, Vol. 6 (2) (2004), p. 145