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It is brittle material and so, it is hard to machine.
In recent years, many researchers studied the ductile regime removal of the brittle materials through indentation, scratch, single point diamond machining and precision grinding experiments [1,2].
Zarudi: International Journal of Mechanical Sciences, Vol.43 (2001), pp.1985
Duduch: Journal of Materials Science Letters, Vol.18 (1999), pp.1185
Kirscht: Semiconductor Science Technology, Vol.14 (1999), pp.936

However, in Shanxi which is a big province in producing coal, comprehensive utilization of coal gangue mainly limited to its resource-oriented utilization, for example, generating electricity, producing building materials such as tile etc, and producing manure for agriculture, etc.
It is a good kind of material.
Chinese Journal of Rock Mechanics and Engineering, 2006, 25 (journal 01): 109-205
Journal of Chongqing Jiaotong University, 2004, 23(05):52-54
Journal of Heilongjiang Institute of Science and Technology, 2003 (06), 13 (02): 28-30

Selective Reduction of Chloronitrobenzene to Chloroaniline on Ni/Al2O3 Catalysts Got-up Ionic Liquids Xing Huanga,Mang Zhengb, Yuxiang Wangc, Dandan Lid, Yajuan Zhao*e College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325027, P.R.
Experimental Experimental materials Ionic liquids were prepared according to the procedures described in the literature [22].
Journal of Catalysis.
Journal of Colloid and Interface Science.
[11] B.Zhao, Y.W.Chen.Materials Chemistry and Physics.Vol.09(2010),p.061

During pulping, raw materials were dissolved in water and fibres were separated to produce pulp slurry.
Kandachar: Composites Science & Technology Vol. 63(9), (2003), p. 1325 [2] P.
Journal of Solids & Structures Vol. 40(21), (2003), p. 5599 [3] A.
Marcondes: Packaging Technology & Science Vol. 7(2), (1994), p. 65 [6] J.H.
Tarnawski: Fibres & Textiles Vol. 14(4(58)), (2006), p. 91 [10] Girlanda, O. & Fellers, C.: Nordic Pulp and Paper Research Journal Vol. 22(1), (2007), p.49

The results show that the hysteresis of sensor can not be improved by changing the materials, so a compensation algorithm is designed based on the characters of sensor hysteresis.
Yang : Journal of Henan Normal University(Natural Science) Vol. 3 (2007), p. 60 [5] S.X.
Chen: Journal of Henan Normal University(Natural Science) Vol. 38 ( 2010), p. 82 [12] M.
Yang: Journal of Henan Normal University(Natural Science) Vol. 7 (2007), p. 809 [14] M.
Chen: Yinshan Academic Journal(Natural Science Edition) Vol. 24 ( 2010), p. 23

Journal of materials science and engineering, 2008, 26(6): 990-994 [2] T.C. powers.
Journal of Colloid and Interface Science, 1972 (38)75-83 [8] G.G.
Journal of Colloid and Interface Science 243, 2001:193-201 [10] Bernard Erlin, Bryant Mather.
Beijing: Science Press, 2006 [13] Bjorn Johannesson.
Army Material Command, CRREL, Special Report 64 [18] Josef P.

Therefore, the surface of the component materials should have frictional resistance.
The conventional method such as nitriding, carburizing, and nitrocarburizing are methods for surface hardening of the materials so that the surface of the material components will be frictional resistant.
Dutka, Journal of super-hard materials, 1063-4576, Vol. 30, Number 5, 2008
[4] Makishi et al., Engineering and mining Journal, 2009
Gredelj, et al., thin Solid Films, science direct, online at www.sciencedirect.com , 2006

The applied materials to which the calculation have been performed were DC04 and DP800 steel sheets.
Materials and Methods Applied materials.
Besides, in plane strain tension, materials with higher r-value lead to lower critical major strain.
(14) Values of A80 of both materials in descending order as well as calculated FLCs are depicted by Fig. 7.
Kuwabara, “Advances in anisotropy and formability”, International Journal of Material Forming, 3:165-189, 2010, doi: 10.1007/s12289-010-0992-9

They have the advantage of being relatively inexpensive compared to other refractory materials.
These are Al2O3-rich materials, semi-sillimanite materials, sillimanite materials, mullite materials, mullite-corundum, and corundum materials.
These grogs are used in the manufacture of other refractory materials, most notably mortars, bonding materials, mullite bricks, firing accessories, and refractory castables.
Raw materials.
Journal of Asian Ceramic Societies. https://www.sciencedirect.com/ science/article/pii/S218707641400027X [9] BHATTACHARYYA, Santanu.

The Formation of Cooper Pairs and Their Role in Nondissipative Diamagnetic Currents in the Micro- and Macro-Scopic Sized Graphene Materials; Towards High-Temperature Superconductivity Takashi Kato Institute for Innovative Science and Technology, Graduate School of Engineering, Nagasaki Institute of Applied Science, 3-1, Shuku-machi, Nagasaki 851-0121, Japan KATO_Takashi@NiAS.ac.jp Keywords: Supercurrents; Aromatic hydrocarbons; Cooper pairs; sp2-hybrid orbitals; sp3-hybrid orbitals Abstract.
Therefore, the HOMO-LUMO gaps for materials with N carbon atoms are very small (≈ 0.0 eV).
Discovery of appropriate combination of additional materials with the main carbon materials, by which the ratio of the sp3-hybrid orbitals becomes large enough, is awaited.
Setzer, Advanced Materials 24 (2012) 5826
Hirao, Journal of Chemical Physics 116 (2002) 3420.