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Effect of Nano-graphite on Friction Performance of Cu-based Friction Material Jianhua Du1, a, Yuanyuan Li2,b and Xiaohui Zheng1,c 1 Department of Equipment Remanufacture Engineering, Academy of Armored Force Engineering, Beijing 100072, China 2 School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China adjh619@sina.com, blify46@yahoo.com, czhengxiaohui1979@sohu.com Keywords: Friction Materials, Powder Metallurgy, Nano-carbon, Friction Performance.
So n-C can improve the wear resistance of the friction materials and reduce the wear rate of the mating materials.
Yin: Journal of Central South University(Science and Technology) Vol. 39 (2008), p. 517 (in Chinese) [3] Y.
Deng: Journal of Academy of Armored Force Engineering Vol. 23 (2009), p. 19 (in Chinese) [6] R.X.
Li: The Chinese Journal of Nonferrous Metals Vol. 18 (2008), p. 1453 (in Chinese)

Study on Sintered Wall Materials Made Use of Iron Tailings and Waste Rock JIAN Shou-wei a YUAN Long b LV Yang c TAN Hong-bo d LI Xiang-guo e MA Bao-guo f Key Laboratory for Silicate Materials Science and Engineering of Ministry of Education,WHUT,Wuhan 430070 ajianshouwei@126.com, b 332449709@qq.Com, c 282849820@qq.com, dthbwhut@163.com, e lxggroup@163.com, fmbgjob@163.com Key words: iron tailings; waste rock; sintered wall materials Abstract.
This paper presents the study on sintered wall materials made use of iron tailings and waste rock.
Experimental 2.1 Raw Materials Raw materials come from Xingning Rising Limited include: Tailings(A) and Rock (C).
Chemical composition of the two materials are list in Table 1.
Compressive strength testing machine: Wuxi East building materials plant JES-2000A-type strength machine.

Manufacture and grinding performance of a polyimide resin-bonded cBN wheel for precision grinding of ferrous materials JianLin Chen 1,a, Long Wan2 1Key Laboratory of Efficient & Clean Energy Utilization, College of Hunan Province, Changsha University of Science & Technology, Changsha 410004, China; 2College of Materials Science & Engineering, Hunan University, Changsha 410082, China acjlinhunu@qq.com Key words: Cubic boron nitride; Grinding wheel; Ferrous material; Polyimide resin Abstract.
Furushiro, et al, Development of ultra-fine-grain binderless cBN tool for precision cutting of ferrous materials, Journal of Materials Processing Technology, 209 (2009) 5646-5652
Mills, High-speed grinding with CBN grinding wheel – applications and future technology, Journal of Materials Processing Technology 110 (2001) 78-88
[3] Xiaoping Li, A free-abrasive machining approach to dressing of resin-bonded CBN grinding wheels, Journal of Materials Processing Technology 48 (1995) 223-230
Isono, New development of a grinding wheel with resin cured by ultraviolet light, Journal of Materials Processing Technology 113 (2001) 385-391.

This trend depends on the ability to build new composite materials combining more than two materials.
International journal of engineering science, 27(5), 495-502
Mechanics of materials, 37(2), 331-341
[30] Mcdowell D L and Story T L (1998) New Directions In Materials Design Science And Engineering
Computational Materials Science, 46(2), 447-451

Table 1 Chemical compositions of base materials.
Journal of Materials Science 2008; 43(9): 3296—3304
Materials and Design 2010 ;3324–3330
Metallurgical and Materials Transactions, Progress Science Journals 2004; 35B(4) :777
The formation mechanism of the friction stir welds, Materials Science and Technology Conference and Exhibition.

Acknowledgement This work is supported by foundation of wenzhou science and technology bureau (H20080051), and supported by Natural Science Foundation of Zhejiang Province of China.
Minak: Journal of Testing and Evaluation Vol. 2(2007), p.1-8 [2] J.
Ian: Journal of the Structural Division Vol.12(1989), p.2657-2675 [4] Y.
Wan: Journal of Information & Computational Science Vol.5 (2008), p.1085-1091 [5] Y.
Wan: Journal of Information & Computational Science Vol.5 (2008), p.1813-1818 [6] Y.

The presented work deals with materials consisting of circular particles within a matrix.
Second-order computational homogenization of heterogeneous materials with periodic microstructure.
Computational materials science, 2008, 42(2): 352-367.
Science, 2003, 301.5641: 911-914.
Quantitative description of the morphology and microdamage of composite materials.

Properties of Piezoelectric Materials Measuring Equation.
Acknowledgements These studies are supported by the National Nature Science Found, whose number is 51775220.
Journal of Mechanics Design, Vol.22 -1(1999), p.37-41 (In Chinese) [2] Baoqi Tao, Smart Material Structure(National Defense Publishing house,China,1999), pp.131-160(In Chinese) [3] V.
Piefort, N. loix, Journal of Materials and Mechanical Testing, Vol.29-4(2004), p.102-128
Journal of intelligent material and structure, Vol.25 -3(2006),p.88-106.

The very old use of textile materials is production of fabric bags.
Textile Research Journal, June 1995, vol. 65, no. 6 324-330, ISSN: 0040-5175
International Journal of Impact Engineering.
International Journal of Engineering Science, Volume 38, Issue 17, November 2000, Pages 1895-1906, ISSN: 0020-7225
International Journal of Engineering Science, Volume 39, Issue 1, January 2001, Pages 1-13, ISSN: 0020-7225

Introduction Today, one of the main tasks in the field of the development of silicate materials is the creation of effective heat-insulating building materials and the reduction of their cost.
The use of local regional natural raw materials in the development of technologies for producing silicate materials will reduce the cost of the final product and increase the raw material base for the production of silicates [1-6].
Lu et al., Preparation of sintered foam materials by alkali-activated coal fly ash, Journal of Hazardous Materials. 174 (2010) 108-112
Ryabova, Complex Protection of Pipelines Using Silicate Materials Based on Local Raw Materials of the Far East, Materials Science Forum. 945 (2019) 46-52
Demidovich, Foamglass, Science and Technology, Minsk, 1975.