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Synthesis and Characterization of Fluorine-Substituted Hydroxyapatite Powder by Polyacrylamide-gel Method Yan Luo1, a, Wenxu Li1, b, Fuping Wang2, c and Jing Zou1 1 Department of Chemistry, Harbin Institute of Technology, Harbin, 150001, China 2 School of Chemical Engineering &Technology, Harbin Institute of Technology, Harbin, 150001, China aluoyanchuangxin@126.com, bliwx@hit.edu.cn, cfupingwang@hit.edu.cn keywords: Fluor-hydroxyapatite (FHA), Polyacrylamide-gel Method, Lattice Parameters, Thermal Stability.
Jing: Bulletin of the Chinese Ceramic Society.
Zeng: Materials Science and Engineering.
Miao: Ceramic International.
Xu: Journal of Biomedical Engineering.

Special Repair Materials and Influence of Aggressive Environment on their Properties MÉSZÁROSOVÁ Lenka 1,a*, TŮMOVÁ Eva 1,b, DUFKA Ámos 1,c and DROCHYTKA Rostislav 1,d 1Brno University of Technology, Faculty of Civil Engineering, Veveří 95, 602 00 Brno, Czech Republic including country ameszarosova.l@fce.vutbr.cz, btumova.e@fce.vutbr.cz, cdufka.a@fce.vutbr.cz, ddrochytka.r@fce.vutbr.cz Keywords: geopolymers, repair mortars, polymer concrete.
Fig. 1 - History of geopolymers Kinds of geopolymers Geopolymers can be divided according to the different points of view by their cross linking character for example by J.A.Davidovits, how can be seen on Fig. 2: · 3D network – bricks, ceramics, fire protection, low CO2 cements and concretes, radioactive and toxic waste encapsulation · Polymeric character – Fire protection (fiber glass composite), heat resistant composites (from 200°C to 1000°C), sealants for industry from 200°C to 600°C, toolings for SPF aluminum · 2D network – fire resistant and heat resistant fiber composites Fig. 2: Kinds of Geopolymers Influence of aggressive environment on repair material The determination of the impact of the corrosive environment is focused on the comparison of the parameters of samples exposed to aggressive environments with reference samples.
Industrial and Engineering Chemistry Research 38. 1999. pp. 3932 – 3941, [3] Chao L.i, Henghu S., Longtu L.: A review: The comparison between alkali-activated slag (Si+Ca) and metakaolin (Si+Al) cements, Cement and Concrete Research Vol. 40, Issue 9, September 2010, p.1341-1349, http://www.sciencedirect.com/, [4] Barbosa V.F.F., MacKenzie, K.J.D., Thaumaturago, C.: Synthesis and characterization of materials based on inorganic polymers of alumina and silica: sodium polysialate polymers.
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Since its birth in 1960s, rotary ultrasonic machining has been applied to machine many types of materials (such as glass, engineering ceramics, silicon carbide, and titanium).
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Ferreira: International Journal of Machine Tools and Manufacture Vol. 39 (1999), p. 1327-1344

Introduction Due to good physical properties, ceramics has been applied to diverse engineering fields.
However the brittleness of ceramics limits their application.
Therefore toughening of ceramics has been being asubject of study.
Huang, Q.S.Yang, C.Z.Zhang: Dynamic crack propagation in matrix involving inclusions by a time-domain BEM, Engineering Analysis With Boundary ElementsVol.36(2012), p. 651-657
Gray:SGBEM analysis of crack-particle(s) interactions due to elastic constants mismatch, Engineering Fracture Mechanics Vol. 74 (2007), p.314

The samples were irradiated by the β-ray irradiation equipment offered by Nuclear Physics and Chemistry, Chinese Academy of Engineering Physics and the cumulative dose of irradiation was 106Gy. 2.4.
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It is noteworthy that UAT is regarded as an advanced machining technique which is especially suitable for machining of brittle and hard-to-cut materials such as glass, ceramics and super alloys.
Poo, Error compensation in machine tools — a review Part I: geometric, cutting-force induced and fixture dependent Errors, International Journal of Machine Tools & Manufacture 40 (2000) 1235–1256 [2] Jingxia Yuan, Jun Ni, The real-time error compensation CNC machining systems, Mechatronics 8 (1998) 359-380 [3] P.G.
Tsao, A stability analysis of turning a tailstock supported flexible work-piece, International Journal of Machine Tools & Manufacture 46 (2006) 18–25 [7] Guo Jianliang, Han Rongdi, “A united model of diametral error in slender bar turning with a follower rest”, International Journal of Machine Tools & Manufacture 46 (2006) 1002–1012 [8] S Amini, M J Nategh, and H Soleimanimehr, Application of design of experiements for modeling surface roughness in ultrasonic vibration turning, Proc.
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Sadeghi, FEM Analysis of Ultrasonic-Vibration-Assisted Turning and the Vibratory Tool, Journal of Materials Processing Technology, Vol. 201 (2008) 43-47

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Gerday: Journal of the European Ceramic Society Vol. 25(2005), p. 1159 [4] Youtao Xie, Xuanyong Liu, Chuanxian Ding and Paul K.
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Marple: Journal of Thermal Spray Technology Vol. 16(2007), p. 40 [9] Wean Sin Cheow, Selina Li, Kunn Hadinoto: Chemical Engineering Research and Design Vol. 88(2010), p. 673 [10] Bertrand Faure, Jesper Sæderup Lindeløv, Michael Wahlberg, Nicholas Adkins, Phil Jackson and Lennart Bergström: Powder Technology Vol. 203(2010), p. 384 [11] Izumi Taniguchi, Norifumi Fukuda, Muxina Konarova: Powder Technology Vol. 181(2008), p. 228 [12] Xiaoyi Shen, Yuchun Zhai, Yang Sun and Huimin Gu: Journal of Materials Science & Technology Vol.26(2010), p. 711 [13] Tian-zu YANG, Zuo-juan DU, Ying-ying GU, Xiao-yong QIU, Ming-xi JIANG and Guang CHU: Transactions of Nonferrous Metals Society of China Vol. 17(2007), p. 434 [14] Y.B Khollam, S.R Dhage, H.S Potdar, S.B Deshpande, P.P Bakare, S.D Kulkarni and S.K Date: Materials Letters Vol. 56(2002), p. 571 [15] S.
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High energy mechanical milling (i.e. intense milling of metal powders wet or dry, occasionally with additives) is a well known production route to form different types of nanomaterials and nanocomposites (metal-metal, metal-ceramic etc.) [5, 6].
Traditional ceramics technology High-energy ball milling Remark: Greenbody forming in an appropriate magnetic field was a new possibility in course of the experiments.
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For elimnating the effects of structural changes of porous media on flame stabilization, the burner is filled by the unifirm Al2O3 ceramic foam with an porous density N = 20 ppi and Fig. 1 Physical model of porous burner porosityε= 0.85.
The thermal parameters of Al2O3 ceramic foam are shown in the Table 1.
Based on the Fluent softeware, the thermal parameters of Al2O3 ceramic foam in Table 1 were introduced by user-defined program.
Journal of Chemical Industry and Engineering, , 63( 2012): P.1893
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