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Fe-Al-Si Alloys for Applications in Internal Combustion Engines NOVÁK Pavel1,a*, Rieszová Lenka1,b, NOVÁ Kateřina1,c, Průša Filip1,d 1Department of Metals and Corrosion Engineering, University of Chemistry and Technology, Prague, Technická 5, 166 28 Prague 6, Czech Republic apanovak@vscht.cz, brieszovl@vscht.cz, cnovakx@vscht.cz, dprusaf@vscht.cz *corresponding author Keywords: intermetallics; combustion engine; oxidation Abstract.
The effect of silicon on the structure of Fe-40 at.% Al type alloys with high contents of carbon (1.9–3.8at.%).
Structure and Properties of Fe-Al-Si Alloy Prepared by Mechanical Alloying.

Tungsten Carbide Dispersed High Cr-Ni Cast Iron Produced by Plasma Spraying Yasuhiro Hoshiyama1, a *, Kyouhei Yamaguchi2, b and Hidekazu Miyake1, c 1Department of Chemistry and Materials Engineering, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka 564-8680, JAPAN 2Graduate School of Science and Engineering, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka 564-8680, JAPAN ahosiyama@kansai-u.ac.jp, bk227931@kansai-u.ac.jp, cv651093@kansai-u.ac.jp Keywords: Plasma spray, Tungsten carbide, Rapid solidification, High Cr-Ni cast iron, Particles.
In this study, high Cr–Ni cast iron alloy powder was plasma-sprayed at low pressure to produce rapidly solidified high Cr–Ni cast iron base deposits containing tungsten carbide particles; the structures and mechanical properties of the deposits were then examined.
These as-sprayed deposits had a lamellar structure, which resulted from the successive impingement and spreading of the sprayed droplets.

The crystal structures, particle sizes and surface structures of TiO2•SiO2 films were characterized XRD, Scherrer's equation and SEM.
Yin, Materials Chemistry & Physics, Vol.92 (2005), p.10 [3] C.

Alpha Alloys Alpha titanium is thermodynamically stable at low temperatures and has a hexagonal close packed (HCP) crystal structure.
Beta Alloys Beta titanium has a BCC crystal structure and is metastable at low temperatures.
In a study by Ramesh et al. creep deformation products in a single phase beta Ti-14.8wt%V alloy, the same chemistry as the beta phase of the Ti-08.1wt%V alloy, were {}332 type twins [12].

This Raman analysis results confirms that counter surface transfer layer is highly disordered [13], this disordered structure is graphitic and it is well known that graphite is a layer by layer structure and between each layer there is a weak Vander walls force, which help in facilitating easy slip among the layers, as a result, better lubrication is achieved and coefficient of friction goes down.
Fox, Chemistry and technology of lubricants, Springer, 1992

They found that it was critical step to control decomposing condition of MgCO3•3H2O, for maintaining the crystal structure of MgCO3•3H2O and MgO whisker.
The variation of precursor in morphology and structure influenced by aging time is probably related to the recrystallized process of MgCO3[17].When precipitation appear, it contains unstable particles and also stable crystalline particles.
Bao: Inorganic Chemistry Communications. 5 (2) (2002) 147–149

It shows that the heavy metals content is different due to the differences in economic and industrial structure.
The heavy metals content is different due to the differences in economic and industrial structure.
[9] Ligang Wang, Xue Xu, Fan Wang, Fractal characteristics of particle size distribution function of fly ash and its impacts to self adsorption of fly ash, Environmental Chemistry, 27(2) (2008) 215-217

Particle surface chemistry is a dominant factor in the slip casting process because it regulates interparticle attraction and repulsion forces, which in turn, have significant effects on slip rheology, casting rate and green density.
Slips having solids content up to 47.5 vol.% and slower casting rate would give time to the particles to rearrange themselves in a more closely packed structure.
However, the coarse and fine particles in slips having higher solids content than 47.5 vol.% may form flocs which creates more open structure which in turn 2.44 2.46 2.48 2.5 2.52 12 13 14 15 16 17 40 42 44 46 48 50 Density Shrinkage BULK DENSITY (g/cm3) SHRINKAGE (%) SOLID CONTENT (vol. %) Figure 4.

Especially, bio-glass ceramic composition based on 45S5 (46.1SiO2-26.9CaO- 24.4Na2O-2.6P2O5, mol %) by Hench is known as a good advantage in high bioactivity, but it has a limitation such as low chemical durability and mechanical strength due to a open structure of CaO-SiO2 glass system [6].
Each specimen was sintered at temperature with a fully dense structure.
Hamdy, Materials Chemistry and Physics [80] (2003) p. 599-609

Ferroelectric Ceramics Related To BaTiO3 For Z5U Multilayer Capacitors Laldja Taïbi - Benziada Institute of Chemistry, USTHB, P.O.
Results and Discussion The XRD study has shown each ceramic to be single phase with a perovskite derived structure.
and F (1c: fracture, 1d: surface). 1a 1b 1c 1d Fig. 2: Temperature dependences of ε'r and tanδ at various frequencies for sample C. 150 200 250 300 350 400 T (K) 10-3 ε'r 6 4 2 tanδ 0.06 0.04 0.02 ο 10 2 Hz ∆ 10 3 Hz □ 10 4 Hz x 10 5 Hz + 3.105 Hz ο 10 2 Hz ∆ 10 3 Hz □ 10 4 Hz x 10 5 Hz + 3.10 5 Hz 150 200 250 300 350 400 T (K) The broadness of the ε'r maxima is ascribed to the double occupation of Ba, Ti and O positions with ions of different valencies in the perovskite structure