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Structural Aspects Revealed by X-Ray Diffraction for Aluminum Alloys 2024 Type Florina Violeta ANGHELINA1,a*, Ionica IONITA2, Dan Nicolae UNGUREANU1, Elena Valentina STOIAN1,b, Ileana Nicoleta POPESCU1,c, Vasile BRATU1,d, Ivona PETRE1, Carmen POPA1, Alexis NEGREA1 1Department of Materials Engineering, Mechatronics and Robotics, Faculty of Materials Engineering and Mechanics, 2 Faculty of Sciences and Arts, Sciences Department, Valahia University from Targoviste, Aleea Sinaia, No. 13, 130024, Targoviste, Romania a*vianghelina@yahoo.com, belenastoian22@gmail.com, cpinicoleta24@yahoo.com, dv_bratu22@yahoo.com Keywords: The 2024 aluminum alloys, spectrochemical analysis, electron microscopy, X-ray diffraction.
(Eds.), Aerospace Materials and Material Technologies, Springer Science, Singapore, (2017), 29-52
Jawalkar,Suman Kant, A Review on use of Aluminium Alloys in Aircraft Components, i-Manager's Journal on Material Science, 3(3) (2015) 33-38
Earar, XRD and Microstructural analyses on biodegradable Mg alloys, Key Engineering Materials, 638, (2015) 79-84
Redington, The influence of alloy composition on residual stresses in heat treated aluminium alloys, Materials Characterization 105 (2015) 47–55

Rovisco Pais, 1, 1049-001 Lisboa, Portugal 2 Department of Materials Engineering, Instituto Superior Técnico, Av.
The relevant mechanical and thermal properties of all the materials used in this work are shown in Table 1.
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The materials of bellows are chosen very strictly, besides it is required to have high temperature endurance and erosion, it also required have enough stiffness, toughness.
In this study the 316 stainless steel is used for materials of bellows, its trademark is 018Ni10 (or 0Cr17Ni12Mo2).
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A Study on Rust Removal and Inhibition on Surface of Wear Water Screw-thread Steel using Flame Hot Melting Xing Guiju a, Xu Haijiangb, Li Xuekec, Chang Lingd,Wu Xuannane School of Materials & Metallurgy, University of Science and Technology Liaoning, Anshan Zip code 114051, Liaoning Province, P.
The second reason is the humid air and severe environment (acidic materials and salinity) during storage and transportation.
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[7] Tiequn XU, Hongwei LIU, Chuanwei YAN, Chunrong ZHANG, Yufen LI:Materials protection, Vol.41(2008),P.233

However, some carbonaceous materials such as activated carbon are hard to achieve industrial application because of high costs.
So some researchers are committed themselves to find a kind of carbonaceous materials which possess relatively low cost but high NO removal efficiency.
Comparing with other carbonaceous materials, semi-coke exhibits more active and potential.
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Journal of Beijing University of Chemical Technology (natural Science )37(2010) 24

The paper presents the results of experimental research on the wear mechanism of the tool-electrode as a result of machining metal materials by applying electric discharges in pulse.
The following requirements should be followed when designing and developing the tool- electrode [1, 2]: - the material should be as cheap as possible; - the production material will possess high resistance to electro-erosion; - the production material will shape easily to confer necessary forms; - when expensive materials are used, the tool will be bi-component (the body will be made of cheap materials while the active head will be made of expensive material).
The materials for the production of tool- electrodes applied in the research were Cu, steel, titanium, graphite and W + Re(10%).
Technologies of processing conductible materials by applying electric discharges in impulse.
Internet Journal of Engineering and Technology, 2011, Vol. 2, no. 2, issue 1. http://www.i-jet.eu/journal-ijet/c-p-ijet 112.pdf [7] Topala, Pavel, Rusnac, Vladislav, Guzgan, Dorin.

Surperhydrophobic materials have attracted much attention due to their potential applications in microfluidic devices where contact with water is detrimental to performance or durability.
Table 1 Contact angle of surface of the as-fabricated samples (°) samples Contact angle θ/° Average θ/° 1 2 3 4 5 Smooth silicon surface 94.9 96.6 104.9 97.5 102.2 99.2 Microstructure surface 159.6 158.2 156.9 160.4 161.5 159.3 Fig. 3 Photographs of water droplets on the sample surface of (a) the smooth silicon surface, and (b) the square-pillar microstructure silicon surface , (1) Where is the apparent contact angle of the composite surfaces, andare the intrinsic contact angles of two materials, respectively, and and are the fractions of two materials of the compostie surfaces ().
When one of these two materials is air, whose contact angle for water is 180°, eq. (1) are can be transform as follows, , (2) Equations (1) and (2) are the formulaic expressions of Wenzel’s and Cassie’s classical wetting theories.
Acknowledgments This material is based upon work supported by the Natural Science Foundation of Jiangxi Province (No 20122BAB206029), the International Science and Technology Cooperation Project of Jiangxi Province (No. 20121BDH80016).
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Previous studies have shown that nano materials have significant impact to the toughness, wear and corrosion resistance, thermal shock resistance and good machinable property [7-9].
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Hu: Materials Science and Engineering C.

The modulus decay curves (~) of different materials are show in Fig. 2.
Fig. 2 Shear modulus decay curves of materials Table 1 Material parameters Material Filter Transition Rock Core [Mpa] 121.6 199.7 233.6 110.6 0.32 0.33 0.28 0.56 [kPa] 40 25 40 50 [o] 41 40 42 25 [g/cm3] 2.2 2.1 2.2 2.0 0.06 0.06 0.04 0.07 0.6 0.6 0.8 0.1 3 3 5 0.5 Based on seismic hazard analysis, the artificial acceleration time history used in the analysis is shown in Fig. 3.
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