mechanical structural and color properties

... morphology, porosity and the thermal properties The correlation between aluminum proportions in CrAlN coatings and his thermal properties revealed that the conductivity and the diffusivity are ... the microstructure and the thermal properties is investigated 3 Micro-structural characterization and morphological The growth of the layer begins with the arrival of aluminum and chromium atoms ... www.elsevier.com/locate/XXX Proceedings of the JMSM 2008 Conference Experimental investigation of the mechanical micro structural and thermal properties of thin CrAIN layers deposited by PVD technique for various aluminum

Ngày tải lên: 02/11/2022, 10:39

... Trang 1Structural and Dielectric Properties of the Mn-Doped BaO-Nd2O3-4TiO2 System Srimala Sreekantan*, Chong Tun Shin and Ahmad Fauzi Mohd Noor School of Materials and Mineral Resources ... a major phase, BaNd 2 Ti 5 O 14 , with some secondary phases, Nd 2 Ti 2 O 7 and BaTi 4 O 9 The formation of the secondary phases affects the density, dielectric properties and quality factor ... standard BaNd2Ti5O14, ICDD No 33–136 The lattice parameters of the XRD show a = 12.20 Å, b = 22.35 Å and c = 3.84 Å However, detailed observation shows the presence of extra peaks in MBN0.5T4 and

Ngày tải lên: 07/08/2014, 14:20

... of access and use can be found at http://www.tandfonline.com/page/termsand-conditions Journal of Experimental Nanoscience Vol 4, No 3, September 2009, 259–267 Structural and magnetic properties ... Publication details, including instructions for authors and subscription information: http://www.tandfonline.com/loi/tjen20 Structural and magnetic properties of starch-coated magnetite nanoparticles ... exhibits only three bands at 330, 530 and 670 cmÀ1 This is in good corresponding to the T2g, Eg and A1g Raman bands reported for magnetite by de Faria et al [12] This means that -Fe2O3 and -Fe2O3 are

Ngày tải lên: 16/12/2017, 00:01

... CdSe/CdTe/ZnS QDs were purified and dissolved in toluene for studying the structural and optical properties afterwards Characterizations To study the optical properties, Ultraviolet–visible ... which both the conduction and valence bands of one component lie lower in energy than the corresponding bands of the other component [5, 6] Type-II QDs have an effective bandgap energy that is smaller ... electrons and holes between the core and shell layers The type-II CdTe/CdSe core/shell QDs have emission wavelengths in the visible region and can change in a very wide range when changing core size and

Ngày tải lên: 27/09/2020, 17:48

... rocking curves and obtain smooth surfaces Unlike the polar (0001) plane, non-polar and semi-polar planes have low crystal symmetries, which cause the semi-polar and non-polar GaN and InGaN/GaN ... improve the microstructural quality of (11–22) GaN In Fig. 4(b), the FWHMs of the off-axis (10–10) (20–20) and (30–30) peaks decreased by approximately 32%, 46% and 86% from 0.78°, 0.58° and 0.51° to ... the GaN/AlN buffer layer/sapphire region GaN and AlN spots are the strongest ones and are indexed in white and green whereas sapphire spots are weaker and indexed in red The < 0001> III-nitride

Ngày tải lên: 19/11/2022, 11:48

... of oxygen vacancies on the structural and optical properties Linpeng Dong, Renxu Jia, Bin Xin, Bo Peng & Yuming Zhang The structural, electronic, and optical properties of β-Ga 2 O 3 with ... investigated in the past years, and the results can vary with different functionals and approximation methods12–14 Up to now, few studies of the effects on the structural and optical properties caused by ... hybrid density functionals and also can give an accurate description by controlling the Hubbard U parameter27,28 Results and Discussion Structural properties Monoclinic structural β -Ga2O3 with

Ngày tải lên: 24/11/2022, 17:43

... occupied vanlence band and lowest unoccupied conduction band at Г point All 1D subbands are asymmetric from the Fermi level, and they belong to the anti-crossing weakly dispersed bands Different ... electronic band structures and density of states, charge density, and charge density difference Under hydrogen functionalization, the functionalization energy is achieved around -2.59 eV, and the structural ... the bandgaps of GeNRs strongly depend on its widths, and the different edge configurations exhibit different electronic and magnetic behaviors The AGeNR presents the direct bandgap at band-edge

Ngày tải lên: 31/12/2022, 12:14

... exchange and hybridization also occurs here This is shown in the band and DOS structures in the presence of adsorption and unadsorption However, based on the calculation results and the band structure ... ES – EM – EP (1) where EM, EP and ES are the total energy of Pr atom metal, Pristine, and Pr adsorbed on Pristine [14] 3 Results and discussions 3.1 Structural properties Building a survey ... approach and the local spin-density approximation, examine the structural and electrical properties of zigzag silicene nanoribbons (ZSiNRs) with edge-chemistry changed by H, F, OH, and O Three

Ngày tải lên: 31/12/2022, 12:23

... desired biological, physical, and mechanical properties Hydroxyapatite and its composites are of interest due to applications in medicine The physicochemical properties and biocompatibility make ... bands of the hydroxyl, ether, andcarboxylic groups, as well as the O–H and C–H stretching be attributed to the asymmetric and symmetric stretching vibrations of carboxylate salt ions These bands ... (b) nHAp/Pectin, and (c) nHAp/SA and nHAp/Agar Trang 8Fig 6 DTG (broken curve) and TG (continuous curve) for initial PS and nHAp/PS composites a Initial chitosan, sodium alginate, and agar b nHAp/

Ngày tải lên: 19/03/2023, 15:21

... t u b i t a k g o v t r / c h e m / Research Article Experimental and theoretical approaches for structural and mechanical properties of novel side chain LCP-PP graft coproducts Sedat C ¸ ET˙IN1, ... bands at about 2357 and 2311 cm−1, and was observed almost in all stages of the decompositions The spectra, most of the bands of which were commonly observed in both polymers, indicated a band ... vibrations, the formation and assignment of which were reported in a similar analysis,30 and bands at about 1606 and 1510 cm−1 seemingly due to aromatic C=C stretching vibrations The bands at about Trang

Ngày tải lên: 13/01/2022, 00:03

... SBR matrix and SBS gels were mixed with NR at a given concentration, to investigate their effect on the morphol-ogy, mechanical, dynamic mechanical and thermal properties of raw SBR and NR Morphology ... NS3and SBS3gels have been shown as representative systems The particle diameters in Fig 1 Particle size distribution by DLS method for a SBR and SBS gels and b NR and NS gels Table 2 Various properties ... crosslinked nanogels and quasi-nanogels has revealed that addition of these gels leads to a considerable improvement in processability, mechanical, and dynamic mechanical properties of virgin

Ngày tải lên: 22/06/2014, 01:20

... of Treated and Untreated Filler Loading on the Mechanical, Morphological, and Water Absorption Properties of Water Hyacinth Fibers- Low Density Polyethylene Composites Supri A G and B Y Lim ... The addition of fillers into a polymer will affect the mechanical, thermal, and water absorbent properties of the composite In addition, the properties of the composite will be unlike those of the ... by increasing the polymer content Roshafima and Wan Aizan reported that the addition of starch into LDPE both decreased the mechanical properties and improved the biodegrade-bility of their composite.5

Ngày tải lên: 07/08/2014, 14:20

... Trang 1Applied Structural and Mechanical VibrationsCopyright © 2003 Taylor & Francis Group LLC Trang 2Applied Structural and Mechanical VibrationsTheory, methods and measuring instrumentation ... Applied structural and mechanical vibrations: theory, methods, and measuring instrumentation/Paolo L.Gatti and Vittorio Ferrari. p cm. Includes bibliographical reference and index. 1 Structural ... patience andunderstanding, my parents Paolina and Remo, and to my grandmother Maria Margherita (Paolo L.Gatti) To my wife and parents (V.Ferrari) Trang 51.2 The role of modelling (linear and nonlinear,

Ngày tải lên: 10/08/2014, 20:20

... i=j, the left-hand side of eqs (6.34) and (6. 35) is different from zero and we can write (6.36) where the scalars Mii and Kii are called the modal or generalized mass and the modal or ... equations (5.76a) and (5.89) are the same if we define (5.90a) and (5.90b) In this light, note that the functions F( ω ) and X( ω ) are the Fourier transforms of the functions f(t) and x(t), respectively, ... we obtain explicitly the right-hand side of eq (5.76a) for our viscously damped SDOF system. Then, the left hand-side can be obtained by virtue of eq (5.5) and it can be determined immediately

Ngày tải lên: 10/08/2014, 20:20

... generally conservative and that a better bound can be obtained if both A and the perturbing matrices are Hermitian (The interested reader is referred to Horn and Johnson [1] andJunkins and Kim [2].) 6.4.1 ... or180° and real numbers suffice for a complete description 6.5 Structure and properties of matrices M, K and C: a few considerations A fundamental part of the analysis of MDOF systems—and of ... conditionsThe conditions of eqs (6.42b) and (6.44) are only a particular case of a broader class of othogonality properties involving the eigenvectors pi and the matrices M and K If pi is an eigenvector,

Ngày tải lên: 10/08/2014, 20:20

... mathematical properties of the real and imaginary parts of an FRF and means that if we know H Re ( ω ), we can compute H Im ( ω ) and vice versa. The explicit relations between H Re and H Im can ... right-hand side of eqs (7. 59a) and (7. 59b) and in a term Mii in the denominator of the second sum Equations (7. 59a) and (7. 59b) are, respectively, the counterpart of eqs (7. 34b) and ... or –90°) and determine completely the first eigenvector. The same procedure for ω 2 Copyright © 2003 Taylor & Francis Group LLC and ω 3 leads, respectively, to p 2 and p 3 and, since

Ngày tải lên: 10/08/2014, 20:20

... ‘catenary’ and generally have a sag-to-span ratio between 0.02 and 0.05) and may show considerable discrepanciescompared to the string model In particular, the natural frequencies and modeshapes ... unit volume, L0=half-span length)and on the sag-to-span ratio The interested reader may refer, for example, to Nariboli and McConnell [3] and Irvine [4] 8.4 Axial and torsional vibrations of rods ... both cases (8.42) and (8.45) and the parameter γ2 is equal to ω2ρ/E for the first of eqs (8.46) and to ω2ρ/G for the second. Again, in order to obtain the natural frequencies and modes of vibrations

Ngày tải lên: 10/08/2014, 20:20

... referring, forexample, to DOFs 1 and 2 for the measurements at point 1 and 2, respectively, along the x direction and to DOFs 3 and 4 for the measurements at points 1 and 2 along the y direction With ... computers allows the analysis and thesolution of complex structural dynamics problems On the other hand, thispossibility may give the analyst a feeling of exactness and objectivity which is, to ... the Rayleigh and Rayleigh-Ritzmethods, which are both based on the mathematical properties of the Rayleighquotient (Sections 9.2 and 9.2.1)—a concept that pervades all branches ofstructural dynamics

Ngày tải lên: 10/08/2014, 20:20

... functions result in narrow-band and wide-band processes.Broadly speaking, a narrow-band process has a spectral density which isvery small except within a narrow band of frequencies: i.e except ... ‘stochastic’ is synonymous with ‘random’ and the two terms can be usedinterchangeably Now, if we refer back to the preceding chapter, it can be noted that theconcepts of event and random variable can be ... using a set of software-generated random numbers Also note that a random process can develop in both time and space:consider for example the vibration of a tall and slender structure under theaction

Ngày tải lên: 10/08/2014, 20:20

... the concept of spectral density, whose definition and properties arethe subject of Section 12.3, and to the notions of narrow-band and wide-band random processes Then, with all the above results ... Bendat, J.S and Piersol, A.G., Random Data—Analysis and Measurement Procedures, 2nd edn, John Wiley, New York, 1986. 5 Lutes, L.D and Sarkani, S., Stochastic Analysis of Structural and Mechanical ... Structures with Random Properties Subject to Stationary Random Excitation, Ph.D. Dissertation, Princeton University, Jan 1995. 8 Newland, D.E., An Introduction to Random Vibrations, Spectral and Wavelet

Ngày tải lên: 10/08/2014, 20:20