Unique glass formation and mechanical properties of zr cu based alloys
Unique glass formation and mechanical properties of zr cu based alloys
... Table 1. 2 Possible application fields for BMGs .5 Table 2. 1 Mechanical properties of Zr4 8. 5Cu5 1.5, Zr5 1Cu4 9, Zr4 9. 5Cu5 0.5, and Zr4 9Cu5 1 as‐cast alloys, with various volume fraction of ZrCu martensite in the amorphous ... Figure 2. 6 The engineering compressive stress‐strain curves of Zr Cu amorphous matrix composites with varied volume fraction of ZrCu martensite. A‐ Zr4 8. 5Cu5 1.5 and B‐ Zr5 1Cu4 9 alloy with fully amorphous structure; C‐ Zr4 9. 5Cu5 0.5 ... Summary of the measured mechanical properties of orthogonal Zr5 1Cu4 9, Zr4 8Cu4 5Al7 and (Zr4 8Cu4 5Al7)98Y2 BMG specimens under compression testing 64 Table 3. 2 Summary of the Weibull moduli for various materials...
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Glass formation and magnetic properties of ternary fe b y nd and quaternary fe b nd nb alloys
... spectra for 1.5 mm as-cast alloys: (Fe7< /b> 4B2 3Nd3 )9 6Nb4 (a), (Fe6< /b> 5. 5B3 1Nd3 .5)9 6Nb4 (b) , (Fe5< /b> 9B3 1Nd1 0)9 6Nb4 (c), (Fe6< /b> 7B2 3Nd1 0)9 6Nb4 (d), (Fe7< /b> 1B2 1Nd8 )9 6Nb4 (e) and < /b> (Fe6< /b> 8B2 5Nd7 )9 6Nb4 (4 mm) (f) 104 ... curves for 1.5 mm as-cast alloys: (Fe7< /b> 4B2 3Nd3 )9 6Nb4 (a), (Fe6< /b> 5. 5B3 1Nd3 .5)9 6Nb4 (b) , (Fe5< /b> 9B3 1Nd1 0)9 6Nb4 (c), (Fe6< /b> 7B2 3Nd1 0)9 6Nb4 (d), (Fe7< /b> 1B2 1Nd8 )9 6Nb4 (e) and < /b> (Fe6< /b> 8B2 5Nd7 )9 6Nb4 (4 mm) (f) 104 ... SEM micrographs of < /b> 1.5 mm ascast rods: (Fe7< /b> 4B2 3Nd3 )9 6Nb4 (a), (Fe6< /b> 5. 5B3 1Nd3 .5)9 6Nb4 (b) , (Fe5< /b> 9B3 1Nd1 0)9 6Nb4 (c), (Fe6< /b> 7B2 3Nd1 0)9 6Nb4 (d), (Fe7< /b> 1B2 1Nd8 )9 6Nb4 (e) and < /b> (Fe6< /b> 8B2 5Nd7 )9 6Nb4 (4 mm) (f) ...
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Tài liệu PHYSICAL, CHEMICAL, AND MECHANICAL PROPERTIES OF BAMBOO AND ITS UTILIZATION POTENTIAL FOR FIBERBOARD MANUFACTURING docx
... performance characteristics and mechanical properties of bamboo Dissertation, Chinese Academy of Forestry, Beijing, China pp 147 Yusoff, M.N.M, A Abd.Kadir, and A.H Mohamed 1992 Utilization of bamboo ... the physical properties of pulp [Tamolong 1967; Zamuco et al 1969] Aging of a bamboo culm influences physical, chemical, and mechanical properties, and consequently its processing and utilization ... utilization The physical and mechanical properties of bamboo vary with the age of the bamboo and the height of the culm [Chauhan 2000] In general, SG and the properties of bamboo drop from the top...
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Báo cáo hóa học: " Synthesis and magnetic properties of Zr doped ZnO Nanoparticles" docx
... http://www.nanoscalereslett.com/content/6/1/587 Page of Figure TEM and HRTEM images of Zn0.99 5Zr0 .005O Nps (a) The representative TEM image of Zn0.99 5Zr0 .005O and the inset is the SAED pattern (b) The HRTEM image of Zn0.99 5Zr0 .005O hysteresis ... of Zr Furthermore, the magnetism of the samples depends strongly on the doping Zr content, and Ms per Zr atom decreases monotonously from 0.0089 μ B /Zr (Zn 0.995 Zr 0.005 O) to 0.0013 μ B /Zr ... content of Zr, and decreases continuously as the increase of the doping Zr content through the magnetic measurement at RT Combining with the results of Raman and XPS, we suppose that the FM of the...
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Báo cáo vật lý: "Comparison of the Effects of Organoclay Loading on the Curing and Mechanical Properties of Organoclay-Filled Epoxidised Natural Rubber Nanocomposites and Organoclay-Filled Natural Rubber Nanocomposites" pot
... 2009 39 Therefore, the major aim of this work was to compare the curing characteristics and mechanical properties of organoclay- filled epoxidised natural rubber (ENR 50) nanocomposites and organoclay- filled ... agglomeration of organoclays All these observations are in concordance with the XRD patterns and confirmed a better dispersion of the organoclay in the case of ENR 50 Figure 15: TEM micrograph for phr organoclay- filled ... 5°C The various rubber additives were added to the masticated natural rubber prior to the addition of organoclay, and sulphur was added last The organoclay rubber nanocomposites were conditioned...
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Báo cáo lâm nghiệp: "Comparison of physical and mechanical properties of tension and opposite wood from ten tropical rainforest trees from different species" pptx
... al Table I Radius and Growth Strains (×10−6 ) mean value of tension wood and opposite wood zone from the ten studied trees Family Genus species author Radius of TW zone Radius of OW zone GS mean ... positions and were tension wood Mean values for tension wood properties were obtained from specimen corresponding to these 8, 1, positions (8, for Qualea rosea Aubl.) Positions and often called ... predominant tendency; sometimes tension wood is more resistant, sometimes opposite wood is more resistant Longitudinal shrinkage was often the most significantly different property between tension and opposite...
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Báo cáo lâm nghiệp: "End-use related physical and mechanical properties of selected fast-growing poplar hybrids (Populus trichocarpa × P. deltoides)" potx
... evaluate the variability in selected physical and mechanical properties of new inter-American poplar clones (P trichocarpa × deltoides) As poplar plantations are a local source of wood which take away ... End-use related properties of poplar wood 627 Table VI Density (kg/m3 ), modulus of elasticity and modulus of rupture (N/mm2 ) for a 7-layer plywood for each of the selected clones Beaupré Density of ... Selected mechanical properties of fast-growing poplar hybrid clones, Wood Fiber Sci 30 (1998) 138–147 [20] Rijsdijk J.F., Laming P.B., Physical and related properties of 145 timbers, Kluwer academic...
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Báo cáo khoa học: "Natural durability, physical and mechanical properties of Atlas cedar (Cedrus atlantica Manetti) wood from Southern Italy" ppsx
... obtained from each tree were uniform The results of physical and mechanical characterisation of Atlas cedar wood from Southern Italy are summarised on table IV Table V refers about physical and mechanical ... compression strength and the bending MOE, the Atlas cedar wood is on average strong and yielding DISCUSSION AND CONCLUSIONS As for all the softwood species, the sapwood of Atlas cedar wood showed a ... efficiency of the Atlas cedar wood is high, compared to that of the most utilised softwood species for structural purposes From first trials the Atlas cedar wood seems to be suitable for packing and...
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Materials Science and Engineering - Electronic and Mechanical Properties of Materials Part 1 doc
... Fitzgerald -1 9 99 14 Extracting Typical τ for Metals • τ ~1 0 -1 4 sec for metals in Drude model 3.225 © E.A Fitzgerald -1 9 99 15 Thermal Velocity • So far we have discussed drift velocity vD and scattering ... independent of magnitude of L and W Useful for working with films of thickness, t R R R 3.225 © H.L Tuller-20 01 17 How to Make Resistance Measurements Rc2 I Rc1 Rs V V/I = Rc1 + Rs + Rc2 I For Rs >> Rc1 ... © H.L Tuller-20 01 Origin of Conduction Range of Resistivity Why? 3.225 © E.A Fitzgerald -1 9 99 Response of Material to Applied Potential I I V V=f(I) Rectification, Non-linear, Non-Ohmic R Linear,...
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Materials Science and Engineering - Electronic and Mechanical Properties of Materials Part 5 ppt
... For Si, Eg=1.1eV, and let µe and µh be approximately equal at 1000cm2/V-sec (very good Si!) σ~1010cm-3*1.602x1 0-1 9*1000cm2/V-sec=1.6x1 0-6 S/m, or a resistivity ρ of about 106 ohm-m max • • One important ... atoms per cm-3 – n~10 15, p~1020/10 15~ 1 05 σ/σi~(p+n)/2ni~n/2ni~1 05! Impurities at the ppm level drastically change the conductivity ( 5- 6 orders of magnitude) 3.2 25 © E Fitzgerald-1999 18 Expected ... issue for system-on-chip applications 3.2 25 © E Fitzgerald-1999 15 Extrinsic Semiconductors • • Adding ‘correct’ impurities can lead to controlled domination of one carrier type – n-type is dominated...
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Materials Science and Engineering - Electronic and Mechanical Properties of Materials Part 10 pps
... conductivity: σ = 4.4 10 -1 8 S cm-1 T [°C] 900 -4 800 700 600 500 10 Y-cut -5 -1 σ [S cm ] 10 -1 σ0 = 2.1 S cm EA = 105 kJ mol -6 10 -1 -7 10 3.225 10 11 10 /T [1/K] 12 13 © H.L Tuller-2001 26 13 ... Substrate: Si wafer 20 40 60 80 110 100 90 80 70 60 50 40 30 20 10 -1 0 110 100 90 80 70 60 50 40 30 20 10 -1 0 20 MFC2 Feuchte Temp CO 40 NO2 NO2kl 60 NH3 H2 Pt -1 00 resistance / Ω • Electrode: ... Tuller-2001 18 Photo Electro-chemical Etching - PEC • Electro-chemical etching h+ h+ h+ h+ semiconductor Light source • Photo electro chemical etching electrolyte h+ + - h+semiconductor + - n-type...
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Materials Science and Engineering - Electronic and Mechanical Properties of Materials Part 9 pps
... Tuller-2001 Influence of Dopants on Electrical Conductivity of SrTiO3 log(σ / (Ωcm )-1 ) λ 0 .99 5 1,005 T = 800 °C no -1 ac -2 ce pto -3 rd op rd op ed ed -4 Sr2+ Ti4+ O 2-3 -5 acceptor donor -2 0 -1 6 ... Versatility High Strain (Pb0 .98 La0.02(Zr0.7Hf0.3)1-xTixO3 AFE FE System (C Heremans and H.L Tuller, J Euro Ceram Soc., 19, 11 39 ( 199 9).) Atmosphere dependent conductivity (I Kosacki and H.L Tuller, Sensors ... SrTiO3 Sr(Ti0,65Fe0,35)O3 m = 0,2 95 0°C 90 0°C 0,1 Response times T / °C t90 / ms 90 0 6.5 800 26 750 83 185 700 850°C 800°C 750°C 1 0-2 0 1 0-1 5 1 0-1 0 pO2 / bar 3.225 1 0-5 100 [1] Menesklou et al, MRS...
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Materials Science and Engineering - Electronic and Mechanical Properties of Materials Part 3 pot
... are discrete 3. 225 © E Fitzgerald-1999 24 12 Representation of E,k for 1-D Material E= states electrons h 2k p = 2m 2m E EF All e- in box accounted for m=+1/2 ,-1 /2 En+1 En En-1 Quasi-continuous ... k y ) E(kx,ky) 2m ky kx 3. 225 © E Fitzgerald-1999 Representation of E,k for 3- D Material kz Ε(kx,ky,kz) ky kF E= m π2 2mE h3 Fermi Surface or Fermi Sphere k F = (3 n )3 vF = 2m kx 2π/L g (E) ... 1 0-8 cm in size • Electron waves in solid are λ=h/p~1 0-8 cm in size • Certain wavelengths of valence electrons will diffract! 3. 225 © E Fitzgerald-1999 Diffraction Picture of the Origin of Band...
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Materials Science and Engineering - Electronic and Mechanical Properties of Materials Part 6 pps
... when you join these together? 3.225 © E Fitzgerald-1999 11 Drift and Diffusion - - - - - + + + + + + + + Holes diffuse Electrons diffuse - - - - - - + + + + E + + + + An electric field forms due ... force of diffusion until EF is flat - - + + + + Holes diffuse Electrons diffuse 3.225 © E Fitzgerald-1999 13 Space Charge, Electric Field and Potential - - - - - - + + + + xp + + + + Metallurgical ... Devices 3.225 The p-n Junction (The Diode) • Note that dopants move the fermi energy from mid-gap towards either the valence band edge (p-type) or the conduction band edge (n-type) n-type material...
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Materials Science and Engineering - Electronic and Mechanical Properties of Materials Part 8 pdf
... of positive and negative ions 3.225 © E Fitzgerald-1999 © H.L Tuller, 2001 Ferroelectrics Applications • Capacitors • Non-volatile memories • Photorefractive materials 3.225 Characteristics of ... τ=9.5x1 0-1 1 sec, ω~1010 microwave oven, transmission of E-M waves 3.225 © E Fitzgerald-1999 19 Dielectric Constant vs Frequency • Completely general ε due to the localized charge in materials ... Optical Fiber 3.225 © E Fitzgerald-1999 © E Fitzgerald-1999 Characteristics of Optical Fiber 3.225 Colors Produced by Chromium Above: alexandrite, emerald, and ruby Center: carbonate, chloride,...
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