نتایج جستجو برای: annealing temperature

تعداد نتایج: 473032  

2017
Yigao Yuan Lanping Fu Jianpeng Li

In dry machining, the tool-chip interface temperature is a critical factor affecting the engineering performance of WC–Co tools. As the temperature variation of the cutting tool in dry machining is similar to that in annealing process, the effect of tool-chip interface temperature on the mechanical properties of cutting tool materials in dry machining can be studied by means of annealing experi...

2003
W. Limmer A. Koeder S. Frank M. Glunk W. Schoch V. Avrutin K. Zuern R. Sauer A. Waag

The effect of short-time and long-time annealing at 250 • C on the conductivity, hole density, and Curie temperature of GaMnAs single layers and GaMnAs/InGaMnAs heterostructures is studied by in-situ conductivity measurements as well as Raman and SQUID measurements before and after annealing. Whereas the conductivity monotonously increases with increasing annealing time, the hole density and th...

M. A. Sohrabizadeh M. Sheikhi Y. Mazaheri

In the current study, the recrystallization behavior of 75% cold-rolled Fe-22Mn-10Al-1.4C steel during annealing at 750, 770, 790, 810, and 830°C was studied. X-ray diffraction patterns and optical microscopy were used to characterize microstructures. The Vickers Micro-hardness test was used to characterize recrystallization kinetics during annealing. Johnson-Mehl-Avrami-Kolmogorov (JMAK) model...

Journal: :journal of nanostructures 2014
s. m. seyedahmadian m. ghasemnejadesfahlan

spherical granules of the superionic conductor β/β́ lizr2(po4)3 in the range of sub 100 nm sizewere synthesizedvia freeze drying methodand fully reviewed in all aspects. samples were characterized by the x-ray diffractometry (xrd), the thermal analysis (tg, dsc), thefourier transform infra-red spectroscopy (ftir) and the scanning electron microscopy (sem).their structuredepends largely on the me...

Journal: :AI Commun. 2000
E. Poupaert Yves Deville

Temperature is the control parameter of Simulated Annealing, one of the best-known local search optimisation algorithms. Scheduling the temperature evolution during optimisation is a crucial component of simulated annealing. We propose to elect acceptance probability as a new control parameter of simulated annealing. The concept of imposing a schedule to acceptance probability throughout optimi...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2001
T Munakata Y Nakamura

The optimal cooling schedule for simulated annealing is formulated to derive a differential equation for the time-dependent temperature T(t). Based on this equation, the long-term behavior of T(t), entropy production, and the Kullback-Leibler entropy are studied. For some simple examples, such as a many-level system and the small scale traveling salesman problem, the explicit time dependence of...

2009
Paul Ohodnicki David E. Laughlin Michael E. McHenry Vladimir Keylin Joe Huth P. R. Ohodnicki D. E. Laughlin M. E. McHenry

The temperature stability of field induced uniaxial anisotropy KU was investigated by thermomagnetic treatments of Co1−xFex 89Zr7B4 amorphous ribbons after field annealing below and above the crystallization temperature. We conclude: 1 Field annealing treatments are necessary to properly investigate the temperature stability of KU, 2 KU of field crystallized alloys exhibit improved temperature ...

سپهوند, فاطمه , متولی زاده, لیلی ,

SnO2 nanoparticles have been synthesized via sol-gel method in different annealing temperatures. TEM, FESEM and XRD techniques have been used to investigate the structure and morphology of SnO2 nanoparticles. The XRD pattern analysis shows all samples are single phase. XRD patterns show as the annealing temperature increases, the peaks become sharper which is related to the increase in the crys...

2012
Lauren A. Slattery Nicole L. Guckert Courtney E. Shell

Functional energy storage and return prosthetic and orthotic devices have been manufactured out of Nylon 11 using selective laser sintering due to its high ductility and energy return properties. However, there is concern that material voids caused by incomplete sintering may compromise material properties and lead to premature fracture. Post-build annealing has the potential to eliminate voids...

2011
Kwangsuk Park Qifeng Zhang Betzaida Batalla Garcia Guozhong Cao

Photoelectrodes made of submicrometer-sized aggregates of ZnO nanocrystallites coated with TiO2 layer by atomic layer deposition with different annealing temperatures were investigated for dye-sensitized solar cells. Although the annealing at 350 C is commonly used for the ZnO aggregates in order to preserve the desired large surface area and mesoporous structure, the presence of ALD-TiO2 layer...

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