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that when the particle size reduces to be close to the superparamagnetic size, thermal fluctuations and the possibility of quantum tunneling of magnetization are expected to begin to affect and dominate... by chemical method, considering the thermal fluctuation, CHRISTODOULIDES et al[45] have reported that the coercivity as a function of spherical particle size, d, follows the following relation:  ......
1 mm的板材进行堆叠和轧焊后的几何形状变化[18] Table 1 Geometrical changes of materials during ARB process where two pieces of sheets with thickness of 1 mm roll-bonded by 50% reduction per cycle[18] 然而,ARB工艺存在... and thermal stability of ultrafine grained 6061 Al alloy fabricated by accumulative roll bonding process[J]. Mater Sci Eng A, 2001, 316(1/2): 145-152. [38] VALIEV R Z, LANGDON T G. Principles of equal-channel......
, 13: 295-302. [22] MCLEAN M. Friction stress and recovery during high-temperature creep: Interpretation of creep transients following a stress reduction[J]. Pro Soc, 1980, 373: 93-109. [23] YUAN CHAO......
, the efficiency of searching is the highest of all. While increasing the number of independent dimensions from H=1 yields a dramatic reduction in delivery time for values of α>0, this improvement......
, 2010, 322(21): 3346-3350. [30] AKIYA T, SASAKI T T, OHKUBO T, UNE Y, SAGAWA M, KATO H, HONO K. The origin of the coercivity reduction of Nd-Fe-B sintered magnet annealed below an optimal temperature[J......
the initial precipitate size distribution and details of the thermal treatment (i.e. temperatures, ramp rates, etc). For each time step, the dissolution or growth of precipitates in each size class... precipitates reaching some optimum distribution at a maximum hardness, followed by decreasing hardness associated with precipitate coarsening that results in a progressive reduction in the number......
; plasma electrolytic oxidation; wear; corrosion 1 Introduction Mass reduction in vehicles is of special concern to reduce fuel consumption and CO2 emission [1]. That is why the lightmass aluminium alloys......
of plastic shear strain) of sandstone rock samples in this test. However, there are obvious differences in reduction pattern between peak stress under natural state and under saturated state. Under......
with an increase in the β to equalize the reduction of time t [34]. If the Eα values are stable over the α range and multiple peaks or shoulders are not found in the resulted thermal solid-state reaction...Trans. Nonferrous Met. Soc. China 28(2018) 1887-1902 Thermal kinetic analysis of a complex process from a solid-state reaction by deconvolution procedure from a new calculation method and related......
control obtained from the H∞ method usually belongs to a higher order that makes implementation complex. Several order reduction methods have been suggested to address problems in the controller. Because......