InFig. 5we show the calculatedignition delaytimes of homogeneous heptane–air mixtures using mechanisms with[6,7]and without[8]the low-temperature chemistry relevant for ignition[9]. It is seen that, without the
Furthermore, its negative temperature coefficient (NTC) behavior provides insights into the oxidation of larger hydrocarbons. Several studies have investigatedn-butane oxidation at engine-operating pressures using various methods, including ignition delay time (IDT) measurements in rapid compression machines ...
The energy conversion efficiency of TE devices is determined by the performance of TE materials, which is characterized by the dimensionless figure of merit, zT=S2σT/(κL+κe), where S is the Seebeck coefficient, σ is the electrical conductivity, T is the absolute temperature, κL is ...
energy gap(ΔopEI(T)/ΔopEI(0))is1−(T/TcEI)2. The temperature-dependent superfluid plasma frequency of the excitonic condensation in Ta2NiSe5has been determined from measured optical data. Our study may pave new avenues in the future research on excitonic insulators. NiSe5 Introduction Excito...
High voltage MLCCs with C0G temperature coefficient characteristics could apply DC-DC invertor were investigated for its dielectric properties. Also we manufactured MLCC through various process and studied the characteristics of dielectric break down voltage [BDV] and dielectric property as the variation ...
strongly ordered, so alloying effects and chemistry, i.e., non-equiatomic compositions, remain very important. Ideally, RMPEAs are single-phase systems with extremely high melting points, and high specific strength via solid-solution strengthening well above 1000 °C. The first two RMPEAs ...
σfor the single-term model indicating a systematic misfit at low temperatures. The full line showsΔ/σfor the two-term model that exhibits no systematic misfit. The dashed line in the upper figure illustrates the linear thermal expansion coefficient calculated from the two-term fitting parameters...
Tf may be calculated from the following formula: (3.9a)Tf=1.11fW|V1−V2|b1V1+b2V21Lx, where f is the instantaneous coefficient of friction, w is the instantaneous width of the band shaped conjunction, m, W is the instantaneous load on the conjunction, N, L is the instantaneous ...
As shown previously [31], the superionic transition is closely related to the creation of oxygen defects and to the increase of the self diffusivity of oxygen ions [12], causing a “bump” in several properties as linear thermal expansion coefficient, enthalpy and heat capacity. Potashnikov et...
Takagi. "Grain-boundary chemistry of barium titanate and strontium titanate. II. Origin of electrical barriers in positive-temperature-coefficient thermistors", J. Am. Ceram. Soc. 73, 3286 (1990). 99. L. Brewer. "Conference overview of the role of chemistry in high temperature materials ...