نتایج جستجو برای: chromia
تعداد نتایج: 159 فیلتر نتایج به سال:
Control of magnetic states by external factors has garnered a mainstream status in spintronic research for designing low power consumption and fast-response information storage processing devices. Previously, magnetic-cation substitution is the conventional means to induce ferromagnetism an intrinsic antiferromagnet. Theoretically, anion-doping proposed be another effect change ground states. H...
Hematologic evaluation of a 5-yr-old girl from the child and from both of her parents with lifelong anemia demonstrated the an abnormal balance between the synthecharacteristic findings of congenital dyssis of the a and non-a globin components erythropoietic anemia (CDA) type II. of hemoglobin was observed, the a chains Globin chain synthesis was studied in vitro being synthesized in excess. Ne...
The present work investigates the high temperature oxidation and corrosion behaviour of high entropy superalloys (HESA). A high content of various solutes in HESA leads to formation of complex oxides, however the Cr and Al activities of HESA are sufficient to promote protective chromia or alumina formation on the surface. By comparing the oxidation and corrosion resistances of a Ni-based supera...
The quality of the refractories applied on integrated gasification combined cycle should be a key factor that affects both the reliability and the economics of gasifier operation. To enhance the workability of chromia/alumina castables, three types of ultrafine alumina powder were added to improve the workability. Densification behavior of such castables in the presence of ultrafine alumina was...
LOW-TEMPERATURE CARBURIZATION is a gaseous carburization process performed at atmospheric pressure, at temperatures where the kinetics of substitutional diffusion are very slow. Low-temperature carburization hardens the surface of austenitic stainless steels through the diffusion of interstitial carbon, without the formation of carbides. The surface must be activated, by modification and remova...
Metallic materials under extreme thermo-mechanical-environmental service conditions oftentimes rely on the formation of dense and protective oxide layers, e.g., typically alumina or chromia. Their failures, however, usually emerge from morphological instability such layers at oxide-alloy interface. This work suggests that a tensile, biaxial stress arises in substrate alloy due to concomitant ox...
We demonstrate boundary spin polarization at the surface of a Cr2O3 single crystal using spin-polarized low-energy electron microscopy (SPLEEM), complementing prior spin polarized photoemission, spin polarized inverse photoemission, and x-ray magnetic circular dichroism photoemission electron microscopy measurements. This work shows that placing a Cr2O3 single crystal into a single domain state...
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