For composition design of both amorphous and nanocrystalline alloys, a well-known approach for increasing B s is to raise Fe content, since B s and mass percentage of Fe are positively related [3, 4].Therefore, the highest values of B s in both Fe-based amorphous (Co-free) and nanocrystalline alloys are almost exclusively obtained in compositions with Fe content …
As a fraction of the measured total iron, the measured Fe(II) content was <1 % for iron dextran and ferumoxytol, 1–2 % for ferric carboxymaltose and iron gluconate, and 10–15 % for iron sucrose. The Fe(II) content in iron sucrose was ≥7.5-fold higher than in any of the other IV iron formulations. Table 1.
The detailed analysis of the Möss spectra for Fe-FER, Fe-BEA and Fe- MFI is complex, but would support the previous EPR and FTIR data evidencing high proportion of iron in the cationic position in all three zeolites prepared by the proposed method.
The variation in length of β-phase increases with increasing Fe-content, i.e., the increment reaches up to 25% at 2.52% Fe. This is in contradict with research of ( et al., 1996), who found that the addition of Sr leads to the fragmentation and dissolution of β-phase needle, but in agreement with the work of et al. (2001).
After long-term thermal exposure, the morphology transformation of γ′ phase from spherical to cubic shape is observed in the alloy with 35% Fe content. The coarsening rate coefficient of γ′ phase decreases from 485.7 nm 3 /h to 280.8 nm 3 /h as increasing Fe content from 15% to 35%. The main reason is that there is a large concentration ...
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The method of analysis consists of heating up the sample to a high temperature and, at a constant temperature, switching the purge gas from inert to oxidizing. The (hbox {Fe}^{2+}) content, in the form of FeO, is thus determined from the sample's mass increase upon oxidation. Ferric iron, as (hbox {Fe}_{2}hbox {O}_…See more on link.springer
In this experiment, we will determine the quantity of iron (as Fe-phen) using visible absorption spectroscopy. Because the wavelengths of light we will use are in the visible portion …
For the following three reasons, AlCoCrFeNi HEA coating with high Fe content is worthy of research. Firstly, comparing with other metal elements (e.g., Cu, Co, Mo, Ti), Fe belongs to low-cost materials [25].Secondly, the dilution issue in cladding cannot be ignored, i.e., the substrate melts and transfers its elements to the coating alloys, leading to composition …
The effect of initial Fe content on the iron removal efficiency, morphology evolution of the Fe-rich phase and the mechanical properties of the recycled Al-7Si-xFe-1.2xMn alloy during melt holding was studied using an optical microscope (OM), scanning electron microscope (SEM) and tensile testing.The results show that with the increase of the initial Fe content, the residual …
The Fe content has significant effects on the growth of β′-Cu 4 Ti particles. Fig. 16 shows the variation of sizes of β′-Cu 4 Ti particles during aging at 500 °C, based on a large number of TEM images. It can be seen that β′-Cu 4 Ti particles in CT-1Fe alloy were much smaller than those in CT-0.2Fe alloy, ...
The objective of this work was to validate a simple, precise and accurate spectrophotometric method for the determination of iron in the iron deficiency drugs, namely are Feroglobin B12, Ferose-F ...
Fe-Se mixtures with different Fe contents are high-energy ball milled for 6 h. As shown in Fig. 1, the diffraction peak of Fe 3 Se 4 phase is a hump with the full width at half maximum (FWHM) value of ∼1.4°. It suggests that the obtained Fe 3 Se 4 phase is amorphous or weakly crystallized. And the full-width at half-maximum (FWHM) values of Fe peaks are all …
As the Fe content increased from 0.1 wt% to 1.5 wt% (wt%: mass percentage), the rod-like β-Fe gradually increased. Zhang et al. [3] examined the influence of Fe content on Al-5.0Cu-0.6Mn alloy. At 0.1 wt% Fe content, the Fe-rich phase only consisted of the Chinese-script α-Fe. When the Fe content reached 0.5 wt%, needle-like β-Fe appeared.
In this experiment, you will perform an analysis of an iron-containing solution with an unknown concentration by reducing all the iron in solution to its ferrous form, determining λmax, and …
The Fe content was responsiv e to the effects of salinity . and foliar sprays. The foliar application of GO, magnetic . Fe, and chelated Fe influenced the F e content of plants (p < 0.05).
Total iron and ferrous iron contents were determined with the standard titrimetric method using potassium dichromate as titrant after reduction of the iron (III) by tin (II) chloride and/or ...
Using AlCoCrFeNi 2.1 alloy as the reference composition, a novel Ni a Al b (FeCoCr) c eutectic high entropy alloy (EHEA) system is proposed. A strong linear relationship was established between the elemental combinations of Ni, Al and (Fe+Co+Cr)-content that evolves a similar volume fraction of B2 phase to the as-cast reference composition (volume …
The influence of various Fe contents (5, 10, 20, and 40 wt.%) on the microstructure and properties of powder metallurgy Cu−Fe alloy by spark plasma sintering, subjected to cold rolling and aging ...
The Fe content in the green zone is 30âˆ'40 wt.% (32.78âˆ'43.14 at.%), which indicates that there is a certain degree of mutual diffusion of elements in Cuâˆ'Fe alloys during hot pressing, forming a certain degree of metallurgical bonding. To eliminate the defects in Cuâˆ'Fe alloys, the hot rolling process was carried out on the ...
Furthermore, Figure 5 reveals that the welded joint possessing 0.3 wt.% Fe content displays the most refined weld surface. Conversely, a welded joint with 0.2 wt.% Fe content exhibits the coarsest surface morphology. Consequently, it can be deduced that the iron content serves as a crucial determinant in establishing the quality of the welded ...
The minor overestimation of Fe content in Fe-rich samples was likely due to co-variation in dissolved organic matter, which was very high in these samples. Total C concentrations were as high as 18% C, and co-varied with …
With the increase of Fe and Si content, β→α phase transition has been completed, and the fishbone α-AlFeSi phase accumulates at the grain boundary. After the extrusion forming process, the ...
The influences of added Fe element on the microstructures and properties of AlCoCrFe x Ni high-entropy alloys (x denoted the atomic fraction of Fe element at 0.2, 0.4, 0.6, 0.8, 1.2, 1.4, 1.6, 1.8, and 2.0) were investigated. When x = 0.2, the alloy exhibited dendrites morphology, but as the Fe content increased, the AlCoCrFe x Ni HEAs transformed to …
The Cu 1 Si x and Cu 1.5 Si x (x = 9.5–13.5) alloys ingots were prepared by arc melting the Fe, Si, B, Nb, and Cu raw materials with the purities of over 99.9 mass% under a Ti-gettered argon atmosphere. Several remelting cycles were conducted to ensure homogeneous mixing of the elements. The total mass losses were less than 0.2 %. Alloy ribbons with a width …
As the Fe content decreases, the reduction rate/slope of the Fe phase size during drawing with respect to the cold drawing strain decreases obviously. The lowest reduction rate of Fe in the Cu-5Fe alloy is observed, i.e., from 0.43 (η = 0) to 0.27 μm (η = 4.03). In addition, the reduction in the Fe phase slows down with the increase in strain.
The results showed that, with increasing Fe content from 5 wt.% to 40 wt.%, the distribution of Fe phase evolved from the discrete spheroid to the continuous stagger, accompanying with its size increasing from 0.29 to 1.20 μm. Accordingly, the yield strength of the aged alloy increased from 411.5 to 788.8 MPa, whilst the electrical ...
FTIR Spectroscopy. Depending on the iron content, and according with the previous published results, two prevailing cationic forms were identified by bands formed in region of skeletal vibrations between 980 cm-1 and 860 cm-1 for all three iron zeolites (for more details see e.g. [19]).In the case of Fe-FER quantitative evaluation of the changes of the IR bands of the …
Herein, to reduce costs and improve the mechanical properties of medium-entropy alloys (MEAs), ferrous MEAs, Fe x (CoCrNi) 100−x (x = 55,60,65, and 70), were prepared via mechanical alloying (MA) and spark plasma sintering (SPS). The effects of the Fe content on the microstructure and mechanical properties of Fe x (CoCrNi) 100−x MEAs were investigated.
In this work, three Al-Y alloys with various Fe content were cast to first observe the effect of Fe content on their solidification behavior and then to evaluate the effects of Fe content on the mechanical response and underlying microstructure evolution using several microscopy techniques. Moreover, thermodynamic calculations were performed to ...
Both the results of these two analytical methods were compared with that listed in the Standard Substance Certificate. The percentage content of Fe in the same sample of iron ore by the ECIS method was (20.17±0.08)% by mass, which shows a good performance to analyze the Fe content of iron ore in combination with LIBS.
At lower Fe content (≤0.25 %), the increase in average equivalent diameter of Fe-rich phases is not significant, but when the Fe content increased to 0.35 %, the average equivalent diameter of Fe-rich phases reaches 7.98 μm, which is 21.3 % higher than that of F20 alloy. However, the increase in Fe content also increases the standard ...
We assess and develop methods that explicitly recognize this need. We show that for water samples prepared by acidification and filtration for inductively coupled plasma – …
In our previous work, the representative Fe 83 Si 2 B 11 P 3 C 1 amorphous alloy with high B s of 1.67 T, good amorphous forming-ability (AFA), good bending ductility and lower coercivity (H c) after annealing for 1 h has been developed [26].Beside the promising industrial application, this alloy system without noble element is a good material model for exploring the …
The external calibration in conjunction with internal standardization(ECIS) coupled with laser-induced breakdown spectroscopic(LIBS) technique was proposed to perform the …
Iron ore plays a pivotal role in the global industrial sector (Zhao et al., 2022), serving as a fundamental raw material for steel production and, contributing to the trillion-dollar metal market annually (Holmes et al., 2022).However, the mining and processing (He et al., 2019) of iron ore result in the generation of a significant amount of waste rock with a low total iron (TFe) …
Absorption spectra of 25 multicomponent solutions (a) spectra overlay of Cu(II), Fe(III), and Ni(II) (b) The absorbances at 805, 720, and 295 nm showed correlation coefficients of 0.96, 0.85, and ...
It was observed that as the Fe content increases, the GFA and thermal stability of FeSiBC amorphous alloys decrease. When x = 0.5 and 1.0, the alloys approach the critical …
This article presents a guided-inquiry (GI) hands-on determination of Fe in food samples including plantains, spinach, lima beans, oatmeal, Frosted Flakes cereal (generic), tilapia fish, and chicken using flame atomic absorption spectroscopy …
Dilution rate is one of most important factors influencing the microstructure and performance of the laser cladding layer. In order to obtain a reasonable dilution rate in the laser cladding layer of Inconel 625 alloy, the laser cladding layers with different Fe content were prepared on the surface of 20# steel by the laser cladding technique. The influence of Fe …