Preparation of Cu-Cr alloy powder by heat mechanical alloying and Box-Behnken design based optimization

Zhao, Qing; Shao, Zhongcai; Leng, Qichao; Zhang, Xundi; Liu, Chengjun; Li, Baokuan; Jiang, Maofa

doi:10.1016/j.powtec.2017.08.039

Cited by 17 publications

(5 citation statements)

References 34 publications

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“…Box-Behnken design, a second-order multivariate technique based on a three-level incomplete factorial design, is efficient and ideal to establish a RSM (Zhao et al 2017). In this study, the experiments were designed by the BBD method.…”

Section: Box-behnken Design (Bbd)mentioning

confidence: 99%

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Hydroxylamine-enhanced Fe(II)-peroxymonosulfate activation for efficient degradation of organic pollutants: optimization by response surface methodology

Zhang

Zhou

et al. 2022

Water Science and Technology

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In this work, the response surface methodology (RSM) was used to model and optimize the hydroxylamine (HA) enhanced Fe(II)/peroxymonosulfate (PMS) process. The enhanced effect of HA on the degradation efficiency of orange II (AO7) in the Fe(II)/PMS system was quantitatively analyzed. Pareto analysis showed that the individual and interactive effects of HA, Fe(II) and PMS were of the following order: HA > Fe(II) > PMS and Fe(II)/PMS > HA/PMS > Fe(II)/HA. The optimal conditions of HA/Fe(II)/PMS system were as follows: Fe(II) concentration was 34.0 μM, HA concentration was 0.4 mM, and PMS concentration was 0.9 mM. When the initial pH was 4.0–6.0, the degradation efficiency of AO7 in the HA/Fe(II)/PMS system was significantly higher than that in the Fe(II)/PMS system (P < 0.05). Hydroxylamine enhances the degradation of AO7 in the Fe(II)/PMS system by reducing Fe(III) to Fe(II). The results of quenching experiment showed that SO4•− was the dominating reactive oxygen species (ROS) in the HA/Fe(II)/PMS system. In the HA/Fe(II)/PMS system, CO32− and humic acid inhibited the degradation efficiency of AO7. This work provides a novel mathematical model for the degradation of AO7 in the HA/Fe(II)/PMS system, which can be popularized and applied in similar experiments.

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Section: Box-behnken Design (Bbd)mentioning

confidence: 99%

“…This shows that the model can explain 99.96% of the response value variation. In summary, the model is significant and can be used to predict the experimental process (Zhao et al 2017).…”

Section: Rsm Modeling and Analysis Of Variancementioning

confidence: 99%

Hydroxylamine-enhanced Fe(II)-peroxymonosulfate activation for efficient degradation of organic pollutants: optimization by response surface methodology

Zhang

Zhou

et al. 2022

Water Science and Technology

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“…With the aim of extracting Cr from low Fe(II)-chromite, sulfuric acid leaching treatment with the help of dichromic acid was investigated in the current work following an experimental plan, i.e., the Box-Behnken design (BBD), which is widely employed in different research fields to produce, in an optimal way, experimental data for response surface modeling [35][36][37][38]. By these methods, the combined effects of sulfuric acid concentration (C), dichromic acid/chromite ratio (r), and processing temperature (T) on the Cr and Fe extracting behavior were studied.…”

Section: Introductionmentioning

confidence: 99%

Cleaner Production of Chromium Oxide from Low Fe(II)-Chromite

et al. 2020

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Sulfuric acid-based leaching is a promising cleaner method to produce chromium salts, but its feasibility for treating low Fe(II)-chromite still remains to be proven. A Box–Behnken design (BBD)-based set of experiments for sulfuric acid leaching of low Fe(II)-chromite was utilized in this work for generating an experimental dataset for revealing the functional relationships between the processing parameters and the extraction yields of Cr and Fe. The dependent variables were found to exhibit strong intercorrelations and the models developed on the basis of statistical criteria showed excellent prediction accuracy. The optimum process conditions of leaching treatment were found to be a temperature of 176 °C, a dichromic acid/chromite mass ratio of 0.12, and a sulfuric acid concentration of 81%. Furthermore, the dissolution behavior of chromite in the leaching process and the effect of dichromic acid were experimentally investigated. It was found that the decomposition efficiency was highly dependent on the Fe(II) content of chromite, and that the dichromic acid acted both as an oxidant and a catalyst in the leaching process. On the basis of the results of this study, a novel process for treating low-Fe(II) chromite was proposed.

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“…However, its mechanical strength can be improved by adding alloying elements by means of Mechanical Alloying (MA) and powder metallurgy [2][3][4][5].In this work we report the results of the Cu10Mo alloy, synthesized during 10 h by MA. The microstructural characterization was carried out by X-Ray Diffraction to identify the phases formed after MA process, the crystals size was determined by Rietveld method using the MAUD software [6].…”

mentioning

confidence: 99%

“…Copper and its alloys have good electrical and thermal conductivity as well as good resistance to corrosion [1] but it has a low mechanical strength. However, its mechanical strength can be improved by adding alloying elements by means of Mechanical Alloying (MA) and powder metallurgy [2][3][4][5].…”

mentioning

confidence: 99%

Structural Characterization of Cu10Mo Alloy Synthesized by Mechanical Alloying

et al. 2018

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Copper and its alloys have good electrical and thermal conductivity as well as good resistance to corrosion [1] but it has a low mechanical strength. However, its mechanical strength can be improved by adding alloying elements by means of Mechanical Alloying (MA) and powder metallurgy [2][3][4][5].In this work we report the results of the Cu10Mo alloy, synthesized during 10 h by MA. The microstructural characterization was carried out by X-Ray Diffraction to identify the phases formed after MA process, the crystals size was determined by Rietveld method using the MAUD software [6]. This results were obtained with a value of chi 2 : 1.33 and Rwp = 8.28 respectively. Finally, analysis of Scanning electron microscopy (SEM) and Energy dispersive spectroscopy (EDS) were used to determine the morphology and chemical composition of the particles formed. Figure 1 shows the X-Ray results of the alloy. It is possible to observe the presence of different peaks, which correspond to the Cu and Mo elements. By other hand the Rietveld analysis showed a crystal size of 13 and 24 nm and a microdeformation of 38.5 x 10 -4 and 3.6 x 10 -6 R.M.S., for the Co and Mo respectively. Figure 2a shows the morphology of the particles analyzed by SEM. It can be observed a different morphology of the particles, the average size is ranking between 5-30 nm. The chemical composition of the particles can be observed in figure 2b where Cu and Mo peaks are observed. It is possible to observe that ther is not a presence a other peak, which can indicate contamination from the steel balls used during the milling, the quantification of the elements indicated that the particles are composed of 94.56% wt and 5.46% wt of Cu and Mo respectively.

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Preparation of Cu-Cr alloy powder by heat mechanical alloying and Box-Behnken design based optimization

Cited by 17 publications

References 34 publications

Hydroxylamine-enhanced Fe(II)-peroxymonosulfate activation for efficient degradation of organic pollutants: optimization by response surface methodology

Hydroxylamine-enhanced Fe(II)-peroxymonosulfate activation for efficient degradation of organic pollutants: optimization by response surface methodology

Cleaner Production of Chromium Oxide from Low Fe(II)-Chromite

Structural Characterization of Cu10Mo Alloy Synthesized by Mechanical Alloying

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