ADVANCED POWDER TECHNOLOGY
·
2024
·
IF 4.2
Yu Xie,Xiaoqi Ban,Wanzhong Yin,Jin Yao
This study systematically investigated the impact of Hydrochloric acid (HCl) corrosion pretreatment on hematite flotation within the NaOL system, analyzing the influence of varying HCl concentrations (measured as pH) on hematite acid corrosion. The results showed that at pH = 1, after 4 min of acid corrosion, hematite exhibited optimal floatability, achieving a recovery rate of 82.49 %, significantly surpassing the original ore. Conversely, at pH = 5, after the same duration of acid corrosion, hematite’s flotation is inhibited, yielding a recovery rate of 59.38 %, lower than the original ore. Through contact angle, adsorption amount measurements, and AFM detection, it is observed that after corrosion in pH = 1 HCl solution, hematite surface roughness increases, more NaOL collector is adsorbed, leading to significant hydrophobicity enhancement. After corrosion in pH 5 weak acid environment, despite increased surface roughness, hematite surface was coated with particulate matter, greatly reducing NaOL adsorption and further decreasing hydrophobicity. Further analysis using FTIR, XPS, and hydrolysis component calculation indicated that after acid corrosion in HCl at pH = 1, hematite exposed more active Fe sites, enhancing flotation performance. Conversely, at pH = 5, surface-dissolved Fe 3+ transformed into hydrophilic Fe(OH) 3 , inhibiting flotation by covering the hematite surface.
研究领域:
矿物加工工程
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材料科学与工程
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Dewei Ma,Panli Zhu,Jun Huang,Xiuhua Cao
The research on low-temperature lead-free glass is of great significance for the miniaturization, integration and intelligence of current electronic products, as well as environmental protection. In this article, we report the preparation of low-temperature lead-free B 2 O 3 -BaO-ZnO-SiO 2 -Al 2 O 3 -TeO 2 glasses by a melt-quenching technique. With the increase of TeO 2 content in glass, the glass transition temperature and melting temperature of sintered glass powder decrease, while its wettability and acid corrosion resistance show an increasing trend. The application of glass powder in the sintering experiment of terminal electrode slurry further proves this viewpoint. Compared with the poor sintering performance of the slurry with TeO 2 -free glass powder, the slurry containing TeO 2 glass powder forms a very dense sintered solid, and the sintered slurry is tightly bonded to the ceramic substrate .
研究领域:
材料科学
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环境科学
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Saisai Li,Wenjin Ren,Jiaxuan Xin,Can Chen,Dixin Yan,Xiaoyu Xia,Minghui Li,Ruoyu Chen
To address the challenge of preparing alumina-mullite refractory linings with complex geometries for sulfur incinerators, alumina-mullite thermal insulation refractories with controllable pore structures were fabricated using direct ink writing. This process used rice husks coated with different concentrations of alumina sol to effectively control their water absorption properties. The study explored the effects of alumina sol concentration on the rheological behavior and printability of the inks, as well as the influence of the alumina sol coating on the pore structure, phase composition, and key performance metrics (physical properties, thermal shock resistance, thermal conductivity, and acid corrosion resistance) of the final samples. Interestingly, increasing the alumina sol concentration initially decreased the viscosity and thixotropy of the ink, followed by an increased, while also affecting the shear-thinning behavior, yield stress and flow stress. Compared to refractories made with rice husk coated with a low concentration alumina sol, the presence of mullite whiskers formed in the pores left by the rice husk burnout not only mitigated the residual quartz phase issue but also enhanced the microporosity. This improvement led to increased strength, thermal insulation, and acid corrosion resistance. After heating to 1500 °C, the refractory made with rice husk coated with 15 wt% alumina sol achieved 25.8 % porosity, 73.6 MPa compressive strength, 3.21 W/m·K thermal conductivity, 85 % residual flexural strength ratio, and excellent resistance to acid corrosion. This method shows great potential for producing refractory linings with complex shapes and further enhancing material performance by optimizing the microstructure.
研究领域:
材料科学
·
陶瓷工程
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DOI
高影响因子
npj Materials Degradation
·
2024
·Vol. 8
·期 1
·1-11
·
IF 6.6
Xu Changyuan,Li Linyang,Hu Rong,Wu Huihua,Kong Lingnan,Zhong Nianbing,Wan Bo,Wu Lei,Lai Dong,He Yuanyuan,Liu Yang,Peng Xiaoling,Zhao Mingfu,Xie Quanhua
To monitor in situ the temperature, pH, and micro-strain change information of sandstone artifacts in the process of oxalic acid corrosion, the temperature, pH, and micro-strain fiber Bragg grating (FBG) sensors are developed. A theoretical model of the sensors is established. The surface morphology, material composition, pore structure, temperature, pH, and micro-strain of sandstone corroded by oxalic acid solutions of different concentrations are investigated. The experimental results show that the higher the concentration of oxalic acid, the stronger the corrosiveness of the sandstone. Ferrous oxalate and calcium oxalate produced by corrosion continuously precipitate from the inside of the rock, and the dual reaction of crystallization and dissolution occurs, reducing the proportion of fine pores in the rock pore suction and gravity. The oxalic acid solution is transported to the middle of the sandstone (3 cm) and undergoes the strongest chemical reaction with ore particles and debris, resulting in the maximum wavelength drift of the temperature, pH, and micro-strain sensors. The results of this study provide important support for analyzing the acid dissolution mechanism of stone cultural relics and the preventive protection of cultural relics.
研究领域:
文物保护
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材料科学
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DOI
高影响因子
Energies
·
2025
·Vol. 18
·期 18
·4854
·
IF 3.2
Kai Wang,Chenye Guo,Qisen Gong,Gen Li,Xiaoyue Zhuo,Peng Zhuo,Chaoxian Chen
To address the challenges of low permeability, high gas adsorption, and a fragile structure in coalbed methane reservoirs, this study developed a high-strength composite proppant with an activated carbon skeleton via nitric acid pretreatment, silica–alumina sol coating, and calcination. Orthogonal experiments optimized the preparation conditions: 30–40 mesh activated carbon, Si/Al molar ratio of 4:1, calcination at 650 °C for 2 h. The resulting proppant exhibited an excellent performance: a single-particle compressive strength of 55.5 N, porosity of 33.2%, crushing rate of only 2.3% under 50 MPa closure pressure, and permeability 48.5% higher than quartz sand. In simulated acidic coalbed environments (pH 3–5), its acid corrosion rate was <2.8%, and it enhanced methane desorption by 16.2% compared to pure coal. Additionally, the proppant showed a superior transport performance in fracturing fluids, with better distribution uniformity in fractures than ceramsite, and its hydrophobic surface (contact angle 115.32°) improved fracturing fluid flowback efficiency. This proppant integrates high strength, good conductivity, gas desorption promotion, and corrosion resistance, offering a novel material solution for efficient coalbed methane extraction.
研究领域:
能源工程
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材料科学
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石油工程
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化学工程
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DOI
高影响因子
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
·
2016
·
IF 3.433
Dong Wang,Kaiwen Guan,Zhiping Bai,Fuqiang Liu
A new facile coating strategy based on the hydrophobicity of methyl groups was developed to prevent nano-sized magnetite particles from strong acid corrosion. In this method, three steps of hydrolysis led to three layers of protection shell coating Fe3O4 nanoparticles. Filled with hydrophobic methyl groups, the middle layer mainly prevented the magnetic core from strong acid corrosion. These magnetite particles managed to resist 1 M HCl solution and 2.5 M H2SO4 solution. The acid resistant ability was higher than those reported previously. After further modification with amino-methylene-phosphonic groups, these magnetite particles successfully adsorbed Sb(III) in strong acid solution. This new strategy can also be applied to protect other materials from strong acid corrosion.
研究领域:
环境化学
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材料科学
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纳米技术
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污染控制
·
吸附材料
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Sen Jiang,Xin Xu,Junying Yin,Yue Lei,Hongtao Guan,Yunfang Gao
Lithium (Li) metal batteries (LMBs), paired with high-energy–density cathode materials , are promising to meet the ever-increasing demand for electric energy storage. Unfortunately, the inferior electrode–electrolyte interfaces and hydrogen fluoride (HF) corrosion in the state-of-art carbonate-based electrolytes lead to dendritic Li growth and unsatisfactory cyclability of LMBs. Herein, a multifunctional electrolyte additive triallylamine (TAA) is proposed to circumvent those issues. The TAA molecule exhibits strong nucleophilicity and contains three unsaturated carbon–carbon double bonds , the former for HF elimination, the later for in-situ passivation of aggressive electrodes. As evidenced theoretically and experimentally, the preferential oxidation and reduction of carbon–carbon double bonds enable the successful regulation of components and morphologies of electrode interfaces, as well as the binding affinity to HF effectively blocks HF corrosion. In particular, the TAA-derived electrode interfaces are packed with abundant lithium-containing inorganics and oligomers , which diminishes undesired parasitic reactions of electrolyte and detrimental degradation of electrode materials . When using the TAA-containing electrolyte, the cell configuration with Li anode and nickel-rich layered oxide cathode and symmetrical Li cell deliver remarkably enhanced electrochemical performance with regard to the additive-free cell. The TAA additive shows great potential in advancing the development of carbonate-based electrolytes in LMBs.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
Journal of Materials Research and Technology-JMR&T
·
2025
·
IF 6.6
Yine Ren,Zhongqiang Yu,Wen Sun,Kaixin Xu,Junzhe Fan,Lida Wang,Zhengqing Yang,Guichang Liu,Qian Wang,Junhai Luo
Simultaneously improving the corrosion protection performance and mechanical stability of coatings is a challenge in the preparation of superhydrophobic coatings. In this paper, a novel controlling sedimentation method is developed to prepare multifunctional superhydrophobic gradient coatings. The prepared gradient coating exhibits excellent superhydrophobicity with a contact angle of 156° with great chemical stability and wear resistance after the immersion of pH = 1H 2 SO 4 and pH = 10 NaOH solution for 60 days and 180 times of sandpaper grinding. In addition, a persistent high corrosion resistance to 10 wt% H 2 SO 4 solutions, and no cracking occurred after 240 cycles of -60 – 140 °C cold-thermal shock. This research has positive implications for the development and application of corrosion-protective organic coatings of heat exchanger equipment in the harsh environment of desulfurized flue gas, it can be applied to actual industrial production.
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DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·Vol. 13
·期 2
·1985-2000
·
IF 1.5
Zhe Zhang,Le Ruan,Weipeng Zhang,Yuzeng Lyu,Wei Shang,Yuqing Wen,Xiuying Li,Ling Wu,Yanni Jiao
The triazol-3-ylamine and three different kinds of Schiff base compounds are self-assembled on bronze surface. Electrochemical impedance spectroscopy and potentiodynamic polarization measurements show that the triazol-3-ylamine and Schiff base self-assembled films can protect bronze from corrosion in 0.5 M HCl solution. The corrosion efficiency increases with the self-assembly time increasing and reaches a stable value after 8 h. The highest corrosion efficiency of the bronze electrode modified with self-assembled films reaches 95.81% after immersing in 0.005 M 2,4-Dibromo-6-[(4H-[1,2,4]Triazol-3-ylimino)-methyl]-phenol Schiff base solution for 10 h. X-ray photoelectron spectroscopy and scanning electrochemical microscope are used to characterize the inhibitive ability of the self-assembled films. Quantum chemical calculations and dynamic simulations indicate that the triazol-3-ylamine and Schiff bases molecules can absorb on the copper surface via chemisorption. The adsorption energy increases with the number of aromatic rings.
研究领域:
材料腐蚀与防护
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物理化学
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表面科学
·
电化学
·
计算化学
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Dandan Shao,Gaofei Wei,Fu Zhang,Shuduan Deng,Xianghong Li
Aluminum plays important roles in infrastructure construction, aerospace, transportation, and industries for its excellent performance. Hence, exploring green aluminum corrosion inhibitors with high efficiency is becoming a research hot spot. In this study, the invasive weed of Alternanthera philoxeroides which seriously threatens the ecological environment was designed as a precursor to prepare Alternanthera philoxeroides extract (APE) as a plant corrosion inhibitor via ultrasonic extraction . The weight loss method and electrochemical measurement were used to study the inhibition effect of APE on aluminum in hydrochloric acid . The results showed that the maximum inhibition efficiency of APE is up to 96 % in 1.0 M HCl solution at 20 °C. Besides, it further proved that the physical and chemical adsorption worked simultaneously, and the APE acted as a mix-type inhibitor to improve good inhibition efficiency to the Al via the geometric coverage effect. A series of characterization and theoretical analyses confirmed that APE molecules exhibit high inhibiting efficiency to aluminum corrosion in HCl solution by laying horizontally and forming an adsorption film on the surface of the aluminum. The outcomes of this study may offer valuable insights into the treatment of invasive plants for their high-value utilization.
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高影响因子
RSC Advances
·
2016
·Vol. 6
·期 27
·22250-22268
·
IF 3.289
Z. Zhang,N. C. Tian,X. D. Huang,W. Shang,L. Wu
The synergistic corrosion inhibition effect of indigo carmine and three kinds of cationic organic compounds on 1045 carbon steel (CS) in 0.5 M HCl solution is reported. Electrochemical measurements showed that these three cationic organic compounds combined with indigo carmine reduce the speed of corrosion on 1045 CS and act as effective inhibitors. The combination of indigo carmine with BAB resulted in the best synergistic corrosion inhibition effect (S = 17.14), and the best inhibition efficiency (95.0%). SEM images and XPS data of the corroded steel surfaces suggested that the indigo disulphonate anion and organic cation could be simultaneously adsorbed on the CS surface to inhibit the corrosion of iron. The synergistic inhibition mechanism was investigated by dynamic simulations using quantum chemistry.
研究领域:
材料腐蚀与防护
·
物理化学
·
金属材料科学
·
表面科学
·
电化学
·
量子化学
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DOI
高影响因子
危险品化学品经营许可证（带存储）