JOURNAL OF MOLECULAR LIQUIDS
·
2024
·
IF 5.3
Qinhua Miao,Lei Fan,Fan Zhang,Yaran Lv,Jie Cheng
Cobalt is a potential substitute for copper as local interconnects in sub-10 nm interconnects, the chemical mechanical polishing (CMP) of which is quite challenging due to the high chemical reactivity of Co. By using a combination of experiments and theoretical calculations, the optimum corrosion inhibitor of Co is identified and the corrosion inhibition mechanism of TTLYK on Co is further investigated. It investigates the effects of various corrosion inhibitors, including potassium oleate, dodecyl benzene sulphonic acid, octyl hydroxamic acid, and 2,2′-[[(methyl-1H-benzotriazol-1yl) methyl] imino] bis-ethanol (TTLYK) on Co through chemical mechanical polishing and static etching experiments. The results show that among various corrosion inhibitors, TTLYK presents the best corrosion inhibition effect. When the basic slurry contains 10 mM TTLYK, the corrosion inhibition efficiency could reach 96.23 %, the material removal rates of Co is 161.79 nm/min, the static etching rates is 0.85 nm/min, and the material removal selectivity ratio of Co and Ti is 39:1. The results fully meet the requirements of the Co bulk CMP process. It is revealed TTLYK could form a protective layer with a synergistic physical and chemical adsorption on Co, in which the chemical adsorption occurs through the formation of Co N bonds. The adsorption of TTLYK could decelerate the transformation of CoO and Co(OH) 2 to Co 3 O 4 , and the as formed Co-TTLYK complex provides the main corrosion inhibition.
研究领域:
材料科学
·
表面工程
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Junwei Wang,Xuhui Wang,Dengjia Yuan,Min Xu,Ziyu Yan,Honghua Ge
The electrochemical water softening technique has the advantages of environmental friendliness, energy saving, and no secondary pollution. However, the easy scaling on the cathode surface affects its hardness removal efficiency, especially for slag-flushing water with high hardness and low alkalinity. In addition, the impact of electrochemically softened water on metal corrosion behavior is unclear and poses potential safety hazards. In this study, a novel electrochemical water softening reactor with a barrier layer structure was designed. By increasing the pH value of the water solution in the cathode region, the precipitation reaction was transferred from the cathode surface to the solution and barrier layer surfaces. The strong oxidizing substances generated by the anodic reaction were adsorbed through the barrier layer, thereby inhibiting their corrosive effect on carbon steel. Compared with the common electrochemical water softening reactor, the improved reactor has increased the pH in the cathode region from 8.58 to 12, increased the hardness removal efficiency from 5.8 % to 53.6 %, and reduced the corrosion rate of carbon steel from 0.396 mm/a to 0.254 mm/a. The significant increase in pH accelerated the rate of precipitation reactions in solution, increased the particle size of the precipitate, and caused rapid settling of the precipitate particles. The average settling rate of precipitated particles was 0.331 mg/s, much higher than the 0.017 mg/s before the improvement. Meanwhile, the strong oxidizing ions of ClO - were effectively adsorbed by the activated carbon plate, which in turn slowed down the corrosion of carbon steel by electrochemical water softening.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
CORROSION
·
2021
·Vol. 77
·期 11
·1192-1202
·
IF 1.77
Liu Wei,Yin Huayi,Du Kaifa,Yang Bing,Wang Dihua
Corrosion resistance of metals and alloys toward liquid metals determines the service performances and lifetime of the devices using liquid metals. This paper studies the static corrosion behaviors of iron, chromium, nickel, low carbon steel, and four types of stainless steels (SS410, SS430, SS304, and SS316L) in liquid Sb-Sn at 500°C, aiming to screen corrosion-resistant stainless steel for Li||Sb-Sn liquid metal batteries (LMBs). The corrosion rates of Fe and Ni are 0.94 μm/h and 6.03 μm/h after 160 h measurement, respectively. Cr shows a low corrosion rate of < 0.05 μm/h, which is due to the formation of a relatively stable Cr-Sb layer that may be able to prevent the interdiffusion between the solid substrate and liquid Sb-Sn. Ni has a high corrosion rate because the formed Ni-Sb and Ni-Sn compounds are soluble in the liquid Sb-Sn. The corrosion products of both pure metals and SS can be predicted by thermodynamic and phase diagram analysis. Among the four types of stainless steel, SS430 shows the best corrosion resistance toward liquid Sb-Sn with a corrosion rate of 0.19 μm/h. Therefore, a liquid Sb-Sn resistant material should have a high Cr content and a low Ni content, and this principle is applicable to design metallic materials not only for LMBs but also for other devices using liquid Sb- and Sn-containing liquid metals.
研究领域:
材料科学
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电化学
·
冶金学
✓ 已验证
DOI
高影响因子
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
·
2017
·
IF 2.962
Ee Li,Jiajia Wu,Dun Zhang,Yan Sun,Juna Chen
D-phenylalanine (D-Phe) was tested for its effect on the corrosion of Q235 carbon steel caused by Desulfovibrio sp. which belongs to sulfate reducing bacteria (SRB). Weight loss results indicated that the corrosion rate of Q235 coupons exposed to D-Phe was reduced. Much less pits were found on the surface of these coupons. It was found that pH and dissolved oxygen content of bacteria cultures as well as the growth of bacteria were not affected by D-Phe. However, the cell shape of D . sp. was changed to a more filamentous or spherical shape by treatment with D-Phe, and the structure of biofilms formed by bacteria with transformed shapes was looser and thinner. Moreover, the hydrogen sulfide production of D . sp. was inhibited by D-Phe. These results suggest that D-Phe may inhibit the corrosion process through two ways, i, D-Phe alters the bacteria shape, which inhibits the formation of biofilm and changes the structure of it consequently; ii, D-Phe reduces the production of hydrogen sulfide .
研究领域:
微生物腐蚀
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材料科学
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环境微生物学
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金属腐蚀与防护
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生物膜研究
✓ 已验证
DOI
高影响因子
Journal of Energy Storage
·
2023
·
IF 9.4
Fangzhao Pang,Yongxin Wu,Xiaowei Liu,Lei Guo,Shuaibo Gao,Peilin Wang,Dihua Wang,Huayi Yin
Lead-acid batteries (LABs) are commonly used in various energy-storage areas, but their lifetime is seriously limited by the corrosion of the positive grids in deep charge-discharge cycles. Among various factors, the composition of grid alloy is key to determining its corrosion behaviors . Herein, PbBaSnAl (PBSA) alloys with different contents of Ba are prepared by using an induction melter in an argon-filled glovebox. The results of electrochemical measurement show that the oxygen evolution potential of PBSA increases from 1.8586 V to 1.8815 V, and the corrosion rate decreases from 0.4949 mg·h −1 ·cm −2 to 0.2211 mg·h −1 ·cm −2 . The results of mechanical tests show that after Ba is added, the strain of the alloy increases and the fracture of the alloy decreases during grid creep. This work provides a promising Ba-containing positive grid alloy instead of the commercial PbCaSnAl (PCSA) grid alloy, which may prolong the service life of LABs and improve the application of LABs in energy storage areas.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Omega
·
2020
·
IF 2.87
Yongshan Tan,Hongfa Yu,Chengyou Wu
Basic magnesium sulfate cement is a type of green high-performance cementitious material. In order to exert its performance advantages and expand its application field, it is urgent to study the problem of steel corrosion in basic magnesium sulfate cement concrete (BMSCC). In this paper, linear polarization resistance (LPR) and electrochemical impedance spectroscopy (EIS) were used to study the corrosion behavior of steel bars in different strength grades of BMSCC in seawater. Based on the relationship between the corrosion current density and the immersion time, the corresponding time-varying model was obtained. The LPR and EIS results show that the corrosion potential and polarization resistance of steel bars in BMSCC decreased with the immersion time in the seawater environment. The fitting analysis indicated concordance between the corrosion rates with the logarithmic function time-varying model. Furthermore, the cracking time of the protective layer of BMSCC was analyzed based on the cracking time prediction model of Portland cement concrete and the mechanical properties of BMSCC.
研究领域:
土木工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Frontiers of Materials Science
·
2024
·Vol. 18
·期 3
·1-15
·
IF 2.5
Cui Zeqin,Hu Qifeng,Wang Jianzhong,Zhou Lei,Hao Xiaohu,Wang Wenxian,Li Weiguo,Cheng Weili,Chang Cheng
Zinc-based composites represent promising materials for orthopedic implants owing to their adjustable degradation rates and excellent biocompatibility. In this study, a series of Zn–10Mg– x HA ( x = 0–5 wt.%) composites with the core–shell structure were prepared through spark plasma sintering, and their microstructural, mechanical, and in vitro properties were systematically evaluated. Results showed that the doped hydroxyapatite (HA) is concentrated at the outer edge of the MgZn 2 shell layer. The compression strength of the Zn–10Mg–HA composite gradually decreased with the increase of the HA content, while its corrosion rate decreased initially and then increased. The corrosion resistance of the composite with the addition of 1 wt.% HA was improved compared to that of Zn–10Mg–0HA. However, the further increase of the HA content beyond 1 wt.% resulted in a faster degradation of the composite. Moreover, the Zn–10Mg–1HA composite significantly enhanced the activity of MC3T3-E1 osteoblasts. Based on such findings, it is revealed that the composite containing 1 wt.% HA exhibits superior overall properties and is anticipated to serve as a promising candidate for bone implant materials.
研究领域:
材料科学
·
生物材料
·
骨科
✓ 已验证
DOI
高影响因子
LANGMUIR
·
2024
·
IF 3.7
Xianmin Gong,Yi He,Liping Yan,Huilian Zhou,Yiling He,Kaijun Wei,Quangang Chen,Shijun Xu
In this study, vanadium carbide (VC) was used as the raw material to synthesize PDA-functionalized VC (P-VC). VC and P-VC were added as nanoreinforced materials to the Ni–W–B coating. The effects of the two nanomaterials on the morphology, wear resistance, and corrosion resistance of the Ni–W–B coatings were investigated and compared. The experimental results show that the surface of the Ni–W–B/P-VC coating is denser and more uniform than that of the Ni–W–B and Ni–W–B/VC coatings, and there are no obvious defects on the surface. According to the hardness test, the Ni–W–B/P-VC coating reaches the highest microhardness of 887.1 HV. According to the friction and wear tests, the Ni–W–B/P-VC coating has the shallowest scratches, the lowest average friction coefficient (COF = 0.274), and the lowest wear rate (9.578 × 10–8 mm2/N). The corrosion resistance is the best, the corrosion rate is 0.0456 mm/y, and the impedance value Rt reaches 14,501 Ω·cm2.
研究领域:
材料科学
·
表面工程
·
涂层技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS LETTERS
·
2022
·
IF 3.574
Yu Liu,Gan Yuan,Chunlei Guo,Chi-Vinh Ngo,Wei Li
Ethylene glycol (EG) is widely used as a cooling agent in factories, aviation, and automobiles. However, its corrosive nature can create significant damage and reduce the life cycle of devices. This paper compares three different methods to achieve the superhydrophobic anti-corrosion aluminum surfaces for working in an engine coolant environment. The methods are combinations between femtosecond laser fabrication and chemical coatings using Polydimethylsiloxane (PDMS) and Triethoxy-1H,1H,2H,2H-tridecafluoro-n-octylsilane (TTFOS). All the samples show superhydrophobicity with contact angles greater than 150°, and sliding angles smaller than 10°. The superhydrophobic surface (SHS) show the best corrosion rate up to three orders of magnitude compared to flat surfaces when working in an engine coolant environment. Moreover, corrosion inhibition efficiencies of the fabricated surfaces impress the best results greater than 98%. The anti-corrosion behavior of the SHS is explained. After comparing the performances of the surfaces fabricated by three methods, the most suitable method is proposed to produce anti-corrosion aluminum surfaces for applications using engine coolant as an environment.
研究领域:
材料科学
·
表面工程
·
腐蚀科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Omega
·
2024
·
IF 3.7
Xinyue Chen,Yongkang Cui,Shujuan Wang
In the realm of postcombustion carbon capture, diethylenetriamine (DETA), recognized for its substantial CO2 absorption capacity, presents a formidable challenge due to its corrosive impact on equipment. This study delves into the corrosion behavior of 20# carbon steel immersed in DETA solutions under varying conditions, employing weight loss and electrochemical methods. The investigation incorporates scanning electron microscopy/energy-dispersive spectroscopy and X-ray diffraction analyses for characterization. Corrosion experiments were also conducted in monoethanolamine (MEA) solutions for a comparative analysis. Results from the corrosion tests in DETA solutions mirror the temperature-dependent corrosion rate (CR) observed in MEA. However, a distinctive trend emerges as the CO2 loading of DETA increases from 0.2 mol CO2/mol amine to 1.2 mol CO2/mol amine, leading to a continuous decrease in the CR of carbon steel─contrary to MEA solutions. This anomaly is attributed to DETA’s robust complexing ability with metal ions and its elevated solubility of Fe2+ in solution. Additionally, an examination of the corrosion mechanism in the presence of oxygen was conducted through characterizing the specimen surface and solution precipitates postexperiment. The absence of a protective FeCO3 layer can be attributed to insufficient concentrations of free Fe2+ and CO32– in the solution, failing to achieve the minimum saturation required for protective film formation. The insights gained from studying the corrosion behavior of carbon steel in DETA solutions lay the groundwork for subsequent developments in corrosion inhibitors.
研究领域:
化学工程
·
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2019
·
IF 3.131
Yankun Xie,Weiqu Liu,Liyan Liang,Chunhua Liu,Sha He,Fengyuan Zhang,Hongyi Shi,Maiping Yang
In this study, in order to improve the hydrophobicity and corrosion protection of epoxy coatings, a fluorinated polyacrylate polymer containing epoxy groups (PFEMA) was designed and used to modify epoxy resin . FT-IR, 1 H-NMR and GPC were employed to characterize the structure of PFEMA polymer. Contact angle (CA), X-ray photoelectron spectrum (XPS), scanning electron microscope , Tafel curves, electrochemical impedance spectroscopy (EIS) and salt spray test were carried out to investigate the performance of fluorinated polyacrylate modified epoxy coatings. The incorporation of PFEMA polymer changes the hydrophilic nature of epoxy resin to hydrophobicity, and the CA shifts from 67° to 98° with the content of fluorinated polyacrylate increases from 0 to 10 wt%. EIS measurements show that the impedance modulus value of fluorinated epoxy coatings is higher compared to pure epoxy resin. Additionally, the corrosion rate also decreases and its value shifts from 4.223×10 −8 mm/year to the lowest value of 9.696×10 -9 mm/year with the increasing of fluorinated polyacrylate in epoxy resin, demonstrating that the corrosion resistance of epoxy coatings has been significantly strengthened after introduction of fluorinated polyacrylate.
研究领域:
材料科学
·
腐蚀科学
·
表面化学
·
高分子科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）