The Experts below are selected from a list of 5901 Experts worldwide ranked by ideXlab platform

Yan Zhang - One of the best experts on this subject based on the ideXlab platform.

  • compositing fluid infused in superhydrophobic cu oh 2 nanoneedle matrix to inhibit abiotic and microbiologically induced Corrosion of cu in Seawater environment
    Progress in Organic Coatings, 2020
    Co-Authors: Jingkun Liu, Yibo Ouyang, Ri Qiu, Yan Zhang
    Abstract:

    Abstract Although superhydrophobicity (SHP) and liquid infused surface (LIS) bio-inspired by the lotus leaf and pitcher plant have afforded high Corrosion inhibition to metals, they still have the drawbacks such as short term duration and drainage in water phase. In this report, using a facile electrochemical anodization approach, Cu(OH)2 nanoneedle matrix is built onto Cu substrate. The surface modification with dodecanethiol enables superhydrophobicity wettability. Oil and hydrophobic ZnO nanoparticle obtained by modification with dodecanethiol realize compositing liquid infused surface (CLIS) on Cu surface. For superhydrophobic Cu(OH)2 layer, its Corrosion inhibition to Cu is limited. However, when Cu metal is covered with compositing fluid, the Corrosion inhibition capability to abiotic and biotic Corrosion induced by sulfate reducing bacteria has been remarkably enhanced. After immersion in Seawater for 20 days, Z0.01Hz of CLIS Cu is still as high as 1.30 × 109 Ω·cm2, confirming the higher protection efficiency than SHP and LIS coverage. For biotic Corrosion inhibition, after soaking for 10 days in sulfate reducing bacteria suspension, Z0.01 Hz of CLIS Cu still remains 1.25 × 105 Ω·cm2, which is much higher than SHP Cu and LIS Cu. Hydrophobic nanoparticles work as the additional absorption matrix to further anchor oil phase, so that drainage will be avoided. The duration of the coating is enhanced. Therefore, CLIS layer has afforded a versatile route to protect Cu from both Seawater Corrosion and microbiologically induced Corrosion.

Peisen Zhao - One of the best experts on this subject based on the ideXlab platform.

  • freeze thaw resistance and Seawater Corrosion resistance of optimized tannery sludge metakaolin based geopolymer
    Construction and Building Materials, 2020
    Co-Authors: Mantong Jin, Zhuohui Wang, Fan Lian, Peisen Zhao
    Abstract:

    Abstract In this study, tannery sludge was used to synthesize a geopolymer with optimum mixing proportions of raw material determined using Design-Expert. Compressive strength and total chromium leaching concentration were considered as markers for evaluating the performance of the geopolymer as a building material. The durability of the geopolymer in terms of freeze-thaw resistance under sulfate attack and Seawater Corrosion resistance was also studied. X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy tests were performed for the micro-analysis. The results demonstrate that the geopolymer exhibited optimal performance when metakaolin, tannery sludge, sodium silicate, and sodium hydroxide used for the synthesis were mixed in the ratios 50.34%, 13.48%, 28.95%, and 7.23% (weight%), respectively (deionized water was added in a liquid-solid ratio (L/S) of 1:10 (mL/g)). For these mix proportions, the compressive strength of the geopolymer reached 50.37 MPa, while the total chromium leaching concentration was 2.440 mg/L (the chromium retention rate was 97.93%) at 7 days. Meanwhile, the geopolymer exhibited good resistance to Seawater Corrosion and certain anti-sulfate attack-freeze-thaw coupling ability. After 21 days of Seawater Corrosion test and 14 cycles of sulfate attack-freeze-thaw test, the compressive strength of the geopolymer was 32.64 MPa and 19.48 MPa, respectively. Thus, the geopolymer has potential as a building material in cold coastal environments.

Jingkun Liu - One of the best experts on this subject based on the ideXlab platform.

  • compositing fluid infused in superhydrophobic cu oh 2 nanoneedle matrix to inhibit abiotic and microbiologically induced Corrosion of cu in Seawater environment
    Progress in Organic Coatings, 2020
    Co-Authors: Jingkun Liu, Yibo Ouyang, Ri Qiu, Yan Zhang
    Abstract:

    Abstract Although superhydrophobicity (SHP) and liquid infused surface (LIS) bio-inspired by the lotus leaf and pitcher plant have afforded high Corrosion inhibition to metals, they still have the drawbacks such as short term duration and drainage in water phase. In this report, using a facile electrochemical anodization approach, Cu(OH)2 nanoneedle matrix is built onto Cu substrate. The surface modification with dodecanethiol enables superhydrophobicity wettability. Oil and hydrophobic ZnO nanoparticle obtained by modification with dodecanethiol realize compositing liquid infused surface (CLIS) on Cu surface. For superhydrophobic Cu(OH)2 layer, its Corrosion inhibition to Cu is limited. However, when Cu metal is covered with compositing fluid, the Corrosion inhibition capability to abiotic and biotic Corrosion induced by sulfate reducing bacteria has been remarkably enhanced. After immersion in Seawater for 20 days, Z0.01Hz of CLIS Cu is still as high as 1.30 × 109 Ω·cm2, confirming the higher protection efficiency than SHP and LIS coverage. For biotic Corrosion inhibition, after soaking for 10 days in sulfate reducing bacteria suspension, Z0.01 Hz of CLIS Cu still remains 1.25 × 105 Ω·cm2, which is much higher than SHP Cu and LIS Cu. Hydrophobic nanoparticles work as the additional absorption matrix to further anchor oil phase, so that drainage will be avoided. The duration of the coating is enhanced. Therefore, CLIS layer has afforded a versatile route to protect Cu from both Seawater Corrosion and microbiologically induced Corrosion.

Mantong Jin - One of the best experts on this subject based on the ideXlab platform.

  • freeze thaw resistance and Seawater Corrosion resistance of optimized tannery sludge metakaolin based geopolymer
    Construction and Building Materials, 2020
    Co-Authors: Mantong Jin, Zhuohui Wang, Fan Lian, Peisen Zhao
    Abstract:

    Abstract In this study, tannery sludge was used to synthesize a geopolymer with optimum mixing proportions of raw material determined using Design-Expert. Compressive strength and total chromium leaching concentration were considered as markers for evaluating the performance of the geopolymer as a building material. The durability of the geopolymer in terms of freeze-thaw resistance under sulfate attack and Seawater Corrosion resistance was also studied. X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy tests were performed for the micro-analysis. The results demonstrate that the geopolymer exhibited optimal performance when metakaolin, tannery sludge, sodium silicate, and sodium hydroxide used for the synthesis were mixed in the ratios 50.34%, 13.48%, 28.95%, and 7.23% (weight%), respectively (deionized water was added in a liquid-solid ratio (L/S) of 1:10 (mL/g)). For these mix proportions, the compressive strength of the geopolymer reached 50.37 MPa, while the total chromium leaching concentration was 2.440 mg/L (the chromium retention rate was 97.93%) at 7 days. Meanwhile, the geopolymer exhibited good resistance to Seawater Corrosion and certain anti-sulfate attack-freeze-thaw coupling ability. After 21 days of Seawater Corrosion test and 14 cycles of sulfate attack-freeze-thaw test, the compressive strength of the geopolymer was 32.64 MPa and 19.48 MPa, respectively. Thus, the geopolymer has potential as a building material in cold coastal environments.

Shenhua Song - One of the best experts on this subject based on the ideXlab platform.

  • degradation of basalt fibre and glass fibre epoxy resin composites in Seawater
    Corrosion Science, 2011
    Co-Authors: Bin Wei, Hailin Cao, Shenhua Song
    Abstract:

    Abstract Epoxy resins reinforced, respectively, by basalt fibres and glass fibres were treated with a Seawater solution for different periods of time. Both the mass gain ratio and the strength maintenance ratio of the composites were examined after the treatment. The fracture surfaces were characterized using scanning electron microscopy. The tensile and bending strengths of the Seawater treated samples showed a decreasing trend with treating time. In general, the anti-Seawater Corrosion property of the basalt fibre reinforced composites was almost the same as that of the glass fibre reinforced ones. Based on the experimental results, possible Corrosion mechanisms were explored, indicating that an effective lowering of the Fe 2+ content in the basalt fibre could lead to a higher stability for the basalt fibre reinforced composites in a Seawater environment.