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한국부식방식학회(구 한국부식학회)> Corrosion Science and Technology

Corrosion Science and Technology update

  • : 한국부식방식학회(구 한국부식학회)
  • : 공학분야  >  금속공학
  • : KCI등재
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  • : 연속간행물
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  • : 1598-6462
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  • : 한국부식학회지(~2001)→Corrosion Science and Technology(2002~)

수록정보
수록범위 : 1권1호(2002)~19권2호(2020) |수록논문 수 : 814
Corrosion Science and Technology
19권2호(2020년 04월) 수록논문
최근 권호 논문
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KCI등재

1Effect of Ti Intermediate Layer on Properties of HAp Plasma Sprayed Biocompatible Coatings

저자 : Seisho Take , Tusyoshi Otabe , Wataru Ohgake , Taro Atsumi

발행기관 : 한국부식방식학회(구 한국부식학회) 간행물 : Corrosion Science and Technology 19권 2호 발행 연도 : 2020 페이지 : pp. 51-56 (6 pages)

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The objective of this study was to improve properties of plasma sprayed HAp layer to titanium substrate by introducing an intermediate layer with two different methods. Before applying Zn doped HAp coating on titanium substrate, an intermediate layer was introduced by titanium plasma spray or titanium anodization. Heat treatments were conducted for some samples after titanium intermediate layer was formed. Zn doped HAp top layer was applied by plasma spraying. Three-point bending test and pull-off adhesion test were performed to determine the adhesion of Zn doped HAp coatings to substrates. Long-term credibility of Zn doped HAp plasma sprayed coatings on titanium was assessed by electrochemical impedance measurements in Hanks' solution. It was found that both titanium plasma sprayed and titanium anodized intermediate layer had excellent credibility. Strong adhesion to the titanium substrate was confirmed after 12 weeks of immersion for coating samples with titanium plasma sprayed intermediate layer. Samples with titanium anodized intermediate layer showed good bending strength. However, they showed relatively poor resistance against pulling off. The thickness of titanium anodized intermediate layer can be controlled much more precisely than that of plasma sprayed one, which is important for practical application.

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2Corrosion Resistance of Mg-Added Galvannealed Steel Sheets with Nano-Composite Coating

저자 : Du-hwan Jo , Sang-man Yun , Doo-jin Paik , Myung-soo Kim , Moon-hi Hong

발행기관 : 한국부식방식학회(구 한국부식학회) 간행물 : Corrosion Science and Technology 19권 2호 발행 연도 : 2020 페이지 : pp. 57-65 (9 pages)

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As competition among global automakers intensifies, demand for materials that are better in price and performance is increasing. While steel and plastic materials compete for automotive fuel tanks, plastic materials have advantages such as light weight for automobiles. However, they have high prices. Accordingly, in this paper, four types of Zn-X plated steel sheets, electroplating (X = none, Sn) and galvannealed (X = Fe, Fe-Mg), were manufactured and their applicability as a fuel tank material was evaluated. Nano-composite coating solution with good conductivity was treated on the surface of plated steels using a roll coater and then cured through induction furnace to improve corrosion resistance. Quality characteristics such as corrosion resistance, fuel resistance to diverse gasoline and diesel fuels, and seam weldability were evaluated for the above plated steels. Their properties were compared and analyzed with conventional Zn-Ni electroplating steels. Among the above plated steels, Zn-Fe-Mg galvannealed steels coated with nano-composite coating exhibited better properties than other steels. Detailed experimental results suggest that evenly distributed Mg elements on the coating layer play a key role in the enhanced quality performance.

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3Study on Corrosion Law of Large Crude Oil Storage Tank Floor and Risk-Based Inspection and Maintenance Technology

저자 : Fang-wei Luo , Ran Ran , Lei Wang

발행기관 : 한국부식방식학회(구 한국부식학회) 간행물 : Corrosion Science and Technology 19권 2호 발행 연도 : 2020 페이지 : pp. 66-74 (9 pages)

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In this paper, the author's team has carried out a comparative experimental study on the corrosion characteristics of Q235 steel commonly used in large-scale storage tanks under the specific bottom water environment found with Russian and Daqing crude oil. It was found that there is a certain degree of uniform or local corrosion on the tank floor depending on the kind of bottom water. The bottom water corrosion of Daqing crude oil is a uniform corrosion caused by carbon dioxide. While the Russian crude oil bottom water corrosion is clearly local corrosion caused by co-corrosion of carbon dioxide and hydrogen sulfide, here the corrosion rate is obviously higher than that caused by Daqing crude oil. There are two modes of storage tank inspection and maintenance that have been currently adopted by Chinese refining and chemical enterprises: a regular inspection mode and a API581-2016 risk-based detection mode. These modes have been effectively combined to form an intelligent tank inspection and maintenance mode, software tools to support this intelligent inspection and maintenance management have been developed.

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4Effects of NaCl Concentration and Solution Temperature on the Galvanic Corrosion between CFRP and AA7075T6

저자 : S. Y. Hur , K. T. Kim , Y. R. Yoo , Y. S. Kim

발행기관 : 한국부식방식학회(구 한국부식학회) 간행물 : Corrosion Science and Technology 19권 2호 발행 연도 : 2020 페이지 : pp. 75-81 (7 pages)

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To reduce structural weight, light metals, including aluminum and magnesium alloys, have been widely used in various industries such as aircraft, transportation and automobiles. Recently, composite materials such as Carbon Fiber Reinforced Plastics (CFRP) and Graphite Epoxy Composite Material (GECM) have also been applied. However, aluminum and its alloys suffer corrosion from various factors, which include aggressive ions, pH, solution temperature and galvanic contact by potential difference. Moreover, carbon fiber in CFRP and GECM is a very efficient cathode, and very noble in the galvanic series. Galvanic contact between carbon fiber composites and metals in electrolytes such as rain or seawater, is highly undesirable. Notwithstanding the potentially dangerous effects of chloride and temperature, there is little research on galvanic corrosion according to chloride concentration and temperature. This work focused on the effects of chloride concentration and solution temperature on AA7075T6. The increased galvanic corrosion between CRFP and AA7075T6 was evaluated by electrochemical experiments, and these effects were elucidated.

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5Synthesis and Characterization of Hydrotalcite/Graphene Oxide Containing Benzoate for Corrosion Protection of Carbon Steel

저자 : Thuy Duong Nguyen , Boi An Tran , Ke Oanh Vu , Anh Son Nguyen , Anh Truc Trinh , Gia Vu Pham , Thi Xuan Hang To , Thanh Thao Phan

발행기관 : 한국부식방식학회(구 한국부식학회) 간행물 : Corrosion Science and Technology 19권 2호 발행 연도 : 2020 페이지 : pp. 82-88 (7 pages)

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This work examined the corrosion protection performance of benzoate loaded hydrotalcite/graphene oxide (HT/GO-BZ) for carbon steel. HT/GO-BZ was fabricated by the co-precipitation method and characterized by infrared spectroscopy, X-ray diffraction, and scanning electronic microscopy. The corrosion inhibition action of HT/GO-BZ on carbon steel in 0.1 M NaCl solution was evaluated by electrochemical measurements. The benzoate content in HT/GO-BZ was determined by UV-Vis spectroscopy. Subsequently, the effect of HT/GO-BZ on the corrosion resistance of the water-based epoxy coating was investigated by the salt spray test. The obtained results demonstrated the intercalation of benzoate and GO in the hydrotalcite structure. The benzoate content in HT/GO-BZ was about 16%. The polarization curves of the carbon steel electrode revealed anodic corrosion inhibition activity of HT/GO-BZ and the inhibition efficiency was about 95.2% at a concentration of 3g/L. The GO present in HT/GO-BZ enhanced the inhibition effect of HT-BZ. The presence of HT/GO-BZ improved the corrosion resistance of the waterborne epoxy coating.

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6스프링클러 구리배관의 공식 파손 억제

저자 : 서상희 ( Sang Hee Suh ) , 서영준 ( Youngjoon Suh ) , 이종혁 ( Jonghyuk Lee ) , 권혁상 ( Hyuksang Kwon )

발행기관 : 한국부식방식학회(구 한국부식학회) 간행물 : Corrosion Science and Technology 19권 2호 발행 연도 : 2020 페이지 : pp. 89-99 (11 pages)

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The inhibition of pitting corrosion failure of copper sprinkler tubes in wet sprinkler systems was studied. First, an apparatus and technology for removing air in the sprinkler tubes by vacuum pumping and then filling the tubes with water were developed. Using this apparatus and technology, three methods for inhibiting the pitting corrosion of the copper sprinkler tubes installed in several apartment complexes were tested. The first one was filling the sprinkler tubes with water bubbled by high-pressure nitrogen gas to reduce the dissolved oxygen concentration to lower than 2 ppm. In the second method, the dissolved oxygen concentration of water was further reduced to lower than 0.01 ppm by sodium sulfite. In the third method, the sprinkler tubes were filled with benzotriazole (BTAH) dissolved in water. The third method was the most effective, reducing the failure frequency of the sprinkler tubes due to pitting corrosion by more than 80%. X-ray photoelectron spectroscopy analyses confirmed that a Cu-BTA layer was well coated on the inside surface of the corrosion pit, protecting it from corrosion. A potentiodynamic polarization test showed that BTAH should be very effective in reducing the corrosion rate of copper in the acidic environment of the corrosion pit.

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7조선·해양 기자재용 강재의 내식성에 미치는 분체도장 중 산화물 첨가의 영향

저자 : 박진성 ( Jin-seong Park ) , 류승민 ( Seung Min Ryu ) , 정영재 ( Yeong Jae Jeong ) , 김성진 ( Sung Jin Kim )

발행기관 : 한국부식방식학회(구 한국부식학회) 간행물 : Corrosion Science and Technology 19권 2호 발행 연도 : 2020 페이지 : pp. 100-107 (8 pages)

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The demand for powder-coated steel used in the marine industry is increasing owing to their superior corrosion resistance. However, the powder coatings used in commercial products can deteriorate easily by the penetration of brine. In an attempt to suppress brine penetration into the powder coating and significantly increase the corrosion resistance, three types of oxide particles were added to the coating. Electrochemical impedance spectroscopy tests in 3.5% NaCl solution were performed to evaluate the corrosion behaviors of the powder coating with oxide particles. The results showed that the addition of SiO2 particles to a powder coating severely decreased the corrosion resistance due to the easy detachment of agglomerated SiO2 particles with a coarse size from the coating layer. In contrast, the TiO2 and SnO2-added coatings showed better corrosion resistance, and the TiO2-added coating performed best in the test conducted at room temperature. However, conflicting results were obtained from tests conducted at a higher temperature, which may be attributed to the effective suppression of brine penetration by the fine SnO2 particles uniformly distributed in the coating.

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