The Application of High-Velocity-Oxygen-Fuel Spray Amorphous Ferrous Alloy Coating to Improve the Erosion Corrosion and Tribocorrosion Performance of Steel in Tidal Zone Environment

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基本資料

Project title

Code/計畫編號

MOST109-2221-E019-041

Translated Name/計畫中文名

以鐵基非晶質合金高速火焰噴塗製程對臨海潮間帶環境防沖蝕腐蝕及腐蝕磨耗技術應用

Project Coordinator/計畫主持人

Hung-Bin Lee

Funding Organization/主管機關

National Science and Technology Council

Department/Unit

Department of Optoelectronics and Materials Technology

Website

https://www.grb.gov.tw/search/planDetail?id=13539775

Year

2020

Start date/計畫起

01-08-2020

Expected Completion/計畫迄

31-07-2021

Bugetid/研究經費

907千元

ResearchField/研究領域

土木水利工程

Sustainable energy sources such as photovoltaic cells and offshore windmills have been intensively promoted by our government. However, Taiwan is located in subtropical region and surrounded by seas. High moisture, salt, and marine biological specie contents in the air, in addition to the erosion by waves and the radiation from sunlight, pose serious corrosion threats from the marine environment. In the first year of this study, the high-velocity-oxygen-fuel (HVOF) spray technology will be employed in the preparation amorphous ferrous alloy coating on steel substrate. Both Fe47-Cr15-Mo15-C15-B6-Y2(at%) and Fe34-Cr28-Mo15-C15-B6-Y2(at%) alloys will be adopted in coating process. Corrosion environment, considering the submersion in sea water, thermal fluctuation and erosion, to simulate the time-varying surrounding will be used in the corrosion study on the prepared coating. Regarding the wave and tide impact, even including the influences of typhoons, an erosion corrosion tester will be employed to study the possible effects on coating from wave impacts. During the second year of this project, the tribocorrosion of the HVOF prepared coatings from the two amorphous ferrous alloys will be conducted in different electrolytes (3.5%NaCl, 1mol/L H2SO4, 1mol/L NaOH). A block-on-ring test mode will be adopted in the tribocorrosion experiments to explore the influences of electrolyte, displacement amplitude, speed and loading, etc. on the wear of the coating. Moreover, the wetting property of the prepared coating will also be investigated. The correlation among the HVOF process parameters, coating’s surface roughness and hydrophobicity will be examined to reveal the underlined mechanisms in controlling the coating’s hydro affinity. Finally, detailed analyses will be performed including mechanical properties (microhardness and surface roughness), X-ray diffraction (XRD), contact angle analysis (hydrophilic/hydrophobic property), differential scanning calorimetry/thermogravimetric analysis (DSC/TGA), electron microscopy(OM/SEM/TEM-EDS), X-ray photoelectron spectroscopy (XPS), electrochemical analysis and tribocorrosion measurement. With the advantages of low product cost, superior wear and corrosion resistance, the successful application of this amorphous ferrous alloy demonstrated in this study should promote its potential in the wider and newer industrial applications. 太陽能電廠與海上風電是近年來政府大力發展的新能源，但台灣地處亞熱帶相對濕度與空氣中含鹽量均高(3.5%)，並存在著大量海洋微生物，加之海浪衝擊和陽光照射，海洋腐蝕環境較為嚴酷。第一年，本研究以高速火焰噴塗技術(HVOF)製備鐵基非晶質合金鍍層，合金體系中以Cr、Mo、C、B、Y及其含量對鐵基非晶質合金影響。採用Fe47-Cr15-Mo15-C15-B6-Y2(at%)及Fe34-Cr28-Mo15-C15-B6-Y2(at%)，其進行噴塗鐵基非晶質合金鍍層。隨後，模擬台灣氣候臨海水下環境，冷熱交換環境及沖蝕實驗，探討含鹽環境下溫度交變對鍍層所致腐蝕。針對波浪與潮汐部分甚至颱風引發強大海浪沖擊，運用腐蝕沖蝕實驗機，瞭解海浪沖擊對鍍層的影響。第二年，首先，鐵基非晶質合金鍍層對不同成分材料在不同介質環境(3.5%NaCl,1mol/L H2SO4,1mol/L NaOH)中，研究液體介質、位移幅值、負載等因素對腐蝕磨耗的影響，採用block-on-ring 方式進行磨耗腐蝕量測，研究鍍層在腐蝕磨耗下的摩擦磨損行為，分析載荷和滑移速率對磨損性能的影響。其二，研究鍍層的潤濕行為，針對噴塗-表面粗糙度-親/疏水性能之間關聯性，並深入探討鍍層親/疏水的機理。最後，鍍層檢測分析包含力學性質測試(微硬度、粗糙度)、X射線繞射(XRD)、表面接觸角分析(親/疏水性能)、熱差/熱重分析(DSC/TGA)、電子顯微鏡（OM/SEM/TEM-EDS）、X光光電子能譜儀(XPS)、電化學測量及腐蝕磨耗試驗。透過低廉生產成本，豐富自然資源，優異耐磨耗、耐腐蝕性能，促進鐵基非晶質鍍層更加廣泛工程應用必將迎向新一輪的發展。

Keyword(s)

高速火焰噴塗技術
鐵基非晶質合金鍍層
沖蝕
腐蝕磨耗
High-Velocity-Oxygen-Fuel (HVOF)
Fe-based amorphous metallic coatings
erosion-corrosion
tribocorrosion

DSpace CRIS

The Application of High-Velocity-Oxygen-Fuel Spray Amorphous Ferrous Alloy Coating to Improve the Erosion Corrosion and Tribocorrosion Performance of Steel in Tidal Zone Environment

基本資料

Description