Abstract：Aiming at the challenges in quality evaluation of coating on coated plate such as long analysis time and complicated testing procedures, the mass fraction-depth spectra of four kinds of coated plate sample were analyzed by glow spectrometry for the quantitative, rapid and accurate evaluation of coating quality on coated plate. The information, including the thickness and quality of coating, the overall judgment of structure, and surface defects on coated plate, could be obtained. The elemental composition in coating was analyzed. The enrichment of harmful element (oxygen) in defected sample on substrate surface was effectively observed. The defect problems of coated plate could be improved by changing the technological conditions and increasing the reflowing temperature. The corrosion properties of coated plate at different temperatures were analyzed and studied using electrochemical method, i.e., polarization curve and electrochemical impedance technology. The results showed that the corrosion rate of galvanized plate changed slightly in temperature range of 0-40℃. However, when the temperature increased to 60℃, the corrosion rate increased rapidly. The surface micro-topography of normal and defected coated plate was analyzed and compared by scanning electron microscope energy disperse spectroscopy. It was found that the structure of defected coating was relatively loose. The coating was discontinuous with granular distribution. This structure could not effectively protect the structure. The proposed method found out the reason for defect problems, which guaranteed the evaluation results of coating quality.
王国栋.钢材涂镀技术发展现状和趋势[J].轧钢,2008,25(1):1-4.WANG Guo-dong.Development of coating technique of steel products[J].Steel Rolling,2008,25(1):1-4.
[2]
赵栋.中国涂镀板市场分析[J].科技视界,2016(2):267-270.ZHAO Dong.Analysis of Chinese coated plate market[J].Science&Technology Vision,2016(2):267-270.
[3]
曹瑞.镀锌产品锌层质量和厚度的测定方法[J].金属制品,2008,34(4):43-45.CAO Rui.Determination of mass and thickness in zinc-galvanized products[J].Steel Wire Products,2008,34(4):43-45.
[4]
刘守琼,刘迪,周西林.EDTA 络合滴定法测定彩钢板中锌层质量[J].山东化工,2015,44(16):108-109.LIU Shou-qiong,LIU Di,ZHOU Xi-lin.Determination of zinc layer quality in color steel by EDTA complexation titration[J].Shandong Chemical Industry,2015,44(16):108-109.
[5]
逄昆,郝文魁,吴俊升,等.海洋大气环境中电镀锌板的腐蚀行为与机理[J].腐蚀科学与防护技术,2016,28(3):221-228.PANG Kun,HAO Wen-kui,WU Jun-sheng,et al.Corrosion behavior of field-exposed electrogalvanized steel plate in marine atmosphere[J].Corrosion Science and Protection Technology,2016,28(3):221-228.
[6]
曹美霞,唐艳秋,陆永亮,等.清洗水中氯离子浓度对镀锡板的腐蚀影响[J].电镀与精饰,2015,37(11):24-26.CAO Mei-xia,TANG Yan-qiu,LU Yong-liang,et al.Influence of Cl- in rinse water on tin plate corrosion[J].Plating & Finishing,2015,37(11):24-26.
[7]
余卫华,张穗忠,于录军.钢铁材料表面成分及其深度分布的射频辉光放电光谱研究[J].冶金分析,2008,28(7):11-17.YU Wei-hua,ZHANG Sui-zhong,YU Lu-jun.Study on surface composition and depth analysis of steel by radio frequency glow discharge optical emission spectrometry[J].Metallurgical Analysis,2008,28(7):11-17.
[8]
刘栓,孙虎元,孙立娟.pH值和温度对镀锌钢在模拟锈层溶液中电化学腐蚀行为的影响[J].功能材料,2013,44(6):858-861.LIU Shuan,SUN Hu-yuan,SUN Li-juan.Effects of pH values and temperature on the electrochemical corrosion behavior of galvanized steel in simulated rust layer solution[J].Journal of Functional Materials,2013,44(6):858-861.
[9]
张红,杜翠薇,李晓刚.热镀锌板在3 种典型泥浆中的电化学阻抗谱特征[J].材料科学与工艺,2010,18(2):154-158.ZHANG Hong,DU Cui-wei,LI Xiao-gang.Study on mud corrosion of hot-dip galvanized steel sheet by electrochemical impedance spectroscopy[J].Materials Science ＆ Technology,2010,18(2):154-158.
[10]
王玉鹏,樊艳梅,孙亚洲.扫描电镜能谱仪对涂层的分析[J].涂料技术与文摘,2016,37(3):12-14.WANG Yu-peng,FAN Yan-mei,SUN Ya-zhou.Analysis of coating by scanning electron microscope energy spectrometer[J].Coatings Technology & Abstracts,2016,37(3):12-14.
