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Cr元素含量对镍基合金涂层抗热腐蚀行为的影响

陈丽艳, 程杰, 吴玉萍, 龙伟漾

陈丽艳, 程杰, 吴玉萍, 龙伟漾. Cr元素含量对镍基合金涂层抗热腐蚀行为的影响[J]. 焊接学报, 2017, 38(4): 103-106. DOI: 10.12073/j.hjxb.20170424
引用本文: 陈丽艳, 程杰, 吴玉萍, 龙伟漾. Cr元素含量对镍基合金涂层抗热腐蚀行为的影响[J]. 焊接学报, 2017, 38(4): 103-106. DOI: 10.12073/j.hjxb.20170424
CHEN Liyan, CHENG Jie, WU Yuping, LONG Weiyang. Influence of Cr content on hot corrosion behavior of Nickel-based alloy coatings at high temperature[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2017, 38(4): 103-106. DOI: 10.12073/j.hjxb.20170424
Citation: CHEN Liyan, CHENG Jie, WU Yuping, LONG Weiyang. Influence of Cr content on hot corrosion behavior of Nickel-based alloy coatings at high temperature[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2017, 38(4): 103-106. DOI: 10.12073/j.hjxb.20170424

Cr元素含量对镍基合金涂层抗热腐蚀行为的影响

Influence of Cr content on hot corrosion behavior of Nickel-based alloy coatings at high temperature

  • 摘要: 采用高速电弧喷涂技术在20G钢基体表面制备三种铬含量不同的镍基合金涂层.光学显微镜、X射线衍射、扫描电镜和能谱分析等技术对涂层微观组织结构、相组成及成分进行分析.选用摩尔比为7:3的Na2SO4+K2SO4水溶液涂敷刷在涂层表面,分析涂层在650℃下的抗热腐蚀性能.结果表明,涂层的腐蚀动力学曲线基本符合抛物线规律;四种涂层表面均形成了致密连续的NiO和Cr2O3保护膜.随着铬含量升高,涂层表面氧化膜中Cr2O3含量升高,NiO逐渐减少,涂层抗热腐蚀性能明显提高.Ni-30Cr,Ni-45Cr,Ni-50Cr涂层抗热腐蚀性能分别为20G钢基体的10,15和20倍;Ni-50Cr涂层抗腐蚀性能是美国Tafa 45CT材料的1.4倍.
    Abstract: Three coatings were deposited on 20G steel by high velocity arc spay technique. Microstructures of these coatings were characterized by optical microscope, scanning electric microscope equipped with EDS. Phases were identified by X-ray diffraction analysis. Hot corrosion trials of these high Cr content coatings were conducted under the mixed sulfates Na2SO4+K2SO4 layer at 650 ℃. The results showed that hot corrosion kinetic curves fitted well to the parabolic laws, NiO and Cr2O3 protective oxide scales have been formed on the surface of four corroded coatings. As the increasing Cr content, the Cr2O3 content in the protective oxide scales was gradually increased and the NiO content was reduced, resulted in a significantly enhance in hot corrosion resistance. The corrosion resistance properties of the Ni-30Cr, Ni-45Cr and Ni-50Cr were approximately 10, 15 and 20 times higher than that of 20G steel. In addition, the hot corrosion resistance of Ni-50Cr coating was about 1.4 times of that of Ni-Cr-Ti coating (Tafa 45CT).
  • [1] Singh H, Sidhu B, Puri D, et al. Use of plasma spray technology for deposition of high temperature oxidation/corrosion resistant coatings-a review[J]. Materials and Corrosion, 2007, 58(2): 92-102.
    [2] Kawahara Y. Application of high temperature corrosion-resistant materials and coatings under severe corrosive environment in waste-to-energy boilers[J]. Journal of Thermal Spray Technology, 2007, 16(2): 202-213.
    [3] 郭文敏, 吴玉萍, 李改叶, 等. 低碳钢表面电弧喷涂层 FeNiCr/Cr3C2与NiCrTi 的热腐蚀性能[J]. 材料热处理学报, 2012, 32(11): 128-134. Guo Wenmin, Wu Yuping, Li Gaiye, et al. Hot corrosion of FeNiCr/Cr3C2 and NiCrTi arc spray coatings on mild steel[J]. Transactions of Materials and Heat Treatment, 2012, 32(11): 128-134.
    [4] Young D J. High temperature oxidation and corrosion of metals[M]. Netherlands:Elsevier, 2008.
    [5] Bala N, Singh H, Prakash S. High-temperature oxidation studies of cold-sprayed Ni-20Cr and Ni-50Cr coatings on SAE 213-T22 boiler steel[J]. Applied Surface Science, 2009, 255(15): 6862-6869.
    [6] 王 倩, 吴玉萍, 李改叶, 等. 超音速火焰喷涂Cr3C2/NiCr涂层抗加沙空蚀性分析[J]. 焊接学报, 2013, 34(2): 35-39. Wang Qian, Wu Yuping, Li Gaiye, et al. Analysis of silt cavitation erosion resistance of coating prepared by high velocity oxy-fuel thermal spraying[J]. Transactions of the China Welding Institution, 2013, 34(2): 35-39.
    [7] 祝弘滨, 李 辉, 栗卓新. 热喷涂TiB2-Ni复合涂层组织结构和力学性能[J]. 焊接学报, 2014,35(11): 43-46. Zhu Hongbin, Li Hui, Li Zhuoxin. Microstructure and mechanical properties of TiB2-Ni com-posite coating[J]. Transactions of the China Welding Institution, 2014, 35(11): 43-46.
    [8] Tao Kai, Zhou Xianglin, Cui Hua, et al. Oxidation and hot corrosion behaviors of HVAF-sprayed conventional and nanostructured NiCrC coatings[J]. Transactions of Nonferrous Metals Society of China, 2009, 19(5): 1151-1160.
    [9] 赵晓舟, 周 正, 贺定勇, 等. 电弧喷涂镍基涂层腐蚀及磨损行为[J]. 焊接学报, 2013, 34(4): 48-52. Zhao Xiaozhou, Zhou Zheng, He Dingyong, et al. Corrosion and wear behavior of wire-arc sprayed Ni-based coatings[J]. Transactions of the China Welding Institution, 2013, 34(4): 48-52.
  • 期刊类型引用(1)

    1. 薛海涛,魏鑫,郭卫兵,张小明. 活性元素Ti和SiO_2界面结合机制的第一性原理计算. 焊接学报. 2020(01): 67-71+100-101 . 本站查看

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  • 收稿日期:  2014-11-13

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