六方氮化硼改性硅烷膜耐蚀性能研究

doi:10.11902/1005.4537.2020.176

中国腐蚀与防护学报

2021, Vol. 41

Issue (6): 864-870 DOI: 10.11902/1005.4537.2020.176

研究报告

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六方氮化硼改性硅烷膜耐蚀性能研究

丁玉康¹, 陈国美², 倪自丰¹(

), 刘雅玄¹, 钱善华¹, 卞达¹, 赵永武¹

^1.江南大学机械工程学院无锡 214122
^2.无锡商业职业技术学院机电工程学院无锡 214122

Corrosion Resistance of Silane Film Modified by Hexagonal Boron Nitride

DING Yukang¹, CHEN Guomei², NI Zifeng¹(

), LIU Yaxuan¹, QIAN Shanhua¹, BIAN Da¹, ZHAO Yongwu¹

^1.College of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
^2.School of Mechanical and Electrical Engineering, Wuxi Vocational Institute of Commerce, Wuxi 214122, China

全文: PDF(10895 KB) HTML

摘要:

采用多巴胺对氮化硼进行非共价改性，通过SEM、红外光谱和TGA对粉末进行了表征。使用浸泡法在40Cr合金钢表面制备了掺杂改性氮化硼 (mBN) 的硅烷复合膜，运用SEM、红外光谱、润湿性测试以及动电位极化曲线研究了硅烷复合膜的耐蚀性能。结果表明，聚多巴胺成功附着在氮化硼表面，掺杂mBN的硅烷膜厚度增大至1.812 μm，mBN/BTESPT硅烷复合膜的表面接触角达到91.97°，动电位腐蚀电流密度为9.187×10^-8 A/cm²，耐蚀性能相比单一硅烷膜提高了约30倍，在中性盐雾测试中表现出较好的耐蚀性。mBN通过对硅烷膜的物理填充与化学键结合，阻碍了腐蚀介质的扩散，显著增强了金属的耐蚀性能。

关键词 ：硅烷膜, 六方氮化硼, 改性, 耐蚀性

Abstract：

Powders of boron nitride were non-covalently modified with dopamine, and then composite silane coatings dopped with non-covalently modified boron nitride were prepared on 40Cr alloy steel surface via socking method. The modified powder was characterized by SEM, FTIR and TGA. The corrosion resistance of silane composite film was studied by SEM, FTIR, wettability measurement and potentiodynamic polarization curve. The results showed that the polydopamine successfully coats the boron nitride particles and adheres them onto the 40Cr steel surface, the thickness of the mBN-doped silane film increased to 1.812 μm, and the surface contact angle of the mBN/BTESPT silane composite film reached 91.97°. The corrosion current density of the composite film coated steel was 9.187×10^-8 A/cm², which implies that the corrosion resistance of the composite film was about 30 times higher than that of the bare silane film, and it showed also better corrosion resistance in the neutral salt spray test. Through the physical filling and chemical bonding of silane film, mBN hindered the diffusion of corrosion medium and significantly enhanced the corrosion resistance of metal.

Key words： silane film hexagonal boron nitride modification corrosion resistance

收稿日期: 2020-09-27

ZTFLH:

TG174.4

基金资助:国家自然科学基金(51675232)

通讯作者: 倪自丰 E-mail: nizf@jiangnan.edu.cn

Corresponding author: NI Zifeng E-mail: nizf@jiangnan.edu.cn

作者简介: 丁玉康，男，1996年生，硕士生

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引用本文:

丁玉康, 陈国美, 倪自丰, 刘雅玄, 钱善华, 卞达, 赵永武. 六方氮化硼改性硅烷膜耐蚀性能研究[J]. 中国腐蚀与防护学报, 2021, 41(6): 864-870.
Yukang DING, Guomei CHEN, Zifeng NI, Yaxuan LIU, Shanhua QIAN, Da BIAN, Yongwu ZHAO. Corrosion Resistance of Silane Film Modified by Hexagonal Boron Nitride. Journal of Chinese Society for Corrosion and protection, 2021, 41(6): 864-870.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2020.176 或 https://www.jcscp.org/CN/Y2021/V41/I6/864

图1 BN粉末与mBN的SEM形貌

图2 BN与mBN的红外光谱图

图3 BN与mBN的热失重曲线

图4 不同试样的表面形貌图

图5 BTESPT膜与mBN/BTESPT膜的FT-IR图

图6 不同试样接触角测试结果

图7 不同处理试样的Tafel曲线

表1 Tafel动电位腐蚀参数

图8 不同试样在盐雾实验下的表面形貌

图9 mBN/BTESPT膜的成膜示意图

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