不锈钢表面超疏水Ni/TiO2复合镀层的制备及力学性能研究

姚鑫, 胡传波, 尹华伟, 崔政, 吕丹

doi:10.16577/j.issn.1001-1560.2022.0310

材料保护 >

2022 , Vol. 55 >Issue 11: 69 - 77

DOI: https://doi.org/10.16577/j.issn.1001-1560.2022.0310

工艺探讨

不锈钢表面超疏水Ni/TiO₂复合镀层的制备及力学性能研究

展开

¹重庆三峡学院环境与化学工程学院三峡库区水环境演变与污染防治重庆市重点实验室； ²西华大学能源与动力工程学院； ³香港浸会大学理学院化学系； ⁴材料腐蚀与防护四川省重点实验室

尹华伟(1988-)，博士，讲师，主要从事仿生功能材料与晶体材料方面的研究，电话：023-58102261，E - mail：huaweiyin@sanxiau.edu.cn

收稿日期: 2022-05-16

修回日期: 2022-06-21

录用日期: 2022-07-20

网络出版日期: 2023-12-25

基金资助

重庆市教育委员会科学技术计划项目(KJQN202201214, KJQN201901228, KJQN202001234)；重庆市自然科学基金项目(cstc2020jcyj - msxmX0826, cstc2021jcyj - msxmX1139)；材料腐蚀与防护四川省重点实验室开放基金(2021CL15)资助

收起

Study on Preparation and Mechanical Properties of Superhydrophobic Ni/TiO₂ Composite Coating on Surface of Stainless Steel

Expand

(1. Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, School of Environmental and Chemical Engineering, Chongqing Three Gorges University, Chongqing 404000, China;2. School of Energy and Power Engineering, Xihua University, Chengdu 610039, China;3. Department of Chemistry, Hong Kong Baptist University, Hong Kong 999077, China;4. Material Corrosion and Protection Key Laboratory of Sichuan Province, Zigong 643000, China)

Received date: 2022-05-16

Revised date: 2022-06-21

Accepted date: 2022-07-20

Online published: 2023-12-25

Fold

摘要

为了提高不锈钢的防污耐蚀等性能，采用一步电沉积技术及氟化改性技术在不锈钢表面成功制备出超疏水Ni/TiO2复合镀层，考察了电流密度对Ni镀层表面形貌的影响，并在9 A/dm2时获得花瓣状粗糙结构。在此恒定电流下采用Ni2+与TiO2共沉积的方法，在不锈钢表面制备Ni/TiO2复合镀层，经氟化改性后得到超疏水复合镀层。利用场发射扫描电子显微镜(FESEM)、能谱仪(EDS)和X射线衍射仪(XRD)对试样的表面形貌、化学成分及晶型结构进行分析。接触角测试结果表明，改性后的Ni/TiO2复合镀层获得了超疏水性能，其接触角可达159.2°，滚动角为6.3°。胶带剥离实验以及磨损实验结果显示，超疏水复合镀层具有良好的机械稳定性。与裸不锈钢相比，超疏水复合镀层的自腐蚀电流密度降低了2个数量级，缓蚀效率高达98.4%，表现出优异的耐腐蚀性能。同时，超疏水Ni/TiO2复合镀层还具有良好的自清洁性能，可为基体提供有效防护。

关键词： 电沉积; 氟化改性; Ni/TiO2复合镀层; 超疏水; 机械稳定性

本文引用格式

姚鑫, 胡传波, 尹华伟, 崔政, 吕丹 . 不锈钢表面超疏水Ni/TiO₂复合镀层的制备及力学性能研究[J]. 材料保护, 2022 , 55(11) : 69 -77 . DOI: 10.16577/j.issn.1001-1560.2022.0310

Abstract

In order to improve the antifouling and corrosion resistance of stainless steel, a superhydrophobic Ni/TiO2 composite coating was successfully prepared on the surface of stainless steel by one - step electrodeposition technology and fluorination modification technology. The effect of current density on the surface morphology of Ni coating was investigated, and a Ni coating with a rough petal - like structure was fabricated when the current density was 9 A/dm2. Subsequently, a co - deposition method was adopted to acquire Ni/TiO2 composite coating on the surface of stainless steel using such constant current density, and then the acquired coating was treated with fluorination modification to form a superhydrophobic composite coating. Moreover, the surface morphology, chemical composition and crystal structure of the prepared coating were studied through field emission scanning electron microscopy (FESEM), energy dispersive spectroscopy (EDS) and X - ray diffraction (XRD). The contact angle test results showed that the modified Ni/TiO2 composite coating possessed superhydrophobic property with a contact angle of 159.2° and a sliding angle of 6.3°. The results of tape peeling test and abrasion test showed that the superhydrophobic composite coating had superior mechanical stability. Compared with bare stainless steel, the self - corrosion current density of the superhydrophobic composite coating decreased by two orders of magnitude, and the corrosion inhibition efficiency reached 98.4 %, exhibiting excellent corrosion resistance. Meantime, the superhydrophobic Ni/TiO2 composite coating also possessed good self - cleaning performance and could provide an effective protection for the substrate.

Key words： electrodeposition; fluorination modification; Ni/TiO2 composite coating; superhydrophobic; mechanical stability

Options

文章导航

模态框（Modal）标题

摘要

本文引用格式

Abstract