工艺顺序调整低锡钢Mn-Al-P化学转化涂层的优化

IF 1.1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Pub Date : 2023-03-04 DOI:10.5006/4278

Y. Zhao, Wei Li, Zhen-wei Wang, Ning Li, Yanling Xu, Deyu Li

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引用次数: 0

摘要

近年来，在马口铁生产领域，采用较低的锡涂层质量来降低生产成本已成为一种趋势。然而，制备低锡包覆钢必须面临两个重大问题:有毒的铬酸盐后处理和低耐蚀性。本文研制了一种用于工艺顺序调整马口铁的Mn-Al-P化学转化涂层，锡涂层质量为0.5g·m-2，可替代铬酸盐处理。同时，通过调整回流工艺和后处理工艺的先后顺序，有效降低了洗涤用水量和耗电量。研究了回流时间对该新型马口铁的组织形貌、相组成、表面元素分布及耐蚀性的影响。并用XPS测定了其组成，并进一步探讨了该涂层的形成机理。结果表明，将工艺调整后的回流时间适当设置为3.5 s，该复合镀层可以有效填充马口铁表面无锡区，提高了马口铁的耐蚀性。但是，持续延长回流时间会导致磷酸盐涂层脱落，导致耐腐蚀性下降。镀层主要由一系列无定形磷酸盐化合物和金属氧化物组成，适用于镀层质量较低的马口铁。

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Optimization of Mn-Al-P Chemical Conversion Coating for Process Sequence Adjusted Low Sn-coated Steel

In recent years, in the field of tinplate production, it has become a trend to use lower tin coating mass to lower production cost. However, the preparation of low Sn-coated steel must face two significant problems: toxic chromate post-treatment and low corrosion resistance. In this work, we developed a Mn-Al-P chemical conversion coating using for process sequence adjusted tinplate of 0.5g·m^-2 tin coating mass to alternative the chromate treatment. Meanwhile, by adjusting the subsequence of the reflowing process and the post-treatment process, the wash water and electricity consumption was effectively reduced. The influence of reflowing time on the microstructural appearance, phase composition, surface element distribution, and corrosion resistance of this new brand tinplate was studied. Moreover, the composition was determined by XPS, and further discuss the formation mechanism of this coating. The results show that this muti-element coating could effectively fill tin-free zones on the surface of tinplate and improve the corrosion resistance when the reflowing time is properly setup to 3.5 s after the process adjustment. However, continually extended the reflowing time would cause the phosphate coating to fall off, which lead to the corrosion resistance deteriorate. The coating was mainly made up by a series of amorphous phosphate compounds and metal oxides, which was suitable for tinplate with low tin coating mass.

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来源期刊

Corrosion MATERIALS SCIENCE, MULTIDISCIPLINARY-METALLURGY & METALLURGICAL ENGINEERING

CiteScore

2.80

自引率

12.50%

发文量

审稿时长

3 months

期刊介绍： CORROSION is the premier research journal featuring peer-reviewed technical articles from the world’s top researchers and provides a permanent record of progress in the science and technology of corrosion prevention and control. The scope of the journal includes the latest developments in areas of corrosion metallurgy, mechanisms, predictors, cracking (sulfide stress, stress corrosion, hydrogen-induced), passivation, and CO2 corrosion. 70+ years and over 7,100 peer-reviewed articles with advances in corrosion science and engineering have been published in CORROSION. The journal publishes seven article types – original articles, invited critical reviews, technical notes, corrosion communications fast-tracked for rapid publication, special research topic issues, research letters of yearly annual conference student poster sessions, and scientific investigations of field corrosion processes. CORROSION, the Journal of Science and Engineering, serves as an important communication platform for academics, researchers, technical libraries, and universities. Articles considered for CORROSION should have significant permanent value and should accomplish at least one of the following objectives: • Contribute awareness of corrosion phenomena, • Advance understanding of fundamental process, and/or • Further the knowledge of techniques and practices used to reduce corrosion.