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文化遗产建筑低合金钢增强材料长期大气腐蚀机制的新见解

New Insights in the Long-Term Atmospheric Corrosion Mechanisms of Low Alloy Steel Reinforcements of Cultural Heritage Buildings.

作者信息

Bouchar Marie, Dillmann Philippe, Neff Delphine

机构信息

Saint-Gobain Recherche, 39 quai Lucien Lefranc, 93303 Aubervilliers CEDEX, France.

LAPA-IRAMAT, NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette, France.

出版信息

Materials (Basel). 2017 Jun 19;10(6):670. doi: 10.3390/ma10060670.

DOI:10.3390/ma10060670
PMID:28773030
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5554051/
Abstract

Reinforcing clamps made of low alloy steel from the Metz cathedral and corroded outdoors during 500 years were studied by OM, FESEM/EDS, and micro-Raman spectroscopy. The corrosion product layer is constituted of a dual structure. The outer layer is mainly constituted of goethite and lepidocrocite embedding exogenous elements such as Ca and P. The inner layer is mainly constituted of ferrihydrite. The behaviour of the inner layer under conditions simulating the wetting stage of the RH wet/dry atmospheric corrosion cycle was observed by in situ micro-Raman spectroscopy. The disappearance of ferrihydrite near the metal/oxide interface strongly suggests a mechanism of reductive dissolution caused by the oxidation of the metallic substrate and was observed for the first time in situ on an archaeological system.

摘要

对取自梅斯大教堂、在户外腐蚀了500年的低合金钢加固夹具进行了光学显微镜（OM）、场发射扫描电子显微镜/能谱仪（FESEM/EDS）和显微拉曼光谱分析。腐蚀产物层由双重结构组成。外层主要由针铁矿和纤铁矿构成，其中包埋有钙和磷等外来元素。内层主要由水铁矿构成。通过原位显微拉曼光谱观察了内层在模拟相对湿度干湿大气腐蚀循环湿润阶段条件下的行为。水铁矿在金属/氧化物界面附近的消失有力地表明了由金属基底氧化引起的还原溶解机制，这是首次在考古系统中原位观察到。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35a4/5554051/c3f2dfd90825/materials-10-00670-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35a4/5554051/eed2e1b9c053/materials-10-00670-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35a4/5554051/c5068ffd6c80/materials-10-00670-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35a4/5554051/0da1b25dce21/materials-10-00670-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35a4/5554051/12017bb1fd7f/materials-10-00670-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35a4/5554051/18dbf5b47a42/materials-10-00670-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35a4/5554051/e441f66c3487/materials-10-00670-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35a4/5554051/efa9c1a9f781/materials-10-00670-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35a4/5554051/f913a085d6ae/materials-10-00670-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35a4/5554051/57f1e6255003/materials-10-00670-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35a4/5554051/c3f2dfd90825/materials-10-00670-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35a4/5554051/eed2e1b9c053/materials-10-00670-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35a4/5554051/c5068ffd6c80/materials-10-00670-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35a4/5554051/0da1b25dce21/materials-10-00670-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35a4/5554051/12017bb1fd7f/materials-10-00670-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35a4/5554051/18dbf5b47a42/materials-10-00670-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35a4/5554051/e441f66c3487/materials-10-00670-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35a4/5554051/efa9c1a9f781/materials-10-00670-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35a4/5554051/f913a085d6ae/materials-10-00670-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35a4/5554051/57f1e6255003/materials-10-00670-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35a4/5554051/c3f2dfd90825/materials-10-00670-g010.jpg

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