表面技术2017，Vol.46Issue(4)：235-239,5.DOI:10.16490/j.cnki.issn.1001-3660.2017.04.038
Al2O3-TiO2复相陶瓷涂层在动态LBE中的耐腐蚀行为
Anticorrosion Behavior of Al2O3-TiO2 Composite Ceramic Coating in Flowing LBE
摘要
Abstract
The work aims to analyze anticorrosion behavior of Al2O3-TiO2 composite ceramic coating in flowing super LBE. Al2O3-TiO2 composite ceramic coating was prepared on the CLAM steel in oxyacetylene flame spraying-laser in-situ syn-thesis reaction compound technology with pure Ti, FeAl and CrFe powders. Anticorrosion behavior of the coating in flowing lead-bismuth eutectic (LBE) alloy was investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) by carrying out 1000 h dynamic corrosion test to the sample in liquid LBE alloy at 500℃ with flow velocity of 0.3 m/s. The overall morphology of Al2O3-TiO2 composite ceramic coating surface remained intact com- pared to that before corrosion, coating phase composition remained stable, sectional analysis of lead-bismuth alloy was free from penetration in the coating during corrosion. The CLAM steel substrate without a protective coating was subject to obvious oxidation corrosion on the surface, loose structure of Fe3O4 oxide layer was generated, the lead-bismuth alloy was dispersed in the oxide layer. The Al2O3-TiO2 composite ceramic coating prepared in oxyacetylene flame spraying-laser in-situ reaction me-thod exhibits stable structure and excellent applicability, and can protect the substrate CLAM steel effectively in flowing lead-bismuth eutectic (LBE) alloy.关键词
Al2O3-TiO2复相陶瓷涂层/CLAM钢/铅铋合金/腐蚀Key words
Al2O3-TiO2composite ceramic coating/CLAM steel/lead-bismuth eutectic (LBE)/corrosion分类
矿业与冶金引用本文复制引用
农毅,邱长军,杨育洁,刘赞..Al2O3-TiO2复相陶瓷涂层在动态LBE中的耐腐蚀行为[J].表面技术,2017,46(4):235-239,5.基金项目
国家自然科学基金资助项目(91326114) Supported by National Natural Science Foundation of China(91326114) （91326114）
