Investigation of surface modifications for combating the molten aluminum corrosion of AISI H13 steel

Research output: Contribution to journalArticlepeer-review

Authors

  • Guang Chen
  • Ling Xue
  • Jun Wang
  • Zhenghua Tang

Colleges, School and Institutes

External organisations

  • Sichuan University

Abstract

In this study, we performed three surface modifications for AISI H13 steel to study their protective effects in 1023 K molten aluminum. Results showed that air oxidation can produce a thin film of Fe2O3 and little FeO, and the liquid-nitriding formed a surface of iron nitrides and oxides (Fe2O3 + Fe3O4). While liquid-nitriding with post-oxidation can form a surface of Fe3O4 and little Fe2O3 by oxidizing the nitrides into Fe3O4 on the liquid-nitriding samples. The Fe3O4 has low wettability and good chemical stability against molten aluminum, thus the corrosion behaviors of molten aluminum to the samples change from dissolution to oxidation.

Bibliographic note

Funding Information: The authors gratefully acknowledge the foundation of Grants provided by the National Natural Science Foundation of China (Nos. 51471112 and 51611130204 ), Science and Technology Planning Project of Sichuan (No. 2016GZ0173 ), and Science and Technology Department of Sichuan Province (No. 2020YFG0095 ). Publisher Copyright: © 2020 Elsevier Ltd Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

Details

Original languageEnglish
Article number108836
JournalCorrosion Science
Volume174
Publication statusPublished - Sep 2020

Keywords

  • Air oxidation, AISI H13 steel, Liquid-nitriding, Molten aluminum corrosion, Post-oxidation, Surface modifications