Corrosion properties of ceramic coating on pure titanium by pack boronizing with Nd2O3. Issue 10 (15th May 2023)

• Record Type: Journal Article
• Authors: Feng, Zhiqi; Duan, Yonghua; Cao, Yong; Qi, Huarong; Peng, Mingjun; Wang, Xiaoqi
• Is Part Of: Ceramics international. Volume 49:Issue 10(2023)
• Page Start: 15101
• Page End: 15113
• Publication Date: 2023-05-15
• Subjects: Boriding -- Nd2O3 -- Electrochemical test -- Pure titanium -- Corrosion resistance; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2023.01.093
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: In this work, the corrosion behaviors and mechanisms of the pure titanium by pack boronizing with different Nd2 O3 contents in 3.5 wt% NaCl and 5.0 vol% H2 SO4 solutions were characterized and analyzed by scanning electron microscope (SEM), X-ray diffraction (XRD), X-Ray photoelectron spectroscopy (XPS), electron probe microanalyzer (EPMA), and electrochemical tests. The results showed that the sample boronized with 4 wt% Nd2 O3 has the smoothest surface, the densest ceramic coating with a thickness of 52 μm, and the best corrosion resistance. Nd2 O3 can react with B to generate Nd–B active group, which promotes ceramic coating growth and turns local corrosion into uniform corrosion.