An organic silicone composite coating for protection of Ti-6Al-4V alloy: Oxidation behavior at 600 ºC in dry air. (February 2023)

• Record Type: Journal Article
• Authors: Lu, Yiliang; Xin, Li; Li, Xiaonan; Zhao, Qingqing; Zhang, Kai; Du, Yao; Chen, Zheng; Wang, Cheng; Zhu, Shenglong; Wang, Fuhui
• Is Part Of: Corrosion science. Volume 211(2023)
• Publication Date: 2023-02
• Subjects: A. Ti-6Al-4V -- A. Organic silicone coating -- B. XRD -- B. TEM -- C. High temperature -- C. Oxidation; Corrosion and anti-corrosives -- Periodicals; 620.11223
• DOI: 10.1016/j.corsci.2022.110897
• Languages: English
• ISSNs: 0010-938X

Abstract

Abstract: A new organic silicone composite coating modified by Al, ZrO2, quartz and PbO-SiO2 -Al2 O3 glass powders was developed to protect Ti-6Al-4V alloy. During oxidation at 600 °C in dry air, the coating was oxidized and formed an inorganic composite coating composed of amorphous silica framework and fillers which greatly decreased oxidation rate of substrate. Al2 SiO5 formed in coating due to reaction of Al with glass. Glass powders with softening point of 385 °C may play important roles in improving coating protectiveness because they can flow to fill the cavities formed by oxidation of organic components in coating at 600 °C.