journal article·2022-11

Microstructure and corrosion behavior of HVAF-sprayed Fe-based composite coatings doped TiB2 and CNTs

Xiaoqing Liu, Dechang Zeng, Yaosha Wu, Zhigang Zheng, Zhaoguo Qiu

Corrosion Science· Volume 208
Publisher page

Abstract

Fe-based composite coating doped well-dispersed titanium boride (TiB 2) and carbon nanotubes (CNTs) were successfully fabricated via high velocity air fuel (HVAF) spraying. The microstructure and corrosion behavior of Fe-based metallic, Fe-TiB 2 cermet and Fe/(TiB 2-CNTs) coatings were comparatively investigated. It is found that doping TiB 2 , especially further doping 2.5 vol% CNTs could remarkably render the coatings lower porosity, favorable microstructure, superior hydrophobicity and then enhanced corrosion resistance. Thanks to the densest microstructure and the formation of passive films, pitting instead of severe etch groove in TiB 2-Fe interface inside splats and inter-splats was the main corrosion mechanism of the Fe/(TiB 2-CNTs) coating.
Source: expertdata · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Advanced materials and composites · High-Temperature Coating Behaviors · Metal and Thin Film Mechanics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

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