Nano and micron WC particles reinforced Hastelloy C22 coatings manufactured by directed energy deposition

JOURNAL OF ALLOYS AND COMPOUNDS(2024)

Cited 0|Views11
No score
Abstract
The performance of Hastelloy C22 matrix composite with different reinforced particles is strongly related to microstructural aspect of the coating. In this study, a novel approach for fabricating advanced and high wear resistant nickel-based high-temperature composites by directed energy deposition (DED) was investigated, which enhances the Hastelloy C22 matrix by blending nano and micron WC particles. The microstructure and phase composition of the WC/C22 composite coatings were analyzed by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The main phases of WC/C22 composite coating are gamma-Ni, M6C, WC, W2C and M12C, where M12C and M6C are distributed at grain boundaries to inhibit grain growth and play the role of fine grain strengthening. In performance testing, the nano/micron WC/C22 composite coating showed a 71.04% increase in microhardness, a 92.3% reduction in mass loss, and significantly improved electrochemical corrosion performance compared to the C22 coating.
More
Translated text
Key words
Directed energy deposition,Metal Matrix Ceramic Composites,Hastelloy
AI Read Science
Must-Reading Tree
Example
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined