The oxidation-resistant Mo30Si60B10 coating for protection of the T2 phase-based molybdenum alloy
Year: 2024
Type: article
Abstract: This study focuses on fabrication of a Mo 30 Si 60 B 10 coating with elevated silicon content, which enhances working properties of Mo-alloy based on the Т 2 phase (t-Mo 5 SiB 2 ). The Mo 30 Si 60 B 10 coating has a columnar structure. The alloy is characterized by hardness of 17 GPa; Young's modulus of 304 GPa, and elastic recovery of 29 %. Deposition of the coating increased hardness by 40 %; the Young's modulus, by 18 %; and elastic recovery, by 25 %. Oxidation tests at 1200 °C demonstrated that the specific mass loss of the alloy with Mo 30 Si 60 B 10 coating was 1.5-fold lower than that of the uncoated alloy. An 18 μm thick oxide layer based on a-SiВO and containing MoO 2 particles was formed on the alloy surface. The coating contributes to a ∼14-fold reduction of oxide layer thick. The increase in oxidation resistance of alloy after coating deposition is related to sealing of substrate defects and formation of an a-SiВO layer with elevated silicon content.
Source: Open Ceramics
Language: English
Subfield: Mechanics of Materials
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,000
Awards: G2544671606, G4933583649
OpenAlex ID: W4402404597