The influence of dendrite size on corrosion properties of Ti43.2Zr29.8Cu6.7Nb4Be16.3 amorphous matrix composites in NaCl solution
Source abstract
Abstract
Abstract In this study, the influence of dendrite size on corrosion behavior of Ti43.2Zr29.8Cu6.7Nb4Be16.3 in 3.5 wt. % NaCl solution was examined. These amorphous matrix composite alloys were found to contain 50 ~ 57 vol. % dendrites with size ranging from 3.21 to 32.28 μm. The electrochemical measurements revealed the corrosion resistance decreased as dendrite size increased. The alloys with the smallest dendrite size and 3 mm diameter exhibited the optimum corrosion resistance with the lowest corrosion current density estimated to 3.6(±0.5) × 10−8 A/cm2. And the corrosion behavior of preferentially dissolves was observed at the position of amorphous matrix. A possible corrosion mechanism associated with the selective dissolution was proposed. X-Ray photoelectron spectroscopy (XPS) analysis revealed formation of different oxides on specimen surfaces, causing discrepancies in corrosion resistance of the alloys. The chemical immersion tests further confirmed the corrosion behaviors. Overall, these data look promising for future new application of BMGMCs.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Metallic Glasses and Amorphous Alloys · Nanoporous metals and alloys · Shape Memory Alloy Transformations
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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