Accelerated degradation rate of high-strength Mg-4Y-1Zn alloy by Cu addition for degradable bridge-plug applications
-
Baosheng Liu
,
Gehang Dong
Abstract
To find good candidate materials for degradable bridgeplugs used in shale oil or gas exploitation, a novel hot extruded Mg-4Y-1Zn-1Cu alloy with long period stacking order (LPSO) phase and excellent mechanical properties and rapid degradation rate was fabricated. Compared with the Mg-4Y-1Zn alloy, the compressive properties of Mg-4Y- 1Zn-1Cu alloy are dramatically enhanced by adding Cu, with a compressive strength of 480 MPa, which can be attributed to the formation of fine-grains and the strengthening LPSO phase distributed within the substrate. Furthermore, Mg-4Y-1Zn-1Cu alloy shows a rapid degradation rate as demonstrated by immersion tests and polarization curves, with about 30 times higher corrosion rate than Mg- 4Y-1Zn alloy, which can be attributed to the 14H-type LPSO phase containing Cu with high corrosion potential and high fraction grain boundaries.
© 2020 by Walter de Gruyter Berlin/Boston
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- Notifications
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Articles in the same Issue
- CONTENTS
- Original Contributions
- Preparation of silicon boride SiBx (x = 3, 4, 5, 6) powders by chemical oven self-propagating combustion synthesis
- Structural, electrical and magnetic properties of glucose-capped CdS nanoparticles
- Microstructure and texture of Ti-6Al-4V alloy deformed by rotary forging at elevated temperatures
- The influence of multi-pass friction stir processing on microstructure and sliding wear behavior of Cu/ZrO2 surface composite
- Mechanical bonding in cold roll-cladding of tri-layered brass/steel/brass composite
- Borocarbide coarsening and the effect of borocarbide particle size on Charpy V-notch impact properties of medium-carbon boron-containing steel
- Study on photocatalytic activity based on different pH values of AgBr/Ag2CO3 heterojunction
- Study of the crystallization kinetics of a Zr57Cu15.4Ni12.6Al10Nb5 amorphous alloy
- Highly efficient biocide silver-doped soda lime glass for application in water quality optical sensors
- The synergistic effect of 2-mercaptobenzotiazole and zinc nitrate as corrosion inhibitor on carbon steel in saline solution
- Short Communications
- Accelerated degradation rate of high-strength Mg-4Y-1Zn alloy by Cu addition for degradable bridge-plug applications
- Notifications
- DGM
- Conferences
- Imprint
