Authors
Hao Shen, Zeming Sheng, Xingcheng Zhang, Weiwei Liu, Zhanwen Xing, Yao Chen
Published in
ACS applied bio materials. Sep 07, 2026. Epub Sep 07, 2026.
Abstract
Hexagonal boron nitride nanoplatelets (BNNPs) are promising nanofillers for Mg matrix composites owing to their excellent mechanical properties and low density. In this research, we report the fabrication of ZK61 magnesium composites reinforced with a hybrid of BNNPs and β-tricalcium phosphate (TCP) using spark plasma sintering (SPS). The designed composites exhibit a dense microstructure characterized by refined α-Mg grains with β-TCP particles preferentially distributed along the α-Mg particle boundaries. In addition, trace amounts of interfacial products, such as Mg3N2 and MgB2, are detected to act as chemical anchoring phases, promoting stronger interfacial bonding. Notably, the composite containing 5.0 wt % β-TCP and 0.3 wt % BNNPs demonstrates a remarkable combination of strength and ductility, exhibiting a compressive yield strength of ∼132 MPa, an ultimate compressive strength of ∼380 MPa, and an elongation of ∼28.9%. This favorable balance of high strength and substantial plastic deformability highlights the synergistic reinforcing effect of β-TCP and BNNPs in the ZK61 matrix. In addition, immersion tests reveal that the degradation rate of the 0.3BNNP/5TCP/ZK61 composite is approximately one-fourth that of the monolithic ZK61 alloy immersed in SBF for 28 d. These findings suggest that BNNP/β-TCP reinforced ZK61 composites are promising candidates for biodegradable implant materials.
PMID:
42704830
Bibliographic data and abstract were imported from PubMed on 08 Sep 2026.
Read full publication at:
Please sign in
to see all details.
Advertisement
Stats
- Recommendations n/a n/a positive of 0 vote(s)
- Views 3
- Comments 0