Superhard Copper Matrix Composite Reinforced by Ultrafine Boron for Wear-Resistant Bearings
Source abstract
Abstract
The mechanical properties of traditional dispersion-strengthened composites are greatly limited because of the weak interfacial bonding between the metal matrix and ex situ reinforcement. Here we report a copper matrix composite with high hardness strengthened by high-density dispersed nanoscale in situ boron, having great potential in structural and functional materials, such as wear-resistant bearings. The hardness of the composite can reach 3.04 GPa by a nanoindentation test. The composite was fabricated by a powder metallurgical process, in which the boron was produced in a copper melt directly. Nanotwins and lattice distortion zones observed in the phase boundaries may contribute to the ultrahigh hardness.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Aluminum Alloys Composites Properties · Microstructure and mechanical properties · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory for Liquid−Solid Structural Evolution & Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China
Institute of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing 100124, China
Funding
National Natural Science Foundation of China · Natural Science Foundation of Shandong Province · Young Scholars Program of Shandong University
References (30)
Show source-provided references
1. 10.1002/adem.20070010610.1002/adem.200700106 ↗
2. 10.1016/j.compositesb.2013.10.06010.1016/j.compositesb.2013.10.060 ↗
3. 10.12693/APhysPolA.127.104510.12693/APhysPolA.127.1045 ↗
4. 10.1016/j.wear.2007.09.00110.1016/j.wear.2007.09.001 ↗
5. 10.1016/j.matchar.2005.04.00610.1016/j.matchar.2005.04.006 ↗
6. Yang Q. · Asian J. Chem. · 2014 · 26 · 533310.14233/ajchem.2014.18104 ↗
7. 10.1007/s11665-017-2660-410.1007/s11665-017-2660-4 ↗
8. 10.1038/srep0404910.1038/srep04049 ↗
9. 10.1007/s13369-017-2661-510.1007/s13369-017-2661-5 ↗
10. 10.1016/j.msea.2005.11.03610.1016/j.msea.2005.11.036 ↗
11. 10.1016/j.carbon.2011.06.06310.1016/j.carbon.2011.06.063 ↗
12. 10.4028/www.scientific.net/MSF.729.22810.4028/www.scientific.net/MSF.729.228 ↗
13. 10.1023/A:100467482275110.1023/A:1004674822751 ↗
14. 10.1016/j.msea.2015.07.05010.1016/j.msea.2015.07.050 ↗
15. 10.1021/nl049878510.1021/nl0498785 ↗
16. 10.1016/j.jallcom.2012.02.16810.1016/j.jallcom.2012.02.168 ↗
17. 10.1039/C7CE00902J10.1039/C7CE00902J ↗
18. 10.1016/j.actamat.2005.01.03110.1016/j.actamat.2005.01.031 ↗
19. 10.4028/www.scientific.net/AMR.29-30.14310.4028/www.scientific.net/AMR.29-30.143 ↗
20. 10.1557/jmr.2013.11910.1557/jmr.2013.119 ↗
21. 10.1016/j.actamat.2009.06.03010.1016/j.actamat.2009.06.030 ↗
22. 10.1126/science.109290510.1126/science.1092905 ↗
23. 10.1016/j.scriptamat.2005.05.02210.1016/j.scriptamat.2005.05.022 ↗
24. 10.1016/S1359-6454(96)00336-910.1016/S1359-6454(96)00336-9 ↗
25. 10.1016/0921-5093(95)09821-610.1016/0921-5093(95)09821-6 ↗
26. 10.1016/S1359-6454(01)00038-610.1016/S1359-6454(01)00038-6 ↗
27. 10.1179/cmq.1963.2.1.3110.1179/cmq.1963.2.1.31 ↗
28. 10.1016/j.matlet.2011.09.01310.1016/j.matlet.2011.09.013 ↗
29. 10.1002/adma.20170462910.1002/adma.201704629 ↗
30. 10.1016/S1359-6454(98)00164-510.1016/S1359-6454(98)00164-5 ↗