Effect of CeO2 Nanoparticles on Interface of Cu/Al2O3 Ceramic Clad Composites
Abstract
:1. Introduction
2. Materials and Methods
3. Results and Discussion
3.1. Structure and Hardness of Cu/Al2O3 Clad Composites
3.2. EDS of Interface
3.3. Mechanisms Discussion
4. Conclusions
- (1)
- The atom content of O is increased to approximately 30% with addition of CeO2 nanoparticles 24.3 nm in size compared with the atom content without CeO2 nanoparticles in the interfacial layer of the Cu/Al2O3 ceramic clad composites, so the addition of CeO2 could raise the atom content of O;
- (2)
- CeO2 nanoparticles coated on the surface of the Al2O3 ceramics can easily diffuse into the metallic Cu layer, but they do not in Al2O3 ceramics. CeO2 nanoparticles can accelerate to form the eutectic liquid of Cu2O–Cu, as they have strong functions of storing and releasing O at an Ar pressure of 0.12 MPa;
- (3)
- The addition of CeO2 nanoparticles is beneficial for promoting the bonded strength of Cu/Al2O3 ceramic clad composites. The bonded strength of the interface coated with nanoparticles of CeO2 is 20.8% higher than that without CeO2; however, the electric conductivity of metallic Cu is 95% IACS.
Author Contributions
Funding
Conflicts of Interest
References
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Fu, Y.; Chen, H.; Cao, Z.; Huo, Y. Effect of CeO2 Nanoparticles on Interface of Cu/Al2O3 Ceramic Clad Composites. Materials 2020, 13, 1240. https://doi.org/10.3390/ma13051240
Fu Y, Chen H, Cao Z, Huo Y. Effect of CeO2 Nanoparticles on Interface of Cu/Al2O3 Ceramic Clad Composites. Materials. 2020; 13(5):1240. https://doi.org/10.3390/ma13051240
Chicago/Turabian StyleFu, YaBo, HaoNan Chen, ZhiQiang Cao, and YanQiu Huo. 2020. "Effect of CeO2 Nanoparticles on Interface of Cu/Al2O3 Ceramic Clad Composites" Materials 13, no. 5: 1240. https://doi.org/10.3390/ma13051240