Compression Properties and Electrical Conductivity of In-Situ 20 vol.% Nano-Sized TiCx/Cu Composites with Different Particle Size and Morphology

Zhang, Dongdong; Bai, Fengshan; Sun, Lianming; Wang, Yong; Wang, Jinguo

doi:10.3390/ma10050499

Cited by 12 publications

(8 citation statements)

References 33 publications

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“…In addition, the (111) diffraction peaks of the composites with the Cu content of 70, 60 and 50 vol% ( Figure 5) shifted to lower angles compared with those of the composites with the Cu contents of 90 and 80 vol%. This indicated that some Ti atoms entered into the crystal lattice of Cu and then formed the Cu solid solution [35]. Accordingly, it can be confirmed that Ti was residual for the Cu content of 70, 60 and 50 vol% in TiC x /Cu composites.…”

Section: Resultsmentioning

confidence: 75%

Shape-Controlled TiCx Particles Fabricated by Combustion Synthesis in the Cu-Ti-C System

et al. 2017

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TiC x particle-reinforced Cu-matrix composites were prepared in the Cu-TiC system by thermal explosion and hot press. Extracted TiC x particles with various shapes of in situ TiC x particles in the Cu-TiC system were observed through the Field Emission Scanning Electron Microscope (FESEM). It was found that octahedral and close-to-spherical, spherical or cubic TiC x could be fabricated by changing the C/Ti molar ratio and Cu content. Then, the effect of the C/Ti molar ratio and constituent element concentrations on the shape of in situ TiC x particles was determined: the shape of TiC x particles is octahedral at a C/Ti ratio of 0.4-0.6 with the presence of 70 vol% Cu; or spherical and close-to-spherical at 0.8-1.0 with the presence of 70 vol% Cu; or cubic at C/Ti ratios ≥1.0 with the presence of Cu from 80 vol%-90 vol% and even at C/Ti ratios >1.0 with the presence of 70 vol% Cu. The shape-controlled synthesis of TiC x particles in the Cu-TiC system is realized.

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Section: Resultsmentioning

confidence: 75%

Shape-Controlled TiCx Particles Fabricated by Combustion Synthesis in the Cu-Ti-C System

et al. 2017

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“…Due to its conductivity and ductility, Cu is widely used in electronic packaging and heat sink materials [ 7 ]. However, due to its low hardness and strength, poor wear resistance, easy oxidation, and easy softening and deformation above 500 °C, Cu tends to be rapidly consumed, which limits its widespread application [ 8 , 9 , 10 ]. To avoid the above drawbacks, ceramic particles are usually added to the copper matrix [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of Cr and Zr Addition on Microstructures, Compressive Properties, and Abrasive Wear Behaviors of In Situ TiB2/Cu Cermets

et al. 2018

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In situ micro-TiB2/Cu cermets with a different TiB2 content (40, 50, and 60 vol %) were successfully fabricated by combustion synthesis (CS) and hot press consolidation in Cu-Ti-B systems. In addition, different contents of Cr and Zr were added to the Cu-Ti-B systems. The microstructure, mechanical properties, and abrasive wear properties of the TiB2/Cu cermets were investigated. As the ceramic content increased, the yield strength and compressive strength of the cermets were found to increase, while the strain decreased. An increase in load and abrasive particle size caused the wear volume loss of the TiB2/Cu cermets to increase. When the ceramic content was 60 vol %, the wear resistance of the TiB2/Cu cermets was 3.3 times higher than that of pure copper. The addition of the alloying elements Zr and Cr had a significant effect on the mechanical properties of the cermets. When the Cr content was 5 wt %, the yield strength, ultimate compressive strength, and microhardness of the cermets reached a maximum of 997 MPa, 1183 MPa, and 491 Hv, respectively. Correspondingly, when the Zr content was 5 wt %, those three values reached 1764 MPa, 1967 MPa, and 655 Hv, respectively, which are 871 MPa, 919 MPa, and 223 Hv higher than those of the unalloyed cermets. The wear mechanism of the in-situ TiB2/Cu cermets, and the mechanisms by which the strength and wear resistance were enhanced by the addition of Zr, were preliminarily revealed.

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“…However, some composite materials are fabricated using in situ technologies; thus, quantification of elastic properties of the individual phases may be more difficult. Examples of such materials are: aluminum–aluminum oxide [1], titanium–titanium boride [2], aluminum–titanium carbide [3], cooper–titanium carbide [4] and many others. Moreover, the properties of composite constituents may change during the material processing [5,6,7].…”

Section: Introductionmentioning

confidence: 99%

Inverse Identification of Elastic Properties of Constituents of Discontinuously Reinforced Composites

Ogierman

2018

Materials

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This paper is devoted to determination of elastic properties of composite constituents by using an inverse identification procedure. The aim of the developed identification procedure is to compute the elastic constants of individual material phases on the basis of known properties of composite materials. The inverse problem of identification has been solved by combining an evolutionary algorithm with a micromechanical model. The paper also focuses on selection of a suitable micromechanical model for optimization which should ensure a compromise between accuracy and complexity. Two different cases have been studied: composite reinforced with short cylindrical fibers and composite reinforced with cubic particles. Moreover, Monte Carlo simulations have been carried out to expose a difference in outcome of identification which may occur when uncertain input data is considered. Obtained results show that identification is successful only when properties of composite materials with at least two different volume fractions of the reinforcement are known.

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Compression Properties and Electrical Conductivity of In-Situ 20 vol.% Nano-Sized TiCx/Cu Composites with Different Particle Size and Morphology

Cited by 12 publications

References 33 publications

Shape-Controlled TiCx Particles Fabricated by Combustion Synthesis in the Cu-Ti-C System

Shape-Controlled TiCx Particles Fabricated by Combustion Synthesis in the Cu-Ti-C System

Effects of Cr and Zr Addition on Microstructures, Compressive Properties, and Abrasive Wear Behaviors of In Situ TiB2/Cu Cermets

Inverse Identification of Elastic Properties of Constituents of Discontinuously Reinforced Composites

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