Preparation and characterization of copper matrix composites by reaction sintering of the Cu–Mg–B system

Liu, D.B.; Chen, M.F.; Cui, Can; Tan, Jinhao

doi:10.1016/j.jallcom.2007.11.022

Cited by 6 publications

(6 citation statements)

References 13 publications

(16 reference statements)

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“…MgB 2 superconducting materials have a lot of attractive properties such as high critical current density, low cost, simple chemical composition and crystal structure, light density (2.55 g/cm 3 ), low anisotropy, and high upper critical field in terms of technological and industrial applications [13,14]. However, production of a single MgB 2 phase is difficult by virtue of complexity of the reaction and the formation of different phases such as MgB 4 , MgB 6 , MgB 7 , MgB 12 , and MgO [15][16][17][18][19][20]. A single MgB 2 phase formation depends on size and purity of constituents, heat-treatment parameters and operational steps.…”

Section: Introductionmentioning

confidence: 99%

Effect of different-sized h-BN nano-particles on some properties of MgB2 superconductors

Karaboğa

Yetiş

Öz

et al. 2016

J Mater Sci: Mater Electron

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The present study reports the effect of hexagonal boron nitride (h-BN) doping on the superconducting properties of bulk MgB 2 samples. Structural, electrical and magnetic properties of 3 wt% h-BN doped MgB 2 samples are studied in terms of three different sized h-BN nanoparticles. The results show that h-BN doping has no significant change on critical transition temperature (±0.5 K deviation), but decreases the magnetic J c with increasing the h-BN particle size. Among the doped samples, a highest J c (T = 10 K) value of 1.8 9 10 4 A/cm 2 is achieved for the sample doped with the smallest sized h-BN at zero external magnetic field but it is still lower than the 2.5 9 10 4 A/cm 2 obtained for the un-doped sample. In the scope of this study, it is investigated whether or not the nano-sized h-BN particle is a possible candidate to improve the pinning properties of the MgB 2 sample and we suggest that particle size is very important parameter in h-BN doping into MgB 2 .

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Section: Introductionmentioning

confidence: 99%

Effect of different-sized h-BN nano-particles on some properties of MgB2 superconductors

Karaboğa

Yetiş

Öz

et al. 2016

J Mater Sci: Mater Electron

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“…Among these researches, the effect of copper on the superconducting property of MgB 2 has been widely studied [3][4][5]. On the other hand, MgB 2 exhibits excellent properties such as low density (2.6 g/cm 3 ), low electrical resistivity (1 μΩ•cm @ 300 K), low linear thermal expansion coefficient (8.3×10-6 K -1 @ 300 K) and high mechanical properties [6][7][8]. It may serve as the candidate for reinforcement of copper matrix, responding to the potential applications with weight reduction demand, though the related research reports are quite few.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, Liu reported the preparation of Cu/MgB 2 composites by reaction sintering of Cu-Mg-B system [8]. However, magnesium tends to be oxidized besides the formation of Cu-Mg metallic compounds [8].…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Properties of Cu/MgB<sub>2</sub> Composites by Vacuum Sintering

Yang

Zou

Zhao

et al. 2013

MSF

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Cu/MgB2 composites with different content of MgB2 (10, 20, 30 vol.%) were fabricated by vacuum sintering of copper and MgB2 powders. The effects of MgB2 content and sintering process on the properties of Cu/MgB2 composites including the microstructures, relative density, electrical conductivity and hardness were then investigated. The results showed that the distribution uniformity of MgB2 on copper matrix decreased obviously with the increase of MgB2 content, the hardness of Cu/MgB2 composites increased and the relative density decreased slightly though the electrical conductivity decreased greatly. The relative density and hardness of Cu/MgB2 composites increased after the repressing-resintering process, the electrical conductivity was also improved slightly.

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“…Al 2 O 3 [1][2][3][4], ZrO 2 [5], MoSi 2 [6], SiC [7][8][9] particles reinforced Cu metal matrix composites synthesized by different methods have been investigated for their excellent properties. In addition, diamond and boride ceramics possess many desirable properties, such as high hardness, high melting temperature, high modulus and high corrosion resistance [10][11][12][13], and these make them to be potential reinforcement candidates in copper matrix composites.…”

Section: Introductionmentioning

confidence: 99%

“…The hardness of boron is very high, and it is also suitable for reinforcing the Cu matrix. However, pure B are always used during the preparation of Cu-B based composites [12,13], and it makes the preparation cost highly.…”

Section: Introductionmentioning

confidence: 99%