Reaction behavior and formation mechanism of ZrC and ZrB2 in the Cu–Zr–B4C system

Huo, Yanqiu; Hu, Qiaodan; Zhang, Ping; Zou, Binglin

doi:10.1016/j.ijrmhm.2013.10.011

Cited by 12 publications

(14 citation statements)

References 19 publications

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“…5a), the exothermal reaction is caused by the development of ZrC and ZrB 2 . The formation mechanism of ZrC and ZrB 2 could be ascribed to the solid-state reaction between Zr and B 4 C powders [9]. DSC preheated the reactants Fig.…”

Section: Effect Of B 4 C Particle Size On the Reaction Process Of Thementioning

confidence: 98%

“…Therefore, the synthesis of Cu 8 Zr 3 , Cu 10 Zr 7 and Cu 51 Zr 14 compounds through Cu-Zr reactions is thermodynamically feasible. Furthermore, DSC analysis in the Cu-Zr system revealed that these Cu-Zr compounds can be formed through the solid-solid reactions between Cu and Zr powders at 897 • C [9]. The heat liberated from the Cu-Zr reactions may enhance the activity and diffusion coefficient of the surrounding particles.…”

Section: Effect Of B 4 C Particle Size On the Reaction Process Of Thementioning

confidence: 99%

“…These works include hybrid ZrC and ZrB 2 particulates fabricated with Al, Zr and B 4 C powders [7], and ZrC-ZrB 2 composites produced by combining mechanical alloying and SHS with Zr, B and C mixtures [8]. In a previous article [9], the dependence of the reaction on Cu addition in a Cu-Zr-B 4 C system was analyzed. The authors found that altering the Cu content can change the phase evolution route by forming various Cu-Zr intermediates.…”

Section: Introductionmentioning

confidence: 99%

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The effect of B₄C particle size on the reaction process and product in the Cu–Zr–B₄C system

Huo

Huang

Fang

et al. 2015

Journal of Asian Ceramic Societies

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ZrC and ZrB 2 were prepared by self-propagating high-temperature synthesis in a Cu-Zr-B 4 C system. We explored the influence of B 4 C particle size on the reaction process, phase composition and microstructure of the products. The results show that the production of ZrC and ZrB 2 is mainly controlled by the dissolution of B 4 C in Cu-Zr liquid. Increasing the size of B 4 C will not affect the reaction path, but will retard the formation of the Cu-Zr-B-C liquid. This leads to the incomplete conversion of ZrC and ZrB 2 once the B 4 C exceeds 28 m. In addition, ZrC and ZrB 2 particle sizes greatly decrease from the micrometer dimension with a polyhedral morphology to the nanometer scale with a nearly spherical shape.

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Section: Effect Of B 4 C Particle Size On the Reaction Process Of Thementioning

confidence: 98%

Section: Effect Of B 4 C Particle Size On the Reaction Process Of Thementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The effect of B₄C particle size on the reaction process and product in the Cu–Zr–B₄C system

Huo

Huang

Fang

et al. 2015

Journal of Asian Ceramic Societies

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“…However, no Co-Zr compounds were formed at 1000 • C as compared with DSC results of the Cu-Zr system. Research on the reaction process of the Cu-Zr-B 4 C system indicated that the presence of B 4 C particles may restrain solid-state reaction between Cu and Zr powders [15]. It is inferred that the B 4 C in the Co-Zr-B 4 C system played the same role.…”

Section: Dsc Experimentsmentioning

confidence: 99%

“…By contrast, reports related to ZrC-ZrB 2 -based composites produced by the CS route are relatively limited. These works include ZrC and ZrB 2 particles fabricated from the Al-Zr-B 4 C and Cu-Zr-B 4 C system, and ZrC-ZrB 2 -SiC composites prepared with Zr, B 4 C, Si and graphite mixtures [2,14,15]. However, the combustion synthesis of ZrC-ZrB 2 -based composites from the Co-Zr-B 4 C system has not been reported so far.…”

Section: Introductionmentioning

confidence: 99%

In situ synthesis and formation mechanism of ZrC and ZrB₂ by combustion synthesis from the Co-Zr-B₄C system

Huo

Huang

Fang

et al. 2015

Journal of Asian Ceramic Societies

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Please cite this article in press as: M. Zhang, et al., In situ synthesis and formation mechanism of ZrC and ZrB 2 by combustion synthesis from the Co-Zr-B 4 C system, J. Asian Ceram. Soc. (2015), http://dx. a b s t r a c tZrC-ZrB 2 -based composites were prepared by combustion synthesis (CS) reaction from 10 wt.% to 50 wt.% Co-Zr-B 4 C powder mixtures. With increasing Co contents, the particle sizes of near-spherical ZrC and platelet-like ZrB 2 decreased from 1 m to 0.5 m and from 5 m to 2 m, respectively. In addition, the formation mechanism of ZrC and ZrB 2 was explored by the phase transition and microstructure evolution on the combustion wave quenched sample in combination with differential scanning calorimeter analysis. The results showed that the production of ZrC was ascribed to the solid-solid reaction between Zr and C and the precipitation from the Co-Zr-B-C melt, while ZrB 2 was prepared from the saturated liquid. The low B concentration in the Co-Zr-B-C liquid and high cooling rate during the CS process led to the presence of Co 2 B and ZrCo 3 B 2 in the composites. The addition of Co in the Co-Zr-B 4 C system not only prevented ZrC and ZrB 2 particulates from growing, but also promoted the occurrence of ZrC-ZrB 2 -forming reaction.

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Fabrication and properties of ZrC–ZrB2/Ni cermet coatings on a magnesium alloy by atmospheric plasma spraying of SHS powders

Zou

Zhao

et al. 2014

Ceramics International

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Reaction behavior and formation mechanism of ZrC and ZrB2 in the Cu–Zr–B4C system

Cited by 12 publications

References 19 publications

The effect of B₄C particle size on the reaction process and product in the Cu–Zr–B₄C system

The effect of B₄C particle size on the reaction process and product in the Cu–Zr–B₄C system

In situ synthesis and formation mechanism of ZrC and ZrB₂ by combustion synthesis from the Co-Zr-B₄C system

Fabrication and properties of ZrC–ZrB2/Ni cermet coatings on a magnesium alloy by atmospheric plasma spraying of SHS powders

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Reaction behavior and formation mechanism of ZrC and ZrB2 in the Cu–Zr–B4C system

Cited by 12 publications

References 19 publications

The effect of B4C particle size on the reaction process and product in the Cu–Zr–B4C system

The effect of B4C particle size on the reaction process and product in the Cu–Zr–B4C system

In situ synthesis and formation mechanism of ZrC and ZrB2 by combustion synthesis from the Co-Zr-B4C system

Fabrication and properties of ZrC–ZrB2/Ni cermet coatings on a magnesium alloy by atmospheric plasma spraying of SHS powders

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Product

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The effect of B₄C particle size on the reaction process and product in the Cu–Zr–B₄C system

The effect of B₄C particle size on the reaction process and product in the Cu–Zr–B₄C system

In situ synthesis and formation mechanism of ZrC and ZrB₂ by combustion synthesis from the Co-Zr-B₄C system