Characterization of ZrB2–TiC composites reinforced with short carbon fibers

Istgaldi, Hamid; Nayebi, Behzad; Ahmadi, Zohre; Shahi, Peyman; Asl, Mehdi Shahedi

doi:10.1016/j.ceramint.2020.06.095

Cited by 45 publications

(3 citation statements)

References 71 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The smaller size of WC has played a dispersion strengthening role on the matrix, making the matrix structure uniform and refined, as shown in Figure 6b. The average grain size of the composites decreased by 28%, and the smaller grain size resulted in higher hardness [77]. Secondly, the addition of WC will form (Ti, W) C solid solution with a higher hardness than pure TiC phase, so the hardness of composites will be improved, which has been found in other works [78].…”

Section: Effect Of Particle Phase On Tic Matrix Compositessupporting

confidence: 52%

Microstructure and Mechanical Properties of Carbide Reinforced TiC-Based Ultra-High Temperature Ceramics: A Review

et al. 2021

View full text Add to dashboard Cite

TiC ceramics have become one of the most potential ultra-high temperature structural materials, because of its high melting point, low density, and low price. However, the poor mechanical properties seriously limit its development and application. In this work, this review follows PRISMA standards, the mechanism of the second phase (particles, whiskers, and carbon nanotubes) reinforced TiC ceramics was reviewed. In addition, the effects of the second phase on the microstructure, phase composition and mechanical properties of TiC ceramics were systematically studied. The addition of carbon black effectively eliminates the residual TiO2 in the matrix, and the bending strength of the matrix is effectively improved by the strengthening bond formed between TiC; SiC particles effectively inhibit the grain growth through pinning, the obvious crack deflection phenomenon is found in the micrograph; The smaller grain size of WC plays a dispersion strengthening role in the matrix and makes the matrix uniformly refined, and the addition of WC forms (Ti, W) C solid solution, WC has a solid solution strengthening effect on the matrix; SiC whiskers effectively improve the fracture toughness of the matrix through bridging and pulling out, the microscopic diagram and mechanism diagram of SiC whisker action process are shown in this paper. The effect of new material carbon nanotubes on the matrix is also discussed; the bridging effect of CNTs can effectively improve the strength of the matrix, during sintering, some CNTs were partially expanded into GNR, in the process of crack bridging and propagation, more fracture energy is consumed by flake GNR. Finally, the existing problems of TiC-based composites are pointed out, and the future development direction is prospected.

show abstract

Section: Effect Of Particle Phase On Tic Matrix Compositessupporting

confidence: 52%

Microstructure and Mechanical Properties of Carbide Reinforced TiC-Based Ultra-High Temperature Ceramics: A Review

et al. 2021

View full text Add to dashboard Cite

show abstract

“…To overcome the mentioned difficulties, the implementation of advanced sintering techniques and also the incorporation of sintering additives can be the solution. The pressureless sintering (PS) [15][16][17][18], hot-pressing (HP) [19][20][21][22][23], and sintering by spark plasma (SPS) [24][25][26][27][28][29] are amongst the most used processes for sintering of ceramic materials. The first route, i.e., pressureless sintering, is considered as a commercial technique, while the utilization of two others can lead to fabricating high-quality compounds thanks to their intrinsic characteristics, namely simultaneous external pressure and comparably low sintering temperature [1,[30][31][32][33] [4,12,30,31,[34][35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

In-situ synthesis of TiN and TiB2 compounds during reactive spark plasma sintering of BN–Ti composites

et al. 2021

View full text Add to dashboard Cite

A BN-TiB2-TiN composite was produced via reactive sintering of the hexagonal BN (hBN) with 20 wt% Ti. Spark plasma sintering (SPS) was used as the fabrication method and the sample was characterized by X-ray diffractometry, energy-dispersive X-ray spectroscopy, and scanning electron microscopy. According to the results, the Ti was utterly consumed during the SPS, led to the in-situ TiB2 and TiN0.9 formations. Additionally, the microstructural study revealed the nucleation and growth of new hBN platelets from the initial fine hBN particles. Anyway, the final composite reached a relative density of 95%, because of the remaining free spaces between the hBN platelets. It was found that some nitrogen and boron atoms could leave the TiN and TiB2 microstructures, respectively, and diffuse into the opposing phase.

show abstract

“…Short carbon fibers could be used as reinforcement in ceramic composites because of great mechanical properties, high strength, excellent thermal stability, low density, and low cost 18,19 . Moreover, previous studies have demonstrated that addition of carbon fiber in structural ceramics such as SiC, 20,21 ZrB 2 , 22,12 HfB 2 , 23 and TiC 24 significantly promote their thermal shock resistance and strength.…”

Section: Introductionmentioning

confidence: 99%

Effect of short carbon fiber content on the mechanical properties of TiB₂‐based composites prepared by spark plasma sintering

Ghafuri

Emadi

Ahmadian

et al. 2021

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

In this study, TiB2‐30 vol% SiC composites containing 0, 5, 10, and 15 vol% short carbon fibers (Cf) were produced by spark plasma sintering (SPS). The effect of carbon fiber content on microstructure, density, and mechanical properties (micro‐hardness and flexural strength) of the fabricated composites was studied. Scanning electron microscopy (SEM) results indicated that the fibers were uniformly dispersed in the TiB2–SiC matrix using wet ball milling before SPS process. Fully dense TiB2–SiC–Cf composites were achieved by SPS process at 1900°C for 10 min under 30 MPa. With the addition of fibers, the relative density of the composites did not change considerably. Mechanical tests revealed that microhardness was reduced about 19% by the incorporation of carbon fibers, whereas the flexural strength improved significantly. However, the flexural strength diminished by adding carbon fibers above to critical value (5 vol%) due to residual thermal stresses, nonhomogeneous structure and graphitization of carbon fibers. It was found that the composite with 5 vol% Cf had the highest flexural strength (482 MPa), which was enhanced by 20% compared with the TiB2–SiC composite.

show abstract

Characterization of ZrB2–TiC composites reinforced with short carbon fibers

Cited by 45 publications

References 71 publications

Microstructure and Mechanical Properties of Carbide Reinforced TiC-Based Ultra-High Temperature Ceramics: A Review

Microstructure and Mechanical Properties of Carbide Reinforced TiC-Based Ultra-High Temperature Ceramics: A Review

In-situ synthesis of TiN and TiB2 compounds during reactive spark plasma sintering of BN–Ti composites

Effect of short carbon fiber content on the mechanical properties of TiB₂‐based composites prepared by spark plasma sintering

Contact Info

Product

Resources

About

Characterization of ZrB2–TiC composites reinforced with short carbon fibers

Cited by 45 publications

References 71 publications

Microstructure and Mechanical Properties of Carbide Reinforced TiC-Based Ultra-High Temperature Ceramics: A Review

Microstructure and Mechanical Properties of Carbide Reinforced TiC-Based Ultra-High Temperature Ceramics: A Review

In-situ synthesis of TiN and TiB2 compounds during reactive spark plasma sintering of BN–Ti composites

Effect of short carbon fiber content on the mechanical properties of TiB2‐based composites prepared by spark plasma sintering

Contact Info

Product

Resources

About

Effect of short carbon fiber content on the mechanical properties of TiB₂‐based composites prepared by spark plasma sintering