Rod-like eutectic structure of arc-melted TiB2–TiC N1− composite

Cheng, Eric Jianfeng; Katsui, Hirokazu; Tu, Rong; Goto, Takashi

doi:10.1016/j.jeurceramsoc.2013.12.036

Cited by 24 publications

(21 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…reported the different orientations of TiC precipitates in TiB 2 single crystals prepared by an arc‐Verneuil process, in which the crystal orientation relationship was TiB 2 [0001]//TiC [110] and TiB 2

(\bar{1} 2 \bar{1} 0)

//TiC (2–20) . We reported that the lamellar microstructure formed at relatively high C/N ratios in 35TiB 2 –55TiC–10TiN, whereas the rod‐like structure formed at low C/N ratios in 36TiB 2 –44TiC–20TiN . The TiB 2 content was approximately the same, whereas the C/N rations were 5.5 and 2.2 in the cases of the lamellar and rod‐like microstructures, respectively.…”

Section: Resultsmentioning

confidence: 86%

“…14 In contrast, in the TiB 2 -TiC x N 1Àx eutectic composite, the rodlike microstructure was observed at TiC x N 1Àx volume fractions greater than 60% in the TiB 2 matrix phase. (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20). 15 We reported that the lamellar microstructure formed at relatively high C/N ratios in 35TiB 2 -55TiC-10TiN, whereas the rod-like structure formed at low C/N ratios in 36TiB 2 -44TiC-20TiN.…”

Section: Methodsmentioning

confidence: 99%

“…The arcmelted 36TiB 2 -44TiC-20TiN (mol%) composite exhibited a rod-like eutectic structure, where TiC x N 1Àx rods were dispersed in a TiB 2 matrix. 12 In this paper, we report the orientation relationships between TiC x N 1Àx rods and a TiB 2 matrix, and the formation of a new long-range ordered structure at the interface region between TiB 2 and TiC x N 1Àx .…”

Section: Introductionmentioning

confidence: 96%

See 2 more Smart Citations

Long‐Range Ordered Structure of Ti–B–C–N in a TiB₂–TiC_xN_1−x Eutectic Composite

Cheng

Katsui

et al. 2014

J. Am. Ceram. Soc.

Self Cite

View full text Add to dashboard Cite

A TiB2–TiCxN1−x quasi‐binary eutectic composite, with a rod‐like faceted texture and a long‐range ordered structure of Ti–B–C–N, was prepared by the arc‐melting of TiB2, TiC, and TiN powders. Hexagonal single‐crystalline TiCxN1−x rods were grown in a single‐crystalline TiB2 matrix with a crystal orientation relationship of TiB2 (11bold2¯0)//TiCxN1−x (bold2¯02) and TiB2 [0001]//TiCxN1−x [111]. A long‐range ordered structure of Ti–B–C–N was formed by the intermixing of the coherent interplanar spacings of seven TiB2 (0001) and nine TiCxN1−x (111) planes.

show abstract

(\bar{1} 2 \bar{1} 0)

Section: Resultsmentioning

confidence: 86%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

See 1 more Smart Citation

Long‐Range Ordered Structure of Ti–B–C–N in a TiB₂–TiC_xN_1−x Eutectic Composite

Cheng

Katsui

et al. 2014

J. Am. Ceram. Soc.

Self Cite

View full text Add to dashboard Cite

show abstract

“…36 In Fig. 65 In the B 4 C-MoB 2 eutectic, the irregular, "Chinese script" microstructure may be attributed to anisotropic interfacial energy. 39 Most of the explored borides and carbides binary eutectics systems, summarized in Table I, have the predicted microstructures based on the interface energy criterion.…”

Section: Overview Of Eutectic Compositions and Microstructuresmentioning

confidence: 98%

“…4(a), the LaB 6 -ZrB 2 DSE with 17 vol% of minor phase (ZrB 2 ) has a rodtype microstructure. 27,65 For example, in the TiB 2 -TiC x N 1Àx eutectic system a rod-like microstructure was maintained, whereas the volume fraction of the dispersed phase was 63%. 4(b), the B 4 C-SiC DSE with 38.7 vol% of minor phase (SiC) has lamellar-type microstructure.…”

Section: Overview Of Eutectic Compositions and Microstructuresmentioning

confidence: 99%

Directionally Solidified Boride and Carbide Eutectic Ceramics

et al. 2016

Self Cite

View full text Add to dashboard Cite

Borides and carbides generally have outstanding hardness, excellent wear resistance, and high melting points due to their covalent bonding. Directionally solidified eutectic (DSE) composites of boride and carbide constituent phases have been investigated since the 1970s as an approach to produce dense composite microstructures with added control over the microstructure. A variety of DSE ceramic composites have been developed and evaluated as potential materials for structural and functional applications due to their unique thermo‐electro‐mechanical properties. Renewed interest over the past few decades has been motivated, in part, by the needs for ultrahigh‐temperature composites for aerospace applications along with low‐density composites for armor applications. Some directionally solidified boride and carbide DSEs exhibit advantages in material properties over monolithic materials. This study reviews historical and recent research on processing methods, microstructure, crystallography, and material properties (mechanical, electrical, thermal properties, and oxidation resistance) of directionally solidified boride and carbide eutectic ceramic composites. Opportunities along with current limitations and needs for future developments are also reviewed and discussed.

show abstract