The morphology of ceramic phases in BxC–SiC–Si infiltrated composites

Hayun, Shmuel; Frage, N.; Dariel, M.P.

doi:10.1016/j.jssc.2006.01.031

Cited by 95 publications

(92 citation statements)

References 9 publications

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“…The nearness of the B12(B,C,Si)3 grains with a dim shading somewhat lighter than a shade of SiC particles are plainly watched. It is essential to call attention to that B12(B,C,Si)3 grains associate fired particles and give nonstop earthenware skeleton, like that for the composites manufactured with free carbon increments and its development is in a decent concurrence with the reported already our outcomes for response reinforced boron carbide composites 3 . (Fig.…”

Section: Microstructuresupporting

confidence: 52%

A Modern & Unique Approach for Fabrication of Reaction Bonded Silicon Carbide Composites Applied in USM

Rao¹,

Srikanth²

2016

IOSR

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Section: Microstructuresupporting

confidence: 52%

A Modern & Unique Approach for Fabrication of Reaction Bonded Silicon Carbide Composites Applied in USM

Rao¹,

Srikanth²

2016

IOSR

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“…Furthermore, some efforts were devoted to studying the phase compositions and microstructure formation mechanisms, and found that B 4 C-phase reacts with Si-phase. [17][18][19][20] So far, to the author's knowledge, no special attention has been paid to the infiltration temperature and its influence on the microstructure and mechanical properties of RBBC ceramics in the open literature.…”

mentioning

confidence: 99%

The Role of Infiltration Temperature in the Reaction Bonding of Boron Carbide by Silicon Infiltration

Zhang

Wang

et al. 2014

J. Am. Ceram. Soc.

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The present paper is concerned on the effect of infiltration temperature on the components, microstructure, and mechanical properties of reaction-bonded boron carbide (RBBC) ceramics. RBBC ceramics were fabricated by reactive infiltration of molten silicon (Si) into porous preforms containing boron carbide (B 4 C) and free carbon. It has been found that infiltration temperatures have significant influence on the infiltration reactions involved and therefore the evolution of different phases formed in the RBBC ceramics. An increase in grain size of boron carbide particles through the coalescence of neighboring grains was observed at certain infiltration temperatures. The morphology of silicon carbide (SiC) phases developed from discontinuous and cloud-like SiC to continuous and integrated SiC zones with the increase of infiltration temperatures. With increasing temperatures up to 1600°C, the hardness, flexural strength, and fracture toughness all increased. When the temperatures exceeded 1600°C, while the hardness and flexural strength decreased, the fracture toughness continued to increase.

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“…However, these results suggest that YAG-YAP phase transformation has also occurred in our samples. This can be explained by a congruent dissolution-precipitation mechanism [16,17]. During the heat treatment, YAG phase dissolves into the ferritic matrix and YAP precipitates.…”

Section: Discussionmentioning

confidence: 99%

Microstructural Evolution of Cr-Rich ODS Steels as a Function of Heat Treatment at 475 °C

Foxman

Sobol

Pinkas³

et al. 2012

Metallogr. Microstruct. Anal.

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In the current research, the effect of heat treatment on the morphology of the dispersoids and their phase composition were investigated in three Cr-rich ferritic oxide dispersion strengthened (ODS) steels: PM2000, MA956, and ODM751. The steels were aged at 475°C for times ranging from 100 to 1,000 h. The microstructure was characterized using transmission electron microscopy. Study of the as-recrystallized samples revealed nano-scale Y-Al-O complex-oxide particles dispersed in the ferritic matrix. These dispersoids, which differ in size (10-160 nm) and geometry (polygonal and spherical), were identified as Y 4 Al 2 O 9 , YAlO 3 , and Y 3 Al 5 O 12 . After heat treatment, a significant change in the morphology, size, and distribution of the dispersoids was observed. Changes in the phase composition of the oxide dispersoids were also observed: YAlO 3 (with perovskite structure) was identified as the most dominant phase, indicating that it is probably the most stable phase in the Cr-rich ferritic ODS steels.

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The morphology of ceramic phases in BxC–SiC–Si infiltrated composites

Cited by 95 publications

References 9 publications

A Modern & Unique Approach for Fabrication of Reaction Bonded Silicon Carbide Composites Applied in USM

A Modern & Unique Approach for Fabrication of Reaction Bonded Silicon Carbide Composites Applied in USM

The Role of Infiltration Temperature in the Reaction Bonding of Boron Carbide by Silicon Infiltration

Microstructural Evolution of Cr-Rich ODS Steels as a Function of Heat Treatment at 475 °C

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