Self-division behavier of TiB particles in TiB/Ti composite

Tatsuaki Yoshihiro; Toshihiro Tsuchiyama; Setsuo Takaki

doi:10.2320/matertrans.45.1640

Self-division behavier of TiB particles in TiB/Ti composite

Tatsuaki Yoshihiro, Toshihiro Tsuchiyama, Setsuo Takaki

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The change in dispersion of TiB boride formed through the chemical reaction, Ti+CrB&rarrCr+TiB, was investigated in the Ti-Cr system powder compact containing CrB boride particles. EPMA analysis revealed that the shape of the TiB particles was granular type at first, but they began to divide into a large number of fine plate-like TiB particles at the sintering temperature (self-division phenomenon). Although this seems to be contrary to the Ostwald ripening mechanism, the phenomenon could be reasonably explained in terms of total interfacial energy in the system: Considering the grain boundary energy within the granular TiB and the low interfacial energy of coherent plate-like TiB/matrix interface, the total interfacial energy was found to be decreased through the self-division. It was concluded that the difference in the total interfacial energy works as driving force for the self-division phenomenon.

Original language	English
Pages (from-to)	1640-1645
Number of pages	6
Journal	Materials Transactions
Volume	45
Issue number	5
DOIs	https://doi.org/10.2320/matertrans.45.1640
Publication status	Published - May 1 2004

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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abstract = "The change in dispersion of TiB boride formed through the chemical reaction, Ti+CrB&rarrCr+TiB, was investigated in the Ti-Cr system powder compact containing CrB boride particles. EPMA analysis revealed that the shape of the TiB particles was granular type at first, but they began to divide into a large number of fine plate-like TiB particles at the sintering temperature (self-division phenomenon). Although this seems to be contrary to the Ostwald ripening mechanism, the phenomenon could be reasonably explained in terms of total interfacial energy in the system: Considering the grain boundary energy within the granular TiB and the low interfacial energy of coherent plate-like TiB/matrix interface, the total interfacial energy was found to be decreased through the self-division. It was concluded that the difference in the total interfacial energy works as driving force for the self-division phenomenon.",

author = "Tatsuaki Yoshihiro and Toshihiro Tsuchiyama and Setsuo Takaki",

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T1 - Self-division behavier of TiB particles in TiB/Ti composite

AU - Yoshihiro, Tatsuaki

AU - Tsuchiyama, Toshihiro

AU - Takaki, Setsuo

PY - 2004/5/1

Y1 - 2004/5/1

N2 - The change in dispersion of TiB boride formed through the chemical reaction, Ti+CrB&rarrCr+TiB, was investigated in the Ti-Cr system powder compact containing CrB boride particles. EPMA analysis revealed that the shape of the TiB particles was granular type at first, but they began to divide into a large number of fine plate-like TiB particles at the sintering temperature (self-division phenomenon). Although this seems to be contrary to the Ostwald ripening mechanism, the phenomenon could be reasonably explained in terms of total interfacial energy in the system: Considering the grain boundary energy within the granular TiB and the low interfacial energy of coherent plate-like TiB/matrix interface, the total interfacial energy was found to be decreased through the self-division. It was concluded that the difference in the total interfacial energy works as driving force for the self-division phenomenon.

AB - The change in dispersion of TiB boride formed through the chemical reaction, Ti+CrB&rarrCr+TiB, was investigated in the Ti-Cr system powder compact containing CrB boride particles. EPMA analysis revealed that the shape of the TiB particles was granular type at first, but they began to divide into a large number of fine plate-like TiB particles at the sintering temperature (self-division phenomenon). Although this seems to be contrary to the Ostwald ripening mechanism, the phenomenon could be reasonably explained in terms of total interfacial energy in the system: Considering the grain boundary energy within the granular TiB and the low interfacial energy of coherent plate-like TiB/matrix interface, the total interfacial energy was found to be decreased through the self-division. It was concluded that the difference in the total interfacial energy works as driving force for the self-division phenomenon.

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Self-division behavier of TiB particles in TiB/Ti composite

Abstract

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