Effects of inhomogenization on sintering behavior of Ni/Al 2O3 powder mixtures

Kazunari Shinagawa

doi:10.4028/www.scientific.net/MSF.631-632.245

Effects of inhomogenization on sintering behavior of Ni/Al ₂O₃ powder mixtures

Kazunari Shinagawa

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Citations (Scopus)

Abstract

Aiming at the modification of the sinterability of metal/ceramic powder mixtures, the influence of the homogeneity in microstructure on the sintering behavior is examined. Ni/Al₂O₃ specimens, with ratios ranging from 0/100 to 100/0, are prepared by compaction through two different procedures of mixing and granulating, to change the degree of particle dispersion. The sintering stress and the viscosity of the specimens are measured by sinter-compression tests to consider the sinterability from the viewpoint of both driving force and resistance. The sintering rate of the inhomogeneous compacts, with agglomeration of powder particles, is larger than that of the homogeneous compacts. This is because the viscosity becomes low, but the sintering stress does not change much by inhomogenizing the microstructure.

Original language	English
Title of host publication	Multiscale, Multifunctional and Functionally Graded Materials
Pages	245-250
Number of pages	6
DOIs	https://doi.org/10.4028/www.scientific.net/MSF.631-632.245
Publication status	Published - Feb 9 2010
Externally published	Yes
Event	10th International Symposium on Multiscale, Multifunctional and Functionally Graded Materials, MM and FGMs - Sendai, Japan Duration: Sep 22 2008 → Sep 25 2008

Publication series

Name	Materials Science Forum
Volume	631-632
ISSN (Print)	0255-5476

Other

Other	10th International Symposium on Multiscale, Multifunctional and Functionally Graded Materials, MM and FGMs
Country/Territory	Japan
City	Sendai
Period	9/22/08 → 9/25/08

All Science Journal Classification (ASJC) codes

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

Access to Document

10.4028/www.scientific.net/MSF.631-632.245

Cite this

Shinagawa, K 2010, Effects of inhomogenization on sintering behavior of Ni/Al ₂O₃ powder mixtures. in Multiscale, Multifunctional and Functionally Graded Materials. Materials Science Forum, vol. 631-632, pp. 245-250, 10th International Symposium on Multiscale, Multifunctional and Functionally Graded Materials, MM and FGMs, Sendai, Japan, 9/22/08. https://doi.org/10.4028/www.scientific.net/MSF.631-632.245

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abstract = "Aiming at the modification of the sinterability of metal/ceramic powder mixtures, the influence of the homogeneity in microstructure on the sintering behavior is examined. Ni/Al2O3 specimens, with ratios ranging from 0/100 to 100/0, are prepared by compaction through two different procedures of mixing and granulating, to change the degree of particle dispersion. The sintering stress and the viscosity of the specimens are measured by sinter-compression tests to consider the sinterability from the viewpoint of both driving force and resistance. The sintering rate of the inhomogeneous compacts, with agglomeration of powder particles, is larger than that of the homogeneous compacts. This is because the viscosity becomes low, but the sintering stress does not change much by inhomogenizing the microstructure.",

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AB - Aiming at the modification of the sinterability of metal/ceramic powder mixtures, the influence of the homogeneity in microstructure on the sintering behavior is examined. Ni/Al2O3 specimens, with ratios ranging from 0/100 to 100/0, are prepared by compaction through two different procedures of mixing and granulating, to change the degree of particle dispersion. The sintering stress and the viscosity of the specimens are measured by sinter-compression tests to consider the sinterability from the viewpoint of both driving force and resistance. The sintering rate of the inhomogeneous compacts, with agglomeration of powder particles, is larger than that of the homogeneous compacts. This is because the viscosity becomes low, but the sintering stress does not change much by inhomogenizing the microstructure.

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