Fabrication of Sintered Functionally Gradient Material by Powder Spray Forming Process

Akira Kawasaki; Hiroyuki Hirose; Hiyoshi Hashimoto; Ryuzo Watanabe

doi:10.2497/jjspm.37.922

Fabrication of Sintered Functionally Gradient Material by Powder Spray Forming Process

Akira Kawasaki, Hiroyuki Hirose, Hiyoshi Hashimoto, Ryuzo Watanabe

ENG - Materials Processing

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

6 Citations (Scopus)

Abstract

A powder spray stacking apparatus has been developed for fine stacking of mixed powders. Functionally gradient material has been successfully fabricated using this process, which has fine microstructural transition from stainless steel to zirconia ceramics. Mixing ratio of metal and ceramic powders in the suspension using ethanol as a solvent was varied gradually by the computer control. Deposited products, which were prepared by spraying and depositing the suspension on preheated substrates, were CIP'ed, encapsulated and HIP'ed. Detailed observation of the microstructure has revealed that this process could precisely control the various composition profile with the minimum control size of 0.01mm. It has been shown that the thermal shock resistance of spray formed FGM was significantly higher than that of monolithic zirconia ceramics.

Original language	English
Pages (from-to)	922-928
Number of pages	7
Journal	journal of the japan society of powder and powder metallurgy
Volume	37
Issue number	7
DOIs	https://doi.org/10.2497/jjspm.37.922
Publication status	Published - 1990

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

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title = "Fabrication of Sintered Functionally Gradient Material by Powder Spray Forming Process",

abstract = "A powder spray stacking apparatus has been developed for fine stacking of mixed powders. Functionally gradient material has been successfully fabricated using this process, which has fine microstructural transition from stainless steel to zirconia ceramics. Mixing ratio of metal and ceramic powders in the suspension using ethanol as a solvent was varied gradually by the computer control. Deposited products, which were prepared by spraying and depositing the suspension on preheated substrates, were CIP'ed, encapsulated and HIP'ed. Detailed observation of the microstructure has revealed that this process could precisely control the various composition profile with the minimum control size of 0.01mm. It has been shown that the thermal shock resistance of spray formed FGM was significantly higher than that of monolithic zirconia ceramics.",

author = "Akira Kawasaki and Hiroyuki Hirose and Hiyoshi Hashimoto and Ryuzo Watanabe",

year = "1990",

doi = "10.2497/jjspm.37.922",

language = "English",

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pages = "922--928",

journal = "Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy",

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publisher = "Funtai Funamtsu Yakin Kyokai/Japan Soc. of Powder Metallurgy",

number = "7",

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T1 - Fabrication of Sintered Functionally Gradient Material by Powder Spray Forming Process

AU - Kawasaki, Akira

AU - Hirose, Hiroyuki

AU - Hashimoto, Hiyoshi

AU - Watanabe, Ryuzo

PY - 1990

Y1 - 1990

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AB - A powder spray stacking apparatus has been developed for fine stacking of mixed powders. Functionally gradient material has been successfully fabricated using this process, which has fine microstructural transition from stainless steel to zirconia ceramics. Mixing ratio of metal and ceramic powders in the suspension using ethanol as a solvent was varied gradually by the computer control. Deposited products, which were prepared by spraying and depositing the suspension on preheated substrates, were CIP'ed, encapsulated and HIP'ed. Detailed observation of the microstructure has revealed that this process could precisely control the various composition profile with the minimum control size of 0.01mm. It has been shown that the thermal shock resistance of spray formed FGM was significantly higher than that of monolithic zirconia ceramics.

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