Copper-zirconium tungstate composites exhibiting low and negative thermal expansion influenced by reinforcement phase transformations

Dorian K. Balch; David C. Dunand

doi:10.1007/s11661-004-1019-2

Copper-zirconium tungstate composites exhibiting low and negative thermal expansion influenced by reinforcement phase transformations

Dorian K. Balch, David C. Dunand

Materials Science and Engineering

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

60 Scopus citations

Abstract

A fully-dense Cu-75 vol pct ZrW₂O₈ metal matrix composite was fabricated by hot isostatic pressing of Cu-coated ZrW ₂O₈ particles. A small amount of the high-pressure λ-ZrW₂O₈ phase was created during the cooldown and depressurization following densification; near complete transformation to λ-ZrW₂O₈ was achieved by subsequent cold isostatic pressing. The thermal expansion behavior of the composite between 25 °C and 325 °C was altered by the cold isostatic pressing treatment, and also depended on the length of time that had passed between thermal cycles. The measured thermal expansion coefficients within specific temperature ranges varied from - 6 10-6 K-1 to far above the thermal expansion coefficient of the copper matrix. The complex temperature-dependent expansion/ contraction behavior could be justified by considering the evolution of phase transformations taking place in the ZrW₂O₈ phase, which were observed by in-situ synchrotron X-ray diffraction measurements.

Original language	English (US)
Pages (from-to)	1159-1165
Number of pages	7
Journal	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume	35
Issue number	13
DOIs	https://doi.org/10.1007/s11661-004-1019-2
State	Published - 2004

Funding

One of the authors (DKB) gratefully acknowledges the Department of Defense for support in the form of an NDSEG Fellowship. All diffraction experiments were performed at the DuPont-Northwestern-Dow Collaborative Access Team (DND-CAT) Synchrotron Research Center located at Sector 5 of the Advanced Photon Source, and the help of Dr. J. Quintana and the DND-CAT staff is greatly appreciated. DND-CAT is supported by E.I. DuPont de Nemours & Co., The Dow Chemical Company, the United States National Science Foundation through Grant No. DMR-9304725, and the State of Illinois through the Department of Commerce and the Board of Higher Education Grant No. IBHE HECA NWU 96. Use of the Advanced Photon Source was supported by the United States Department of Energy, Basic Energy Sciences, Office of Energy Research, under Contract No. W-31-102-Eng-38.

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys

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10.1007/s11661-004-1019-2

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title = "Copper-zirconium tungstate composites exhibiting low and negative thermal expansion influenced by reinforcement phase transformations",

abstract = "A fully-dense Cu-75 vol pct ZrW2O8 metal matrix composite was fabricated by hot isostatic pressing of Cu-coated ZrW 2O8 particles. A small amount of the high-pressure λ-ZrW2O8 phase was created during the cooldown and depressurization following densification; near complete transformation to λ-ZrW2O8 was achieved by subsequent cold isostatic pressing. The thermal expansion behavior of the composite between 25 °C and 325 °C was altered by the cold isostatic pressing treatment, and also depended on the length of time that had passed between thermal cycles. The measured thermal expansion coefficients within specific temperature ranges varied from - 6 10-6 K-1 to far above the thermal expansion coefficient of the copper matrix. The complex temperature-dependent expansion/ contraction behavior could be justified by considering the evolution of phase transformations taking place in the ZrW2O8 phase, which were observed by in-situ synchrotron X-ray diffraction measurements.",

author = "Balch, {Dorian K.} and Dunand, {David C.}",

note = "Funding Information: One of the authors (DKB) gratefully acknowledges the Department of Defense for support in the form of an NDSEG Fellowship. All diffraction experiments were performed at the DuPont-Northwestern-Dow Collaborative Access Team (DND-CAT) Synchrotron Research Center located at Sector 5 of the Advanced Photon Source, and the help of Dr. J. Quintana and the DND-CAT staff is greatly appreciated. DND-CAT is supported by E.I. DuPont de Nemours & Co., The Dow Chemical Company, the United States National Science Foundation through Grant No. DMR-9304725, and the State of Illinois through the Department of Commerce and the Board of Higher Education Grant No. IBHE HECA NWU 96. Use of the Advanced Photon Source was supported by the United States Department of Energy, Basic Energy Sciences, Office of Energy Research, under Contract No. W-31-102-Eng-38.",

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N2 - A fully-dense Cu-75 vol pct ZrW2O8 metal matrix composite was fabricated by hot isostatic pressing of Cu-coated ZrW 2O8 particles. A small amount of the high-pressure λ-ZrW2O8 phase was created during the cooldown and depressurization following densification; near complete transformation to λ-ZrW2O8 was achieved by subsequent cold isostatic pressing. The thermal expansion behavior of the composite between 25 °C and 325 °C was altered by the cold isostatic pressing treatment, and also depended on the length of time that had passed between thermal cycles. The measured thermal expansion coefficients within specific temperature ranges varied from - 6 10-6 K-1 to far above the thermal expansion coefficient of the copper matrix. The complex temperature-dependent expansion/ contraction behavior could be justified by considering the evolution of phase transformations taking place in the ZrW2O8 phase, which were observed by in-situ synchrotron X-ray diffraction measurements.

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Copper-zirconium tungstate composites exhibiting low and negative thermal expansion influenced by reinforcement phase transformations

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