Strengthening behaviors of low-precious Ag-Pd-Au-Zn alloys for dental applications

Mitsuo Niinomi; Masaaki Nakai; Junko Hieda; Ken-Cho; Yonghwan Kim; Hisao Fukui

Strengthening behaviors of low-precious Ag-Pd-Au-Zn alloys for dental applications

Mitsuo Niinomi, Masaaki Nakai, Junko Hieda, Ken-Cho, Yonghwan Kim, Hisao Fukui

Materials Development Division

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

Abstract

Ag-Pd-Au-Zn alloys are frequently strengthened by an aging treatment after an initial solution treatment. However, Ag-Pd-Au-Zn alloys can be significantly strengthened by solution treatment alone. This phenomenon is unique, as the strength of metallic materials is generally decreased by solution treatment because of the precipitates dissolving into the surrounding matrix. Among the Ag-Pd-Au-Zn alloys, Ag-20Pd-12Au-14.5Cu alloy (in mass %) is the standard compositional alloy used for practical applications. The main source of the solution-treated Ag-20Pd-12Au-14.5Cu alloy strengthening was expected to be a β′ phase formation during the cooling process from the solution treatment's high temperature; this is clarified by changing the solution heat treatment and aging treatment conditions of using as-received wrought Ag-20Pd-12Au-14.5Cu alloy and liquid rapid solidified Ag-20Pd-12Au-14.5Cu alloy.

Original language	English
Title of host publication	Biomaterials Science
Subtitle of host publication	Processing, Properties and Applications V
Editors	Susmita Bose, Amit Bandyopadhyay, Roger Narayan
Publisher	American Ceramic Society
Pages	63-71
Number of pages	9
ISBN (Electronic)	9781119190028
Publication status	Published - 2015 Jan 1
Event	Next Generation Biomaterials and Surface Properties of Biomaterials Symposia - Materials Science and Technology 2014 Conference, MS and T 2014 - Pittsburgh, United States Duration: 2014 Oct 12 → 2014 Oct 16

Publication series

Name	Ceramic Transactions
Volume	254
ISSN (Print)	1042-1122

Other

Other	Next Generation Biomaterials and Surface Properties of Biomaterials Symposia - Materials Science and Technology 2014 Conference, MS and T 2014
Country	United States
City	Pittsburgh
Period	14/10/12 → 14/10/16

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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Strengthening behaviors of low-precious Ag-Pd-Au-Zn alloys for dental applications. / Niinomi, Mitsuo; Nakai, Masaaki; Hieda, Junko; Ken-Cho; Kim, Yonghwan; Fukui, Hisao.

Biomaterials Science: Processing, Properties and Applications V. ed. / Susmita Bose; Amit Bandyopadhyay; Roger Narayan. American Ceramic Society, 2015. p. 63-71 (Ceramic Transactions; Vol. 254).

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

Niinomi, M, Nakai, M, Hieda, J, Ken-Cho, Kim, Y & Fukui, H 2015, Strengthening behaviors of low-precious Ag-Pd-Au-Zn alloys for dental applications. in S Bose, A Bandyopadhyay & R Narayan (eds), Biomaterials Science: Processing, Properties and Applications V. Ceramic Transactions, vol. 254, American Ceramic Society, pp. 63-71, Next Generation Biomaterials and Surface Properties of Biomaterials Symposia - Materials Science and Technology 2014 Conference, MS and T 2014, Pittsburgh, United States, 14/10/12.

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abstract = "Ag-Pd-Au-Zn alloys are frequently strengthened by an aging treatment after an initial solution treatment. However, Ag-Pd-Au-Zn alloys can be significantly strengthened by solution treatment alone. This phenomenon is unique, as the strength of metallic materials is generally decreased by solution treatment because of the precipitates dissolving into the surrounding matrix. Among the Ag-Pd-Au-Zn alloys, Ag-20Pd-12Au-14.5Cu alloy (in mass %) is the standard compositional alloy used for practical applications. The main source of the solution-treated Ag-20Pd-12Au-14.5Cu alloy strengthening was expected to be a β′ phase formation during the cooling process from the solution treatment's high temperature; this is clarified by changing the solution heat treatment and aging treatment conditions of using as-received wrought Ag-20Pd-12Au-14.5Cu alloy and liquid rapid solidified Ag-20Pd-12Au-14.5Cu alloy.",

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AU - Niinomi, Mitsuo

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AU - Kim, Yonghwan

AU - Fukui, Hisao

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N2 - Ag-Pd-Au-Zn alloys are frequently strengthened by an aging treatment after an initial solution treatment. However, Ag-Pd-Au-Zn alloys can be significantly strengthened by solution treatment alone. This phenomenon is unique, as the strength of metallic materials is generally decreased by solution treatment because of the precipitates dissolving into the surrounding matrix. Among the Ag-Pd-Au-Zn alloys, Ag-20Pd-12Au-14.5Cu alloy (in mass %) is the standard compositional alloy used for practical applications. The main source of the solution-treated Ag-20Pd-12Au-14.5Cu alloy strengthening was expected to be a β′ phase formation during the cooling process from the solution treatment's high temperature; this is clarified by changing the solution heat treatment and aging treatment conditions of using as-received wrought Ag-20Pd-12Au-14.5Cu alloy and liquid rapid solidified Ag-20Pd-12Au-14.5Cu alloy.

AB - Ag-Pd-Au-Zn alloys are frequently strengthened by an aging treatment after an initial solution treatment. However, Ag-Pd-Au-Zn alloys can be significantly strengthened by solution treatment alone. This phenomenon is unique, as the strength of metallic materials is generally decreased by solution treatment because of the precipitates dissolving into the surrounding matrix. Among the Ag-Pd-Au-Zn alloys, Ag-20Pd-12Au-14.5Cu alloy (in mass %) is the standard compositional alloy used for practical applications. The main source of the solution-treated Ag-20Pd-12Au-14.5Cu alloy strengthening was expected to be a β′ phase formation during the cooling process from the solution treatment's high temperature; this is clarified by changing the solution heat treatment and aging treatment conditions of using as-received wrought Ag-20Pd-12Au-14.5Cu alloy and liquid rapid solidified Ag-20Pd-12Au-14.5Cu alloy.

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