A Seawater-Corrosion-Resistant and Isotropic Zero Thermal Expansion (Zr,Ta)(Fe,Co)2 Alloy

Wenjie Li; Kun Lin; Yu Yan; Chengyi Yu; Yili Cao; Xin Chen; Chin Wei Wang; Kenichi Kato; Yan Chen; Ke An; Qinghua Zhang; Lin Gu; Qiang Li; Jinxia Deng; Xianran Xing

doi:10.1002/adma.202109592

A Seawater-Corrosion-Resistant and Isotropic Zero Thermal Expansion (Zr,Ta)(Fe,Co)₂ Alloy

Wenjie Li, Kun Lin, Yu Yan, Chengyi Yu, Yili Cao, Xin Chen, Chin Wei Wang, Kenichi Kato, Yan Chen, Ke An, Qinghua Zhang, Lin Gu, Qiang Li, Jinxia Deng, Xianran Xing

Materials Engineering

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

18 Scopus citations

Abstract

Zero thermal expansion (ZTE) alloys as dimensionally stable materials are usually challenged by harsh environmental erosion, since ZTE and corrosion resistance are generally mutually exclusive. Here, a high-performance alloy, Zr_0.8Ta_0.2Fe_1.7Co_0.3, is reported, that shows isotropic ZTE behavior (α_l = 0.21(2) × 10⁻⁶ K⁻¹) in a wide temperature range of 5–360 K, high corrosion resistance in a seawater-like solution compared with classic Invar and stainless Invar, and excellent cyclic thermal and structural stabilities. Such stabilities are attributed to the cubic symmetry, the controllable magnetic order, and the spontaneously formed passive film with Ta and Zr chemical modifications. The results are evidenced by X-ray/neutron diffraction, microscopy, spectroscopy, and electrochemistry investigations. Such multiple stabilities have the potential to broaden the robust applications of ZTE alloys, especially in marine services.

Original language	English
Article number	2109592
Journal	Advanced Materials
Volume	34
Issue number	34
DOIs	https://doi.org/10.1002/adma.202109592
State	Published - Aug 25 2022

Funding

This research was supported by the National Key R&D Program of China (Grant No. 2020YFA0406202), the National Natural Science Foundation of China (Grant Nos. 22090042 and 21731001), and the Fundamental Research Funds for the Central Universities, China (Grant Nos. FRF‐IDRY‐19‐018, FRF‐BR‐19‐003B). The synchrotron radiation diffraction experiments were performed at the BL44B2 of SPring‐8 with the approval of the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal Nos. 2021A1145, 2019A1378). The neutron powder diffraction experiments were performed at the wombat of ANSTO, Australia (Proposal Nos. P9189, P7341) Neutron diffraction pole texture work was carried out at the Spallation Neutron Source (SNS) (Proposal No. 2020B‐26069), which is the U.S. Department of Energy (DOE) user facility at the Oak Ridge National Laboratory, sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences. The authors thank Dr. Dunji Yu at the SNS for the technical support.

Funders	Funder number
Scientific User Facilities Division
U.S. Department of Energy
Basic Energy Sciences
National Natural Science Foundation of China	22090042, 21731001
National Key Research and Development Program of China	2020YFA0406202
Fundamental Research Funds for the Central Universities	FRF‐IDRY‐19‐018, P7341, 2020B‐26069, P9189

Keywords

Laves alloys
corrosion resistance
magnetism
zero thermal expansion

Access to Document

10.1002/adma.202109592

Cite this

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title = "A Seawater-Corrosion-Resistant and Isotropic Zero Thermal Expansion (Zr,Ta)(Fe,Co)2 Alloy",

abstract = "Zero thermal expansion (ZTE) alloys as dimensionally stable materials are usually challenged by harsh environmental erosion, since ZTE and corrosion resistance are generally mutually exclusive. Here, a high-performance alloy, Zr0.8Ta0.2Fe1.7Co0.3, is reported, that shows isotropic ZTE behavior (αl = 0.21(2) × 10−6 K−1) in a wide temperature range of 5–360 K, high corrosion resistance in a seawater-like solution compared with classic Invar and stainless Invar, and excellent cyclic thermal and structural stabilities. Such stabilities are attributed to the cubic symmetry, the controllable magnetic order, and the spontaneously formed passive film with Ta and Zr chemical modifications. The results are evidenced by X-ray/neutron diffraction, microscopy, spectroscopy, and electrochemistry investigations. Such multiple stabilities have the potential to broaden the robust applications of ZTE alloys, especially in marine services.",

keywords = "Laves alloys, corrosion resistance, magnetism, zero thermal expansion",

author = "Wenjie Li and Kun Lin and Yu Yan and Chengyi Yu and Yili Cao and Xin Chen and Wang, {Chin Wei} and Kenichi Kato and Yan Chen and Ke An and Qinghua Zhang and Lin Gu and Qiang Li and Jinxia Deng and Xianran Xing",

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AU - Li, Wenjie

AU - Lin, Kun

AU - Yan, Yu

AU - Yu, Chengyi

AU - Cao, Yili

AU - Chen, Xin

AU - Wang, Chin Wei

AU - Kato, Kenichi

AU - Chen, Yan

AU - An, Ke

AU - Zhang, Qinghua

AU - Gu, Lin

AU - Li, Qiang

AU - Deng, Jinxia

AU - Xing, Xianran

PY - 2022/8/25

Y1 - 2022/8/25

N2 - Zero thermal expansion (ZTE) alloys as dimensionally stable materials are usually challenged by harsh environmental erosion, since ZTE and corrosion resistance are generally mutually exclusive. Here, a high-performance alloy, Zr0.8Ta0.2Fe1.7Co0.3, is reported, that shows isotropic ZTE behavior (αl = 0.21(2) × 10−6 K−1) in a wide temperature range of 5–360 K, high corrosion resistance in a seawater-like solution compared with classic Invar and stainless Invar, and excellent cyclic thermal and structural stabilities. Such stabilities are attributed to the cubic symmetry, the controllable magnetic order, and the spontaneously formed passive film with Ta and Zr chemical modifications. The results are evidenced by X-ray/neutron diffraction, microscopy, spectroscopy, and electrochemistry investigations. Such multiple stabilities have the potential to broaden the robust applications of ZTE alloys, especially in marine services.

AB - Zero thermal expansion (ZTE) alloys as dimensionally stable materials are usually challenged by harsh environmental erosion, since ZTE and corrosion resistance are generally mutually exclusive. Here, a high-performance alloy, Zr0.8Ta0.2Fe1.7Co0.3, is reported, that shows isotropic ZTE behavior (αl = 0.21(2) × 10−6 K−1) in a wide temperature range of 5–360 K, high corrosion resistance in a seawater-like solution compared with classic Invar and stainless Invar, and excellent cyclic thermal and structural stabilities. Such stabilities are attributed to the cubic symmetry, the controllable magnetic order, and the spontaneously formed passive film with Ta and Zr chemical modifications. The results are evidenced by X-ray/neutron diffraction, microscopy, spectroscopy, and electrochemistry investigations. Such multiple stabilities have the potential to broaden the robust applications of ZTE alloys, especially in marine services.

KW - Laves alloys

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