The Corrosion Behavior of Ni₃(Si,Nb) Alloys in Boiling 70 wt.% Sulfuric Acid

Jen-Hsien Hsu; Christopher M. Larson; Joseph William Newkirk; Richard K. Brow; San-Hong Zhang

doi:10.1007/s11665-016-1883-0

The Corrosion Behavior of Ni₃(Si,Nb) Alloys in Boiling 70 wt.% Sulfuric Acid

Jen-Hsien Hsu
, Christopher M. Larson
, Joseph William Newkirk
, Richard K. Brow
, San-Hong Zhang

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

Abstract

Corrosion-resistant Ni ₃ (Si,Nb) alloys are promising materials of construction for hydrogen-production systems based on the sulfur-iodine thermochemical cycle. In this work, the corrosion rates of three differentNi ₃ (Si,Nb) alloys were measured in boiling 70 wt.% sulfuric acid and a three-stage corrosion mechanism was identified, based on the composition and morphology of surface scale that developed. The α(Ni) +β(Ni ₃ Si) eutectic constituent of the alloy microstructure was selectively attacked by acid and, when present, is detrimental to corrosion resistance. The G-phase (Ni ₁₆ Si ₁₇ Nb ₆ ) is more passive than the β-matrix and seems to contribute to a lower steady-state corrosion rate.

Original language	American English
Pages (from-to)	510-517
Number of pages	8
Journal	Journal of Materials Engineering and Performance
Volume	25
Issue number	2
DOIs	https://doi.org/10.1007/s11665-016-1883-0
State	Published - Feb 1 2016

Keywords

Corrosion
Corrosion Rate
Corrosion Resistance
Hydrogen Production
Iodine
Nickel
Silicon
Sulfur
Sulfuric Acid
Alloy Microstructure
Corrosion Mechanisms
Hydrogen Production Systems
Materials of Constructions
Morphology of Surfaces
Ni-Si Alloy
Sulfur-Iodine Cycles
Thermochemical Cycles
Silicon Alloys
Ni-Si Alloys
Sulfur-Iodine Cycle

Disciplines

Materials Science and Engineering

Access to Document

10.1007/s11665-016-1883-0License: CC BY

https://doi.org/10.1007/s11665-016-1883-0

Cite this

@article{d91bb9347c41454da5de91e7aadcee60,

title = "The Corrosion Behavior of Ni₃(Si,Nb) Alloys in Boiling 70 wt.\% Sulfuric Acid",

abstract = " Corrosion-resistant Ni 3 (Si,Nb) alloys are promising materials of construction for hydrogen-production systems based on the sulfur-iodine thermochemical cycle. In this work, the corrosion rates of three differentNi 3 (Si,Nb) alloys were measured in boiling 70 wt.\% sulfuric acid and a three-stage corrosion mechanism was identified, based on the composition and morphology of surface scale that developed. The α(Ni) +β(Ni 3 Si) eutectic constituent of the alloy microstructure was selectively attacked by acid and, when present, is detrimental to corrosion resistance. The G-phase (Ni 16 Si 17 Nb 6 ) is more passive than the β-matrix and seems to contribute to a lower steady-state corrosion rate.",

keywords = "Corrosion, Corrosion Rate, Corrosion Resistance, Hydrogen Production, Iodine, Nickel, Silicon, Sulfur, Sulfuric Acid, Alloy Microstructure, Corrosion Mechanisms, Hydrogen Production Systems, Materials of Constructions, Morphology of Surfaces, Ni-Si Alloy, Sulfur-Iodine Cycles, Thermochemical Cycles, Silicon Alloys, Ni-Si Alloys, Sulfur-Iodine Cycle",

author = "Jen-Hsien Hsu and Larson, \{Christopher M.\} and Newkirk, \{Joseph William\} and Brow, \{Richard K.\} and San-Hong Zhang",

note = "Publisher Copyright: {\textcopyright} 2016, ASM International.",

year = "2016",

month = feb,

day = "1",

doi = "10.1007/s11665-016-1883-0",

language = "American English",

volume = "25",

pages = "510--517",

journal = "Journal of Materials Engineering and Performance",

issn = "1544-1024",

number = "2",

}

TY - JOUR

T1 - The Corrosion Behavior of Ni₃(Si,Nb) Alloys in Boiling 70 wt.% Sulfuric Acid

AU - Hsu, Jen-Hsien

AU - Larson, Christopher M.

AU - Newkirk, Joseph William

AU - Brow, Richard K.

AU - Zhang, San-Hong

PY - 2016/2/1

Y1 - 2016/2/1

N2 - Corrosion-resistant Ni 3 (Si,Nb) alloys are promising materials of construction for hydrogen-production systems based on the sulfur-iodine thermochemical cycle. In this work, the corrosion rates of three differentNi 3 (Si,Nb) alloys were measured in boiling 70 wt.% sulfuric acid and a three-stage corrosion mechanism was identified, based on the composition and morphology of surface scale that developed. The α(Ni) +β(Ni 3 Si) eutectic constituent of the alloy microstructure was selectively attacked by acid and, when present, is detrimental to corrosion resistance. The G-phase (Ni 16 Si 17 Nb 6 ) is more passive than the β-matrix and seems to contribute to a lower steady-state corrosion rate.

AB - Corrosion-resistant Ni 3 (Si,Nb) alloys are promising materials of construction for hydrogen-production systems based on the sulfur-iodine thermochemical cycle. In this work, the corrosion rates of three differentNi 3 (Si,Nb) alloys were measured in boiling 70 wt.% sulfuric acid and a three-stage corrosion mechanism was identified, based on the composition and morphology of surface scale that developed. The α(Ni) +β(Ni 3 Si) eutectic constituent of the alloy microstructure was selectively attacked by acid and, when present, is detrimental to corrosion resistance. The G-phase (Ni 16 Si 17 Nb 6 ) is more passive than the β-matrix and seems to contribute to a lower steady-state corrosion rate.

KW - Corrosion

KW - Corrosion Rate

KW - Corrosion Resistance

KW - Hydrogen Production

KW - Iodine

KW - Nickel

KW - Silicon

KW - Sulfur

KW - Sulfuric Acid

KW - Alloy Microstructure

KW - Corrosion Mechanisms

KW - Hydrogen Production Systems

KW - Materials of Constructions

KW - Morphology of Surfaces

KW - Ni-Si Alloy

KW - Sulfur-Iodine Cycles

KW - Thermochemical Cycles

KW - Silicon Alloys

KW - Ni-Si Alloys

KW - Sulfur-Iodine Cycle

UR - https://scholarsmine.mst.edu/matsci_eng_facwork/2187

UR - https://doi.org/10.1007/s11665-016-1883-0

U2 - 10.1007/s11665-016-1883-0

DO - 10.1007/s11665-016-1883-0

M3 - Article

SN - 1544-1024

VL - 25

SP - 510

EP - 517

JO - Journal of Materials Engineering and Performance

JF - Journal of Materials Engineering and Performance

IS - 2

ER -

The Corrosion Behavior of Ni₃(Si,Nb) Alloys in Boiling 70 wt.% Sulfuric Acid

Abstract

Keywords

Disciplines

Access to Document

Other files and links

Fingerprint

Cite this