Synthesis and properties of open-cell Ni–Cr–Fe–Al alloy foams by pack co-deposition process

Pang, Qiu; Xiu, Ziyang; Wu, Guanglei; Jiang, Longtao; Sun, Dalin; Hu, Zhili

doi:10.1016/j.jmatprotec.2012.06.017

Cited by 16 publications

(5 citation statements)

References 20 publications

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“…The weight gains of foam B and C after 60-h oxidation were 7.9% and 11.1%, respectively. Compared with references[7] and[9], Ni-Al foams achieved better oxidation resistance than Ni-Cr and Ni-Cr-Fe foams despite the high oxidation temperature and specific surface area. XRD were carried out to investigate the phase change and oxidation products of Ni-Al foams after 60-h oxidation(Fig.…”

mentioning

confidence: 71%

“…Choe [4] alloyed nickel foams with 8-9 wt% Al or 14-18 wt% Cr and 5-9 wt% Al, and found their mechanical properties improved apparently because of the c/c 0 structure. Pang et al [8,9] synthesized Ni-Cr-Fe and Ni-Cr-Fe-Al alloy foams by pack-cementation co-deposition and reported that the formation of continuous protective oxide film provided good oxidation resistance up to 1000°C, and alloying improved the mechanical properties of foam both at ambient and elevated temperatures. In these studies, oxidation temperature was not more than 1000°C, and Cr was used to form protective oxide films.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and Compression Property of Oxidation-Resistant Ni–Al Foams

Zeng

Hou

Ding

et al. 2017

Acta Metall. Sin. (Engl. Lett.)

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Three different Ni-Al foams were synthesized by vapor aluminizing with control of aluminizing time. Oxidation tests under 1100°C and compression tests were conducted to evaluate the oxidation resistance and compression properties of the foams. X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive spectroscopy (EDS) tests were carried out to study the phase composition and microstructure of Ni-Al foams before and after oxidation. Results showed that vapor aluminizing process did not change the foam macro-and microstructure, and the phase composition became from b/c 0-phase to single b-phase as the aluminizing time extending. The Ni-Al foams possessed excellent oxidation resistance, and decreased Al content increased oxidation weight gain and altered oxidation products. Foams containing single b-phase presented obvious brittleness under compression tests, but the foam with b/c 0-phase exhibited elasticity and toughness to a certain extent. The elasticity and toughness of the foams significantly can be improved after oxidation because of the phase changing in matrix during oxidation, and the pre-oxidized high-Al-content Ni-Al foams exhibited good compression properties, as well as excellent oxidation resistance.

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mentioning

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Synthesis and Compression Property of Oxidation-Resistant Ni–Al Foams

Zeng

Hou

Ding

et al. 2017

Acta Metall. Sin. (Engl. Lett.)

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“…However, the electrodeposition process requires that the substrate must be electrically conductive. Furthermore, irregular substrate shape and uneven charge distribution may result in nonuniform deposition of coatings . To broaden the applications of nickel foams, an available technique for the introduction of the second metal element to nickel foams to achieve superior mechanical and functional properties is crucial.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and properties of open‐cell Ni–Sn–P alloy foams prepared by electroless plating

Liu

Gan

Zhou

2019

Materials & Corrosion

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In this study, open-cell Ni-Sn-P alloy foams were prepared by electroless plating. The influence of tin content on the surface morphology and properties of Ni-Sn-P alloy foams were investigated. The surface structure of Ni-Sn-P alloy foams became more uniform and compact with the increase of Sn content.The X-ray diffraction result showed that Ni-Sn-P alloy foams gradually transformed from an amorphous structure into crystallization with the increase of heat-treatment temperature. The introduction of Sn significantly enhanced the corrosion resistance of Ni-P coatings in 3.5 wt% NaCl solution, the corrosion current density decreased from 5.022 to 0.805 μA/cm 2 and the corrosion potential shifted positively from −0.423 to −0.294 V after adding 5.96 wt% Sn to Ni-P coatings. However, the corrosion resistance of Ni-Sn-P foams was deteriorated after heat treatment. Adding Sn to the Ni-P system slightly weakened the compressive strength of Ni-P binary foams. Nevertheless, significant improvement in the antioxidant performance of Ni-Sn-P alloy foams was indicated by the reduction of the mass change rate in that the mass change rate of Ni-P foams obviously reduced from 5.15% to 0.25% after adding 5.96 wt% Sn. K E Y W O R D Scorrosion resistance, electroless plating, heat treatment, Ni-Sn-P alloy foams, oxidation resistance

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“…The refractory approach has been successful, but is significantly more difficult and costly than working with nonrefractory metals such as Ni. Concurrently, Hodge et al and others , have applied the pack aluminization process to large cell stochastic Ni foams to improve their thermo-mechanical properties. Through a high temperature, two-step approach, the stochastic Ni foams were completely converted to the NiAl intermetallic phase, demonstrating that the aluminization process is not limited to coating applications.…”

Section: Introductionmentioning

confidence: 99%

Pack Aluminization Assisted Enhancement of Thermo-mechanical Properties in Nickel Inverse Opal Structures

et al. 2018

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A low temperature, vapor phase approach to improve the thermal stability of nonrefractory deterministically structured inverse opals is demonstrated. Specifically, pack aluminization at 550 °C was conducted on Ni inverse opals, introducing controlled amounts of Al into the structure. This enabled the formation of a strengthening Ni 3 Al phase, resulting in enhanced high temperature strength and stability. Following aluminization, the deterministic structures remained stable up to 1000 °C, a 500 °C increase relative to the starting Ni inverse opals. The thermal stability of the aluminized structures is comparable to that of much more difficult to fabricate deterministically structured refractory structures. Additionally, the pack aluminized structures exhibited a 17.6% increase in elastic modulus and an 81.6% increase in hardness relative to the initial Ni inverse opal. This is a promising combination of thermo-mechanical properties for very fine, deterministic structures used in high temperature, chemically harsh environments.

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Synthesis and properties of open-cell Ni–Cr–Fe–Al alloy foams by pack co-deposition process

Cited by 16 publications

References 20 publications

Synthesis and Compression Property of Oxidation-Resistant Ni–Al Foams

Synthesis and Compression Property of Oxidation-Resistant Ni–Al Foams

Microstructure and properties of open‐cell Ni–Sn–P alloy foams prepared by electroless plating

Pack Aluminization Assisted Enhancement of Thermo-mechanical Properties in Nickel Inverse Opal Structures

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