Laser-processed corrosion-resistant amorphous NiCrPB surface alloys on a mild steel

Yoshioka, H.; Asami, K.; Kawashima, A.; Hashimoto, Kôji

doi:10.1016/0010-938x(87)90064-3

Cited by 69 publications

(22 citation statements)

References 9 publications

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“…5,6) Thus, Iaser succession of stratified layers without defined microstructure, as can be seen in the cross-section observation of the samples (Fig. l) As can be seen in Fig.…”

Section: Introductionmentioning

confidence: 56%

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Microstructure and Corrosion Behaviour of Ni-P Laser Surface Alloys.

et al. 1996

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“…5,6) Thus, Iaser succession of stratified layers without defined microstructure, as can be seen in the cross-section observation of the samples (Fig. l) As can be seen in Fig.…”

Section: Introductionmentioning

confidence: 56%

“…These 45 ptm coating thickness laser treated coatings are not suitable for technological applications. (5) The laser treatment at 2.52 m/min scanning rate of Ni-P coatings of 1 80~m coat thickness increases the corrosion resistance of initial Ni-P electroless coating in the mediumand during the time studied.…”

Section: Introductionmentioning

confidence: 90%

Microstructure and Corrosion Behaviour of Ni-P Laser Surface Alloys.

et al. 1996

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“…12) Hashimoto et al reported that the Ni-Cr-P-B quaternary amorphous alloys possessed excellent corrosion resistance. 13) Recently, we found that the Ni-Cr-P-B amorphous alloy had a wide super-cooled liquid region, ÁT x . 14) We have studied the metallic glassy alloys for bipolar plate and tried to produce metallic glassy alloy bipolar plates by melt-spinning and subsequent hot-pressing at around T g .…”

Section: Introductionmentioning

confidence: 99%

Production of Ni65Cr15P16B4 Metallic Glass-Coated Bipolar Plate for Fuel Cell by High Velocity Oxy-Fuel (HVOF) Spray Coating Method

Kim

Yamaura

Shimizu³

et al. 2010

Mater. Trans.

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In this study, the newly designed bipolar plate for proton exchange membrane fuel cells (PEMFC) was produced by spray-coating the Ni 65 Cr 15 P 16 B 4 metallic glassy alloy on Al plate. The Ni 65 Cr 15 P 16 B 4 metallic glass was adopted as a coating material because of its excellent corrosion resistance and the high velocity oxy-fuel (HVOF) spray coating was used for the metallic glass deposition on the Al plates having a bipolar plate flow field.The corrosion resistance of the Ni 65 Cr 15 P 16 B 4 glassy alloy film produced by the HVOF spray-coating was studied under simulated PEMFC environments. As a result, the Ni 65 Cr 15 P 16 B 4 glassy alloy film showed lower corrosion current density than the high-corrosion-resistant stainless steel SUS316L. Then, the electricity generation tests with the single cell having the Ni 65 Cr 15 P 16 B 4 glassy alloy-coated bipolar plates produced in this study were conducted. As a result, the single cell with the metallic glass-coated bipolar plates showed very high I-V performance as well as the cell with the carbon bipolar plates. The long time durability tests for 24 h were also conducted at the constant current density of 200 mAÁcm À2 . As a result, the single cell with the glass-coated bipolar plates showed no voltage drop during the test. So, it was found in this study that the Ni 65 Cr 15 P 16 B 4 glassy alloy-coated bipolar plate produced by the HVOF spray-coating have a potential for practical use for the fuel cells.

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“…[3,4] The enhanced corrosion resistance of LSM alloys was assumed to arise primarily from the size reduction and dispersal of secondary phase particles initially present on the surface. [1] These inclusions preferentially increase the corrosion susceptibility of conventional alloys through corrosion initiation mechanisms that depend on the intrinsic susceptibility of the heterogeneous particle, its critical defect size and, as recently discovered, the critical defect surface density that enable cooperative interactions between corrosion sites.…”

Section: Introduction Motivation and Objectivesmentioning

confidence: 99%

Laser Surface Modification of a Crystalline Al‐Co‐Ce Alloy for Enhanced Corrosion Resistance

et al. 2005

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The surfaces of Al‐Co‐Ce bulk crystalline alloys have been successfully laser processed resulting in amorphous‐like surface layer formation with enhanced corrosion characteristics. The material system, Al84Co7.5Ce8.5, is one of several next generation alloy compositions scientifically designed to form a metallic glass under the proper processing conditions. This material system exhibits both local composition changes and enhanced corrosion resistance in comparison to their native counterparts.

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Laser-processed corrosion-resistant amorphous NiCrPB surface alloys on a mild steel

Cited by 69 publications

References 9 publications

Microstructure and Corrosion Behaviour of Ni-P Laser Surface Alloys.

Microstructure and Corrosion Behaviour of Ni-P Laser Surface Alloys.

Production of Ni<SUB>65</SUB>Cr<SUB>15</SUB>P<SUB>16</SUB>B<SUB>4</SUB> Metallic Glass-Coated Bipolar Plate for Fuel Cell by High Velocity Oxy-Fuel (HVOF) Spray Coating Method

Laser Surface Modification of a Crystalline Al‐Co‐Ce Alloy for Enhanced Corrosion Resistance

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