Characterization of plasma sprayed Fe-10Cr-10Mo-(C,B) amorphous coatings

Kishitake, Katsuhiko; Era, Hidenori; Otsubo, Fumitaka

doi:10.1007/bf02646428

Cited by 41 publications

(18 citation statements)

References 10 publications

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“…[1][2][3] It is reported that coatings of an perfectly amorphous phase were formed in many iron-based alloys by using a low pressure plasma spraying (LPPS) process and the amorphous coating of Fe-10%Cr-2%C-8%P (mass%) alloy showed very good corrosion resistance in acid solutions.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Resistance of Fe-16%Cr-30%Mo-(C,B,P) Amorphous Coatings Sprayed by HVOF and APS Processes

Otsubo

Kishitake

2005

Mater. Trans.

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Two kinds of Fe-16%Cr-30%Mo-(C,B,P) alloy powders having high ability to form an amorphous phase were thermal sprayed onto mild steel substrate using HVOF and APS processes. Perfectly amorphous coating was formed not only by the HVOF process but also by the APS process. The passive current densities of the amorphous coatings sprayed by the HVOF and APS processes were close each other and significantly low compared with that of SUS316L coating in 1 molÁL À1 HCl solution. The coatings of perfectly amorphous phase were little corroded after immersion tests in 1 molÁL À1 HCl solution for one week, though the coatings composed of the mixture of amorphous and crystalline phases corroded markedly.

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Section: Introductionmentioning

confidence: 99%

Corrosion Resistance of Fe-16%Cr-30%Mo-(C,B,P) Amorphous Coatings Sprayed by HVOF and APS Processes

Otsubo

Kishitake

2005

Mater. Trans.

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“…[1][2][3] Compositions of several iron-based amorphous metals were published, including some with very good corrosion resistance. Examples included thermally sprayed coatings of Fe-10Cr-10-Mo-(C,B), bulk Fe-Cr-Mo-C-B, and Fe-Cr-Mo-C-B-P. [4][5][6] The corrosion resistance of an iron-based amorphous alloy with yttrium (Y), Fe 48 Mo 14 Cr 15 Y 2 C 15 B 6 was also established. [7][8][9] Yttrium was added to this alloy to lower the critical cooling rate.…”

Section: Introductionmentioning

confidence: 99%

Applications in the Nuclear Industry for Thermal Spray Amorphous Metal and Ceramic Coatings

Blink

Farmer

Choi

et al. 2009

Metall Mater Trans A

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Amorphous metal and ceramic thermal spray coatings have been developed with excellent corrosion resistance and neutron absorption. These coatings, with further development, could be cost-effective options to enhance the corrosion resistance of drip shields and waste packages, and limit nuclear criticality in canisters for the transportation, aging, and disposal of spent nuclear fuel. Iron-based amorphous metal formulations with chromium, molybdenum, and tungsten have shown the corrosion resistance believed to be necessary for such applications. Rare earth additions enable very low critical cooling rates to be achieved. The boron content of these materials and their stability at high neutron doses enable them to serve as high efficiency neutron absorbers for criticality control. Ceramic coatings may provide even greater corrosion resistance for waste package and drip shield applications, although the boron-containing amorphous metals are still favored for criticality control applications. These amorphous metal and ceramic materials have been produced as gas-atomized powders and applied as near full density, nonporous coatings with the high-velocity oxy-fuel process. This article summarizes the performance of these coatings as corrosion-resistant barriers and as neutron absorbers. This article also presents a simple cost model to quantify the economic benefits possible with these new materials.

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“…[1][2][3][4] Compositions of several iron-based amorphous metals were published, including several with very good corrosion resistance. Examples included: thermally sprayed coatings of Fe-10Cr-10-Mo-(C,B), bulk Fe-Cr-Mo-C-B, and Fe-Cr-Mo-C-B-P. [5][6][7] The corrosion resistance of an iron-based amorphous alloy with yttrium (Y), Fe 48 Mo 14 Cr 15 Y 2 C 15 B 6 was also been established. [8][9][10][11][12] Yttrium was added to this alloy to lower the critical cooling rate.…”

Section: Introductionmentioning

confidence: 99%

Long-Term Corrosion Tests of Prototypical SAM2X5 (Fe49.7Cr17.7Mn1.9Mo7.4W1.6B15.2C3.8Si2.4) Coatings

Farmer¹,

Choi²,

Saw³

et al. 2007

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An iron-based amorphous metal with good corrosion resistance and a high absorption crosssection for thermal neutrons has been developed and is reported here. This amorphous alloy has the approximate formula Fe 49.7 Cr 17.7 Mn 1.9 Mo 7.4 W 1.6 B 15.2 C 3.8 Si 2.4 and is known as SAM2X5. Chromium (Cr), molybdenum (Mo) and tungsten (W) were added to provide corrosion resistance, while boron (B) was added to promote glass formation and the absorption of thermal neutrons. Since this amorphous metal has a higher boron content than conventional borated stainless steels, it provides the nuclear engineer with design advantages for criticality control structures with enhanced safety.15-17 While melt-spun ribbons with limited practical applications were initially produced, large quantities (several tons) of gas atomized powder have now been produced on an industrial scale, and applied as thermal-spray coatings on prototypical half-scale spent nuclear fuel containers and neutron-absorbing baskets. These prototypes and other SAM2X5 samples have undergone a variety of corrosion testing, including both salt-fog and long-term immersion testing. The modes and rates of corrosion have been determined in the various environments, and are reported here. While these coatings have less corrosion resistance than melt-spun ribbons and optimized coatings produced in the laboratory, substantial corrosion resistance has been achieved.

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Characterization of plasma sprayed Fe-10Cr-10Mo-(C,B) amorphous coatings

Cited by 41 publications

References 10 publications

Corrosion Resistance of Fe-16%Cr-30%Mo-(C,B,P) Amorphous Coatings Sprayed by HVOF and APS Processes

Corrosion Resistance of Fe-16%Cr-30%Mo-(C,B,P) Amorphous Coatings Sprayed by HVOF and APS Processes

Applications in the Nuclear Industry for Thermal Spray Amorphous Metal and Ceramic Coatings

Long-Term Corrosion Tests of Prototypical SAM2X5 (Fe49.7Cr17.7Mn1.9Mo7.4W1.6B15.2C3.8Si2.4) Coatings

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