Electro-deposition of oxide-dispersed nickel composites and the behavior of their mechanical properties

Kim, Myong Jin; Kim, Joung Soo; Kim, Dong Jin; Kim, Hong Pyo

doi:10.1007/s12540-009-0789-2

Cited by 19 publications

(11 citation statements)

References 16 publications

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“…Nanocomposite coatings consisting of dispersed pure metals, ceramics and organic ultrafine particles in a metallic matrix have attracted much attention from material scientists and engineers over the past few years due to their advanced physical, chemical and mechanical properties (Hovestad and Janssen 2005;Kim 2009;Zanella et al 2009). A variety of coating techniques have been introduced for metal matrix composite coatings such as plasma spraying, physical vapor deposition (PVD) and electroplating of which the latter is a flexible, low-cost, lowtemperature and quite a mature technique with well-studied controlling parameters and industrial applicability.…”

Section: Introductionmentioning

confidence: 99%

Characterization of novel Ni–Al2O3–SiC nanocomposite coatings synthesized by co-electrodeposition

2013

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In the present work, Ni-Al 2 O 3 , Ni-SiC and novel Ni-Al 2 O 3 -SiC metal matrix composite (MMC) coatings were electrodeposited onto pure copper samples using a modified Watt's nickel electroplating bath containing nano alumina and silicon carbide particles with an average particle size of 50 nm. The composition, crystalline structure and surface morphology of the deposits were characterized by X-ray diffractometry (XRD), energy-dispersive X-ray spectroscopy (EDS) and field emission scanning electron microscopy (FESEM). The results indicated that Ni-Al 2 O 3 -SiC hybrid composite films with an acceptable homogeneity and granular structure having 9.2 and 7.7 % vol. Al 2 O 3 and SiC nanoparticles, respectively were developed successfully. The nanoparticles incorporated in the nickel layer effectively increased the micro hardness and wear resistance owing to dispersion and grain-refinement strengthening, changing the nickel matrix morphology as well as the texture and preferred grain growth direction from \100[ to the close-packed \111[. The oxidation resistance of the Ni-Al 2 O 3 -SiC hybrid composite coatings was measured to be approximately 41 % greater than the unreinforced Ni deposit and almost 30 % better than the Ni-Al 2 O 3 composite coatings.

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Section: Introductionmentioning

confidence: 99%

Characterization of novel Ni–Al2O3–SiC nanocomposite coatings synthesized by co-electrodeposition

2013

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“…With the rapid development of the aviation, aerospace, power supply and sailing, crucial demands have emerged on functional materials under specific environments [1]. Metal matrix composite (MMC) coatings have been widely applied in many industries due to its high temperature resistance, oxidation resistance, high hardness and wear resistance as compared to pure metal coatings [2][3][4][5][6][7][8]. However, it has been shown that the ceramic particles incorporated in the composite coatings deteriorate the adhesion of the coatings to the substrate which, as a result, reduces their wear resistance significantly.…”

Section: Introductionmentioning

confidence: 99%

Nano-Grain Ni/ZrO2 Functional Gradient Coating Fabricated by Double Pulses Electrodeposition with Enhanced High Temperature Corrosion Performance

Wen

Mei-jiao

et al. 2020

Coatings

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Functional gradient materials (FGM) have many excellent properties, and high-performance gradient coating exhibits good prospective application. In this paper, the nano-grain Ni/ZrO2 gradient coating was prepared by double pulse electrodeposition (BP). The surface morphology, crystal structure and electrochemical corrosion resistance of the nano-grain Ni/ZrO2 coating and Ni coating, annealed at different temperatures (400–800 °C), have been compared. In the vertical direction to the substrate surface, the content of ZrO2 increases from 0% to 34.99%. X-ray diffraction (XRD) revealed that the average crystal size of Ni/ZrO2 gradient coating gradually increases from 13.75 to 27.75 nm, and the crystal structure is a face-centered cubic (FCC). The main crystal orientation faces are (111) and (200), while the (200) face exhibited a stronger preferred orientation. Compared with the Ni coating by scanning electron microscopy, the surface morphology of double pulse fabricated Ni/ZrO2 gradient coating was revealed as being smoother, denser, and having fewer pores, and the crystal particle size distribution became narrow. X-ray photoelectron spectroscopy (XPS) shows that the chemical binding states of elements Ni and Zr have been altered. The binding energies of 2p3/2 and 2p1/2 for Ni have been increased, resulting in a higher electron donor state of Ni. The binding energy of 3d5/2 and 3d3/2 of Zr4+ in ZrO2 is decreased, thus becoming better electron acceptors. Chemical bonding has been formed at the Ni/ZrO2 interface. This study demonstrated that double pulse electrodeposition is a promising fabrication method for functional gradient coatings for high temperature applications.

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“…To resolve the possible softening of the NiP electrodeposits, an electroplating method for ternary Ni alloys, Ni-P-Fe and Ni-P-B, has been developed by the authors of this paper [8,9]. In addition, an electroplating method of oxide-dispersed Ni composites was tried to endow the structural integrity of the repaired tubes [10]. The stress corrosion cracking property of these ternary Ni alloys was evaluated to be the same as that of the NiP electrodeposit.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of electrodeposited ternary Ni-alloys for thermal stability

Kim

et al. 2011

Met. Mater. Int.

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Electroplating methods for ternary Ni-alloys, such as Ni-P-Fe and Ni-P-B, in a Ni sulfamate solution on the inner wall surfaces of Alloy 600 tubing have been developed in order to use them to repair steam generator tubes damaged by a variety of corrosion mechanisms, in particular, by stress corrosion cracking. In this study, the stability of their microstructures and mechanical properties were evaluated to check if they could be used for a long period of time at the operating temperature of a PWR (pressurized water reactor) in nuclear power plants. The specimens were heat treated at 325°C and 400°C for 10, 20 and 30 days, followed by observation of their microstructures and measurement of their microhardness and tensile property. According to the experiment results, there was no noticeable change in their microstructures or microhardness with the heat treatment temperature and time conditions used in this study. For a Ni-P-B deposit, the ultimate tensile strength (UTS) slightly increased with the heat treatment time, while their elongation decreased. In the case of a Ni-P-Fe deposit, however, its tensile property varied with the applied current density. For a Ni-P-Fe deposit plated at an applied current density of 50 mA/cm 2 , its UTS slightly decreased, but its elongation slightly increased with the heat treatment time. We concluded that the thermal stability of the ternary Ni-alloy deposits used in this study is good enough to be used with the materials of operating nuclear power plants.

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Electro-deposition of oxide-dispersed nickel composites and the behavior of their mechanical properties

Cited by 19 publications

References 16 publications

Characterization of novel Ni–Al2O3–SiC nanocomposite coatings synthesized by co-electrodeposition

Characterization of novel Ni–Al2O3–SiC nanocomposite coatings synthesized by co-electrodeposition

Nano-Grain Ni/ZrO2 Functional Gradient Coating Fabricated by Double Pulses Electrodeposition with Enhanced High Temperature Corrosion Performance

Evaluation of electrodeposited ternary Ni-alloys for thermal stability

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