Tribological properties of structural steel modified by fine particle bombardment (FPB) and diamond-like carbon hybrid surface treatment

Kameyama, Yutaka; Komotori, Jun

doi:10.1016/j.wear.2007.01.075

Cited by 36 publications

(18 citation statements)

References 23 publications

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“…In this study, fine particle peening (FPP) treatment was applied for titanium alloy because the FPP treatment can improve the fatigue strength of metallic materials. In addition, the FPP treatment can create transferred layer consisted shot particle [4]- [6]. Thus, it is expected that the FPP treatment using hydroxyapatite shot particles can improve the fatigue strength and create HAp layer on the substrate.…”

Section: Introductionmentioning

confidence: 99%

Effect of Fine Particle Peening Using Hydroxyapatite Shot Particles and Plasma Sprayed Hydroxyapatite Coating on Fatigue Properties of Beta Titanium Alloy

Nakamura¹,

Aoki²,

Shimizu³

et al. 2017

WIT Transactions on Engineering Sciences

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Fine particle peening (FPP) and plasma spraying using hydroxyapatite particles were applied to a beta titanium alloy, Ti-22V-4Al, to form the hydroxyapatite (HAp) layer on the surface. As a result, HAp layer was formed on the specimen surface by the both treatments. The thicknesses were 5 m and 100m, respectively for FPP treated and plasma sprayed specimens. In the FPP treated specimen, Vickers hardness was increased by FPP compared with that of the untreated specimens, resulting in work-hardening. Rotary bending fatigue tests were carried out on both treated and untreated specimens. The FPP treated specimens exhibited higher fatigue strength than the untreated specimens. It is due to the increase in hardness and compressive residual stress by FPP. On the other hand, significant deteriorations of the fatigue strength for the plasma sprayed specimen was observed in comparison with the result for the untreated specimen. As a result of fracture surface observation in plasma sprayed specimen, the defect formed by blasting before the plasma spraying at interface between substrate and HAp layer was observed at crack initiation site. Thus, the defect plays a role as the crack starter in the case of plasma sprayed specimen. Keywords: fatigue, fine particle peening, plasma spray, titanium alloy, hydroxyapatite. INTRODUCTIONTitanium alloys have been used as implant components due to their high corrosion resistance, good biological compatibility and so on. In recent years, plasma and thermal spraying have been applied for titanium alloy to form the hydroxyapatite (HAp) layer on the surface and to improve osteo-conductivity [1]- [3]. However, Laonapakul et al. reported that delamination and spallation of the coating layer formed by plasma spraying occur under cyclic loading [3]. In this study, fine particle peening (FPP) treatment was applied for titanium alloy because the FPP treatment can improve the fatigue strength of metallic materials. In addition, the FPP treatment can create transferred layer consisted shot particle [4]- [6]. Thus, it is expected that the FPP treatment using hydroxyapatite shot particles can improve the fatigue strength and create HAp layer on the substrate.The aim of this study is to form HAp transferred layer on the substrate by FPP and to compare the fatigue strength of FPP using HAp particles treated specimen and HAp coated specimen by plasma spraying. Rotating bending fatigue tests were carried out for FPP treated specimens. Tests were also conducted on untreated specimens and hydroxyapatite coated specimens by plasma spraying for comparison. Fracture surface of all the failed specimens were examined in a scanning electron microscope (SEM). The effects of FPP and plasma spray on fracture mechanisms are also discussed in the light of fractography.

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Section: Introductionmentioning

confidence: 99%

Effect of Fine Particle Peening Using Hydroxyapatite Shot Particles and Plasma Sprayed Hydroxyapatite Coating on Fatigue Properties of Beta Titanium Alloy

Nakamura¹,

Aoki²,

Shimizu³

et al. 2017

WIT Transactions on Engineering Sciences

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“…To improve these properties, high-strength materials are often subjected to surface modi cation. Fine particle peening (FPP) is expected to enhance corrosion resistance and tribological characteristics in addition to applying compressive residual stress [1][2][3][4][5] and improving fatigue strength through grain re nement [6][7][8][9][10][11] because the shot particle elements are transferred onto the surface to be treated [12][13][14][15][16][17] . Consequently, this treatment is a promising surface modi cation method for metals.…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of Carbon Steel by Atmospheric-Controlled IH-FPP Treatment Using Mixed Chromium and High-Speed Steel Particles

et al. 2016

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First, in this paper, a new atmospheric-controlled induction heating and ne particle peening treatment system (vacuum AIH-FPP system) which reduces the oxygen concentration in the chamber to the order of ppm, much less than a conventional processing apparatus was presented. Next, in order to examine the effect on the formation of the surface modi ed layer of (i) mixing hard particles, (ii) the processing temperature, and (iii) the particle velocity, carbon steel AISI 1045 was treated with this system in conjunction with high-frequency induction heating, by peening Cr particles and mixed particles of Cr and high-speed tool steel. From the observation results by a scanning electron microscope and an energy dispersive X-ray spectrometer, it is clear that for the formation of a Cr diffused layer, using a mixture of Cr particles and high-speed tool steel particles is important. The treatment must be conducted at a higher temperature of approximately 1273 K to form a Cr diffused layer. Furthermore, by increasing the particle velocity, a thicker Cr transfer layer is formed at the surface under process. Therefore, an increased particle velocity accelerates the transfer of Cr.

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“…In recent years, diamond-like carbon (DLC) films have attracted much attention in many industrial fields because of their excellent tribological properties, high hardness, chemical inertness and biocompatibility [1][2][3][4][5][6][7][8][9][10][11] . …”

Section: Introductionmentioning

confidence: 99%

Fatigue Properties and Fracture Mechanism of Steel Coated With Diamond-Like Carbon Films

Akebono

Kato

Sugeta

2012

Int. J. Mod. Phys. Conf. Ser.

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Diamond-like carbon (DLC) films have attracted much attention in many industrial fields because of their excellent tribological properties, high hardness, chemical inertness and biocompatibility. In order to examine the fatigue properties and to clear the fracture mechanism of DLC coated materials, AISI4140 steel coated with DLC films by using unbalanced magnetron sputtering method was prepared and two types of fatigue test were carried out by using a tension and compression testing machine with stress ratio -1 and a bending testing machine with stress ratio -1 with a focused on the fatigue crack behavior in detail. The fracture origin changed from the slip deformation to micro defects at surface whose size didn't affect the fatigue crack initiation behavior in the case of Virgin series because the hard coating like DLC films make the defect sensitivity of coated material higher.. However, DLC series indicated higher fatigue strengths in finite life region and fatigue limit compared with Virgin series. From the continuously observation by using a plastic replicas technique, it is clear that there are no noticeable differences on fatigue crack propagation rate between the Virgin and DLC series, however the fatigue crack initiation of DLC series was delayed significantly by existence of DLC films compared with Virgin series.

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Tribological properties of structural steel modified by fine particle bombardment (FPB) and diamond-like carbon hybrid surface treatment

Cited by 36 publications

References 23 publications

Effect of Fine Particle Peening Using Hydroxyapatite Shot Particles and Plasma Sprayed Hydroxyapatite Coating on Fatigue Properties of Beta Titanium Alloy

Effect of Fine Particle Peening Using Hydroxyapatite Shot Particles and Plasma Sprayed Hydroxyapatite Coating on Fatigue Properties of Beta Titanium Alloy

Surface Modification of Carbon Steel by Atmospheric-Controlled IH-FPP Treatment Using Mixed Chromium and High-Speed Steel Particles

Fatigue Properties and Fracture Mechanism of Steel Coated With Diamond-Like Carbon Films

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