Characteristics and growth kinetics of plasma paste borided Cp–Ti and Ti6Al4V alloy

Ataibis, Volkan; Taktak, Sukru

doi:10.1016/j.surfcoat.2015.08.023

Cited by 50 publications

(19 citation statements)

References 32 publications

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“…Table 1 lists the experimental values of parabolic growth constants at the (TiB 2 /TiB) and (TiB/Ti) interfaces. The estimated values of boron diffusivities (using equations (15) and (16)) for TiB 2 and TiB layers are given in Table 2. The boron diffusivity values obtained in the present study are consistent with the values reported in the literature.…”

Section: Resultsmentioning

confidence: 99%

A diffusion model for the titanium borides on pure titanium

Кеддам

Taktak

Taşgetiren

2016

Surface Engineering

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In the present study, commercial pure titanium was successfully plasma paste borided using borax paste at a temperature of 700, 750 and 800°C for 3, 5 and 7 h. The X-ray diffraction and scanning electron microscopy techniques revealed the presence of both TiB 2 top-layer and TiB whiskers sub-layer. The formation rates of the TiB 2 layer and TiB whiskers were found to have a parabolic character at all applied process temperatures. Based on the present Ti borides growth data, correspondent diffusion temperature and time, an analytical diffusion model was used to estimate boron diffusion coefficients and activation energies of the boride phases in a binary multiphase Ti-B system. Depending on the temperature and layer thickness, the activation energies of boron in TiB 2 and TiB phases were determined to be 137.55 ± 0.5 and 55.21 ± 0.5 kJ mol −1 , respectively. These values of boron activation energies for pure titanium were compared to the literature data. Nomenclature t the treatment time (s) C TiB2 up the upper limit of boron content in TiB 2 (=31.10 wt-% B) C TiB2 low the lower limit of boron content in TiB 2 (=30.10 wt-% B) C TiB up the upper limit of boron content in TiB (=18.50 wt-% B) C TiB low the lower limit of boron content in TiB (=18.00 wt-% B) C ads the adsorbed boron concentration in the boride layer (wt-%B). C 0 the boron solubility in the substrate (≈0 wt-%B) u the position of the (TiB 2 /TiB) interface or the TiB 2 layer thickness (µm) v the position of the (TiB/Ti) interface or the total layer thickness (µm) l the layer thickness of TiB (µm) k 1 the parabolic growth constant at the (TiB 2 /TiB) interface k 2 the parabolic growth constant at the (TiB/Ti) interface D TiB2 B the diffusion coefficient of boron in TiB 2 (m 2 s −1 ) D TiB B the diffusion coefficient of boron in TiB (m 2 s −1 )

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Section: Resultsmentioning

confidence: 99%

A diffusion model for the titanium borides on pure titanium

Кеддам

Taktak

Taşgetiren

2016

Surface Engineering

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“…Although Ti alloy has high specific strength and high corrosion resistance, their wear resistance is not desirable . Surface modification techniques including physical deposition methods (such as ion implantation, laser cladding, physical vapor deposition, and plasma spray coating), thermochemical surface treatments (such as nitriding, carburization, oxygen diffusion hardening, and boriding), and surface severe plastic deformation (such as friction stir processing and surface mechanical attrition treatment) have been employed to improve the surface properties of Ti alloys. TiN and diamond‐like carbon (DLC) coatings are commonly used in both physical deposition methods and thermochemical surface treatments.…”

Section: Surface Modification Of Ti Alloys For Biomedical Applicationsmentioning

confidence: 99%

A Review on Biomedical Titanium Alloys: Recent Progress and Prospect

2019

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Compared with stainless steel and Co-Cr-based alloys, Ti and its alloys are widely used as biomedical implants due to many fascinating properties, such as superior mechanical properties, strong corrosion resistance, and excellent biocompatibility. After briefly introducing several most commonly used biomedical materials, this article reviews the recent development in Ti alloys and their biomedical applications, especially the low-modulus β-type Ti alloys and their design methods. This review also systemically investigates the recently attractive progress in preparation of biomedical Ti alloys, including additive manufacturing, porous powder metallurgy, and severe plastic deformation, applied in the manufacturing and the influenced microstructures and properties. Nevertheless, there are still some problems with the long-term performance of Ti alloys, and therefore several surface modification methods are reviewed to further improve their biological activity, wear resistance, and corrosion resistance. Finally, the biocompatibility of Ti and its alloys is concluded. Summarizing the findings from literature, future prediction is also conducted. Darmstadt. His current research interest is focusing on the metal additive manufacturing (e.g. selective laser melting, electron beam melting), titanium alloys and composites, and processing-microstructure-properties in high-performance materials.

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“…Vanadium carbide reinforced iron matrix surface composite shows excellent wear resistance and high temperature properties, which can be widely used in metallurgy, mining, power, machinery, and water conservancy [2]. The diffusion dynamics based on the Arrhenius equation of carbide coating [3], boride coating [4], and nitrogen coating [5] on the surface of steel or iron matrix have been reported elsewhere. S. Barzilai and N. Frage [3] have developed an effective method, which thin films of niobium (~8 μm) were deposited on an ATJ graphite substrate by radio-frequency magnetron sputtering at low temperatures (420±50 K) under argon pressure of 0.67 Pa.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and dynamics of two layers vanadium carbide reinforced iron matrix surface composite

et al. 2017

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Abstract. Vanadium carbide particulates-reinforced iron matrix composites were prepared by in situ solid-phase diffusion method with different heat treatment times (30, 60, 120 and 240 min) at 1223 K, 1273 K and 1323 K after high temperature treatment at 1373 K for 5 min. The surface vanadium carbide layers (V2C layer and V8C7 layer) were characterized by means of scanning electron microscopy and X-ray diffraction. The kinetics of vanadium carbide layers showed that a parabolic relationship between carbide layer thickness and treatment time, which indicating that the composite layer's growth is controlled by diffusion. The apparent activation energy of V2C layer and V8C7 layer were 47.27 kJ/mol and 32.26kJ/mol, respectively.

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Characteristics and growth kinetics of plasma paste borided Cp–Ti and Ti6Al4V alloy

Cited by 50 publications

References 32 publications

A diffusion model for the titanium borides on pure titanium

A diffusion model for the titanium borides on pure titanium

A Review on Biomedical Titanium Alloys: Recent Progress and Prospect

Fabrication and dynamics of two layers vanadium carbide reinforced iron matrix surface composite

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