Laser processing of in situ synthesized TiB–TiN-reinforced Ti6Al4V alloy coatings

Das, Mitun; Balla, Vamsi Krishna; Basu, Debabrata; Manna, I.; Kumar, T.S. Sampath; Bandyopadhyay, Amit

doi:10.1016/j.scriptamat.2012.01.010

Cited by 100 publications

(48 citation statements)

References 24 publications

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“…A variety of LMD machines and laser systems are being used for the fabrication of metals and alloys including Ti-6Al-4V, such as LEMS TM Nd:YAG, Trumpf HLD 3504 Yb:YAG and IPG with Yb fibre laser [67][68][69][70][71][72][73][74][75][76][77][78]. Figure 4 and Table 5 present the general working principle, working conditions and key machine/processing parameters.…”

Section: Laser Metal Deposition (Lmd)mentioning

confidence: 99%

An Overview of Densification, Microstructure and Mechanical Property of Additively Manufactured Ti-6Al-4V — Comparison among Selective Laser Melting, Electron Beam Melting, Laser Metal Deposition and Selective Laser Sintering, and with Conventional Powder

Yan¹,

Yu²

2015

Sintering Techniques of Materials

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Section: Laser Metal Deposition (Lmd)mentioning

confidence: 99%

An Overview of Densification, Microstructure and Mechanical Property of Additively Manufactured Ti-6Al-4V — Comparison among Selective Laser Melting, Electron Beam Melting, Laser Metal Deposition and Selective Laser Sintering, and with Conventional Powder

Yan¹,

Yu²

2015

Sintering Techniques of Materials

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“…and borides (TiB) [18] as well as TiN mixtures with different alloys (NiTi, FeNi) [9] are extensively considered in the literature as Ti coatings, as monolayer or even in multilayer systems (i.e. TiN/AlN, TiN/TiCN) [5,19,20], to improve the surface toughness and corrosion properties. Results show that surface texturing of the Ti-based substrates plays an important role to prepare anti-wear coating with good adhesion, high toughness, hardness or low coefficient of friction.…”

Section: Introductionmentioning

confidence: 99%

Protective nature of nano-TiN coatings shaped by EPD on Ti substrates

Mendoza

González

Gordo

et al. 2018

Journal of the European Ceramic Society

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A B S T R A C TThe hardness and corrosion resistance of TiN coatings, processed by Electrophoretic Deposition (EPD) to cover polished and unpolished Ti substrates, have been evaluated. A deposition time of 5 min has been enough to obtain a cohesive layer of 7-8 μm in thickness. The coatings were thermally treated in vacuum atmosphere at 1200°C for 1 h with heating and cooling rates of 5°C min The nanohardness values of the polished samples have been increased from 2.8-4.8 GPa up to 6.5-8.5 GPa. Besides, the corrosion current density has been reduced more than one order of magnitude obtaining a protective efficiency of 82%. These values have been compared with other works in literature where authors used complex and costly processing techniques, demonstrating the strong impact of the colloidal processing over the specific properties of the material.

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“…1 confirms that the interface between HAP coating and the 254SS substrate is sound and diffused, which are the characteristics of the laser deposited coatings. 29,30,[33][34][35] Contrarily, HAP coatings deposited by other methods such as plasma spraying have a sharp interface, which is unacceptable for their long-term success. 29 A typical SEM microstructure image of the HAPcoated 254SS sample is shown in Fig.…”

Section: Surface Morphology Characterizationmentioning

confidence: 99%

Hydroxyapatite Coatings on High Nitrogen Stainless Steel by Laser Rapid Manufacturing

Das

Shukla

2017

JOM

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In this research, the laser rapid manufacturing (LRM) additive manufacturing process was used to deposit multifunctional hydroxyapatite (HAP) coatings on high nitrogen stainless steel. LRM overcomes the limitations of conventional coating processes by producing coatings with metallurgical bond, osseointegration, and infection inhibition properties. The microstructure, microhardness, antibacterial efficacy, and bioactivity of the coatings were investigated. The microstructure studies established that the coatings consist of austenite dendrites with HAP and some reaction products primarily occurring in the inter-dendritic regions. A Vickers microhardness test confirmed the hardness values of deposited HAP coatings to be higher than those of the bare 254SS samples, while a fluorescence activated cell sorting test confirmed their superior antibacterial properties as compared with pristine samples. The coated samples immersed in simulated body fluid showed rapid apatite forming ability. The results obtained in this research signify the potential application of the LRM process in synthesizing multifunctional orthopaedic coatings.

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Laser processing of in situ synthesized TiB–TiN-reinforced Ti6Al4V alloy coatings

Cited by 100 publications

References 24 publications

An Overview of Densification, Microstructure and Mechanical Property of Additively Manufactured Ti-6Al-4V — Comparison among Selective Laser Melting, Electron Beam Melting, Laser Metal Deposition and Selective Laser Sintering, and with Conventional Powder

An Overview of Densification, Microstructure and Mechanical Property of Additively Manufactured Ti-6Al-4V — Comparison among Selective Laser Melting, Electron Beam Melting, Laser Metal Deposition and Selective Laser Sintering, and with Conventional Powder

Protective nature of nano-TiN coatings shaped by EPD on Ti substrates

Hydroxyapatite Coatings on High Nitrogen Stainless Steel by Laser Rapid Manufacturing

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