Heat treatment effect on the mechanical properties, roughness and bone ingrowth capacity of 3D printing porous titanium alloy

Li, Zuhao; Liu, Chang; Wang, Bingfeng; Wang, Chenyu; Wang, Zhonghan; Yang, Fan; Gao, Chaohua; Li, He; Qin, Yanguo

doi:10.1039/c7ra13313h

Cited by 44 publications

(23 citation statements)

References 41 publications

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“…Indeed, excepted a ¼ 08, our results (Figure 5) showed h app superior to 908 for all the other orientations in agreement with the presence of type I defects on the surface. These results agreed with different studies of the literature [41,42].…”

Section: Remarks On Surface Roughness Parameterssupporting

confidence: 93%

Topography and wettability characterization of surfaces manufactured by SLM and treated by chemical etching

Thenard

Catapano

Allena

et al. 2020

Mechanics of Advanced Materials and Structures

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Selective Laser Melting process represents an interesting opportunity in the biomedical field to fabricate customized implants. However, the surface roughness of components obtained through additive manufacturing is a major limitation and affects the surface wettability. In the present work, chemical etching is adopted to deal with such an issue. To do so, the effects of chemical etching parameters (such as immersion time and composition of the solution) on the surface roughness, weight loss and wettability is analyzed. Different samples (obtained through different printing orientations) are considered. The tests show that the roughness and the wetting of the surfaces are improved thanks to chemical etching. As a major result, the most influencing parameters on surface wetting are two: the roughness and the material properties (which vary with samples depth).

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Section: Remarks On Surface Roughness Parameterssupporting

confidence: 93%

Topography and wettability characterization of surfaces manufactured by SLM and treated by chemical etching

Thenard

Catapano

Allena

et al. 2020

Mechanics of Advanced Materials and Structures

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“…There has been plenty of research about 3D-printed Ti implants. Nonetheless, most of this research was focused on the mechanical properties instead of the surface structures of the implants [ 11 , 12 , 13 ]. However, the surface structures of implants are vital to regulate cell viability in the development of tissue engineering and regenerative medicine [ 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

In Situ Controlled Surface Microstructure of 3D Printed Ti Alloy to Promote Its Osteointegration

et al. 2019

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It is well known that three-dimensional (3D) printing is an emerging technology used to produce customized implants and surface characteristics of implants, strongly deciding their osseointegration ability. In this study, Ti alloy microspheres were printed under selected rational printing parameters in order to tailor the surface micro-characteristics of the printed implants during additive manufacturing by an in situ, controlled way. The laser path and hatching space were responsible for the appearance of the stripy structure (S), while the bulbous structure (B) and bulbous–stripy composite surface (BS) were determined by contour scanning. A nano-sized structure could be superposed by hydrothermal treatment. The cytocompatibility was evaluated by culturing Mouse calvaria-derived preosteoblastic cells (MC3T3-E1). The results showed that three typical microstructured surfaces, S, B, and BS, could be achieved by varying the 3D printing parameters. Moreover, the osteogenic differentiation potential of the S, B, and BS surfaces could be significantly enhanced, and the addition of nano-sized structures could be further improved. The BS surface with nano-sized structure demonstrated the optimum osteogenic differentiation potential. The present research demonstrated an in situ, controlled way to tailor and optimize the surface structures in micro-size during the 3D printing process for an implant with higher osseointegration ability.

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“…160,161 For example, in the case of the titanium alloy Ti-6Al-4V processed with SLM, a very brittle phase (i.e., a 0 ) is often formed, which reduces the fatigue life of the resulting material. 162 Heat treatments alone 76,158,[163][164][165][166][167][168][169][170] as well as in combination with high pressures (e.g., in hot isostatic pressing 157,162,171 ) and surface treatments 162 could be used to both reduce the level of the residual stresses and to improve the microstructural features of the materials processed with EBM and SLM.…”

Section: Additive Manufacturing Techniquesmentioning

confidence: 99%

Additively manufactured porous metallic biomaterials

Zadpoor

2019

J. Mater. Chem. B

164

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Heat treatment effect on the mechanical properties, roughness and bone ingrowth capacity of 3D printing porous titanium alloy

Abstract: The weak mechanical strength and biological inertia of Ti–6Al–4V porous titanium alloy limit its clinical application in the field of orthopedics.

Cited by 44 publications

References 41 publications

Topography and wettability characterization of surfaces manufactured by SLM and treated by chemical etching

Topography and wettability characterization of surfaces manufactured by SLM and treated by chemical etching

In Situ Controlled Surface Microstructure of 3D Printed Ti Alloy to Promote Its Osteointegration

Additively manufactured porous metallic biomaterials

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