Preparation and Electron-Beam Surface Modification of Novel TiNi Material for Medical Applications

Аникеев, С. Г.; Shabalina, Anastasiia V.; Kulinich, Sergei A.; Artyukhova, N. V.; Korsakova, Daria R.; Yakovlev, E. V.; Vlasov, V. A.; Kokorev, O. V.; Hodorenko, Valentina

doi:10.3390/app11104372

Cited by 6 publications

(10 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At the end of the M 2 plateau, the transition stops and the elastic deformation of martensite starts. However, by the end of this phase transition, similar to the stress decrease in section S, there is a decrease in stress K. According to Karaca et al [31], this decrease may be associated either with material softening as a result of the martensitic transformation R→M, or with the beginning of the reorientation of martensite in the structure of the material and the nucleation of favourably oriented martensite crystals [42][43][44]. This stress decay period is followed by a rise in the fracture curve caused by the elastic deformation of the martensite phase.…”

Section: Concentration Dependency Of the Martensitic Shear Stress In ...mentioning

confidence: 75%

The Effect of Cobalt on the Deformation Behaviour of a Porous TiNi-Based Alloy Obtained by Sintering

et al. 2021

View full text Add to dashboard Cite

This research investigates the effect of cobalt on the deformation behaviour of a porous TiNi-based alloy that was obtained by sintering. Porous TiNi-based alloys with cobalt additives, accounting for 0–2 at. % and with a pitch of 0.5, were obtained. The structural-phase state of the porous material was researched by X-ray structural analysis. The effect of different amounts of Co (used as an alloying additive) on the deformation behaviour was investigated by tensile to fracture. The fractograms of fracture of the experimental samples were analysed using scanning electron microscopy. For the first time, the present research shows a diagram of the deformation of a porous TiNi-based alloy that was obtained by sintering under tensile. The stages of deformation were described according to the physical nature of the processes taking place. The effect of the cobalt-alloying additive on the change in the critical stress of martensitic shear was investigated. It was found that the behaviour of the concentration dependency of stress at concentrations under 1.5 at. % Co was determined by an increase in the stress in the TiNi solid solution. This phenomenon is attributed to the arrangement of Co atoms on the Ti sublattice, as well as an increase in the fraction of the B19′ phase in the matrix. The steep rise of the developed forces on the concentration dependency of the martensitic shear stress at 2 at. % Co is presumably attributed to the precipitation hardening of austenite due to the precipitation of finely dispersed coherent Ti3Ni4 phase following the decrease of fraction of martensite. An analysis of fractograms showed that as more cobalt was added, areas of fracture with traces of martensite plates of the B19′ phase started to prevail. At 2 at. % Co these plates fill almost the entire area of the fracture. The research findings presented in this work are of great importance, since they can be used to achieve the set of physical and mechanical properties required for the development of biocompatible materials for implantology.

show abstract

Section: Concentration Dependency Of the Martensitic Shear Stress In ...mentioning

confidence: 75%

The Effect of Cobalt on the Deformation Behaviour of a Porous TiNi-Based Alloy Obtained by Sintering

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The beam diameter was up to 80 mm, with energy density being around 3 J/cm 2 for SP-20 sample, and 6 J/cm 2 for SP-30 sample. In the present work, in addition to the series of small-pored (SP) materials, we also prepared their large-pored (LP) counterparts, the latter materials being obtained under same conditions but with the use of larger TiNi powders, as was previously reported elsewhere [36] (Table 1).…”

Section: Materials Preparationmentioning

confidence: 99%

“…In the present work, in addition to corrosion performance of newly-developed materials (materials of the SP series), for comparison we also tested corrosion performance of their counterparts prepared with larger TiNi particles (materials of the LP series) whose preparation was reported elsewhere [36]. This allowed us to reveal the effect of particle size of TiNi powders on corrosion resistance of potential rib implants manufactured on their basis (materials of series LP and SP).…”

Section: Corrosion Study Of the Materialsmentioning

confidence: 99%

“…To address the above-mentioned challenges and prepare TiNi composite materials with a thin porous layer on a monolithic substrate, yet with high adhesion between them, earlier we proposed to sinter properly selected TiNi powders on monolithic plates with a subsequent modification of the 3 of 19 formed composite structure [26,27,32]. After surface modification with a low-energy high-current pulsed electron beam (HCPEB), the fabricated materials were shown to have a relatively thin TiNibased porous layer on monolith TiNi plates, while the porosity and adhesion of the porous layer could be tuned through processing parameters [33][34][35][36]. The as-fabricated materials can meet the requirements for rib endoprostheses.…”

Section: Introductionmentioning

confidence: 99%

“…In the previous work, we demonstrated that sintering of TiNi powder with sizes 100-200 µm followed by HCPEB treatment permitted to produce composite TiNi surfaces with roughness parameters Ra and Rz within the range of 60-80 and 280-360 µm, respectively [33][34][35][36]. For such relatively large powder particles, the sintering mode used was limited to the sintering temperature of 1200°С.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Combined Porous-Monolith TiNi Materials Surface-Modified with Electron Beam for New-Generation Rib Endoprostheses

Shabalina¹,

Аникеев²,

Kulinich³

et al. 2023

Preprint

View full text Add to dashboard Cite

TiNi alloys are very widely used materials for implant fabrication. When applied as rib replacement, they are required to be manufactured as combined porous-monolithic structure, ideally with a thin porous part well-adhered to its monolithic substrate. Additionally, good biocompatibility, high corrosion resistance and mechanical durability are also highly demanded. So far, all these parameters were not achieved in one material, which is why active search in the field is still underway. In the present work, we prepared new porous-monolithic TiNi materials by sintering a TiNi powder (0-100 µm) on monolithic TiNi plates followed by surface modification with high-current pulsed electron beam. The obtained materials were evaluated by a set of surface and phase analysis methods, after which their corrosion resistance and biocompatibility (hemolysis, cytotoxicity, and cell viability) were evaluated. Finally, cell growth tests were conducted. In comparison with flat TiNi monolith, the newly-developed materials were found to have better corrosion resistance, also demonstrating good biocompatibility and potential for cell growth on their surface. Thus, the newly-developed porous-on-monolith TiNi materials with different surface porosity and morphology show promise as potential new-generation implants for rib endoprostheses.

show abstract

Characterization of corrosion properties, structure and chemistry of titanium-implanted TiNi shape memory alloy

Semin,

D'yachenko,

Erkovich

et al. 2023

Materials Characterization

View full text Add to dashboard Cite

Preparation and Electron-Beam Surface Modification of Novel TiNi Material for Medical Applications

Cited by 6 publications

References 38 publications

The Effect of Cobalt on the Deformation Behaviour of a Porous TiNi-Based Alloy Obtained by Sintering

The Effect of Cobalt on the Deformation Behaviour of a Porous TiNi-Based Alloy Obtained by Sintering

Combined Porous-Monolith TiNi Materials Surface-Modified with Electron Beam for New-Generation Rib Endoprostheses

Characterization of corrosion properties, structure and chemistry of titanium-implanted TiNi shape memory alloy

Contact Info

Product

Resources

About