Chemical Structure and Functional Properties  of Amorphous Boron Carbonitride Films

Sulyaeva, V. S.; Gatapova, Elizaveta Ya.; Kozhevnikov, Alexander K.; Rogilo, D. I.; Saraev, A. A.; Yushina, I. V.; Khomyakov, M. N.; Shapovalova, A. A.; Shayapov, V. R.; Bhaskar, Nitu; Tu, Rong; Косинова, М. Л.

doi:10.1134/s0022476621080187

Cited by 3 publications

(5 citation statements)

References 57 publications

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“…As is known, oxygen-containing groups can contribute to a decrease in the contact angles. The obtained values of the water contact angles are consistent with the literature data for BC x N y films deposited by magnetron sputtering where CA = 50-77 • [95] and 20.7-54.0 • [96].…”

Section: Wettabilitysupporting

confidence: 89%

Section: Mechanical Propertiesmentioning

confidence: 90%

“…The magnetron sputtered BCxNy films had values of Lc2 equal to 18-30 mN depending on the films' composition [102]. In another study, the values of Lc1 = 32 mN and Lc2 = 25 mN were obtained for the magnetron sputtered BCx-like film; and critical loads for BCxNy films led in the intervals of Lc1 = 12-57 mN and Lc2 = 8-41 mN [96]. The values of H and E of PECVD films deposited at Tdep = 373-523 K are significantly smaller than for LPCVD films and equal to 0.76-1.40 GPa and 25-26 GPa, respectively (Figure 14 and Table 8).…”

Section: Mechanical Propertiesmentioning

confidence: 90%

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Boron Carbonitride Films with Tunable Composition: LPCVD and PECVD Synthesis Using Trimethylamine Borane and Nitrogen Mixture and Characterization

et al. 2023

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This study reports the chemical vapor deposition of amorphous boron carbonitride films on Si(100) and SiO2 substrates using a trimethylamine borane and nitrogen mixture. BCxNy films with different compositions were produced via variations in substrate temperature and type of gas-phase activation. The low-pressure chemical vapor deposition (LPCVD) and plasma-enhanced chemical vapor deposition (PECVD) methods were used. The “elemental composition—chemical bonding state—properties” relationship of synthesized BCxNy was systematically studied. The hydrophilicity, mechanical, and optical properties of the films are discussed in detail. The composition of films deposited by the LPCVD method at temperatures ranging from 673 to 973 K was close to that of boron carbide with a low nitrogen content (BCxNy). The refractive index of these films changed in the range from 2.43 to 2.56 and increased with temperature. The transparency of these films achieved 85%. LPCVD films were hydrophilic and the water contact angles varied between 53 and 63°; the surface free energy was 42–48 mN/m. The microhardness, Young’s modulus and elastic recovery of LPCVD films ranged within 24–28 GPa, 220–247 GPa, and 70–74%, respectively. The structure of the PECVD films was close to that of hexagonal boron nitride, and their composition can be described by the BCxNyOz:H formula. In case of the PECVD process, the smooth films were only produced at low deposition temperatures (373–523 K). The refractive index of these films ranged from 1.51 to 1.67. The transparency of these films achieved 95%; the optical band gap was evaluated as 4.92–5.28 eV. Unlike LPCVD films, they were very soft, and their microhardness, Young’s modulus and elastic recovery were 0.8–1.4 GPa, 25–26 GPa, and 19–28%, respectively. A set of optimized process parameters to fabricate LPCVD BCxNy films with improved mechanical and PECVD films with high transparency is suggested.

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Section: Wettabilitysupporting

confidence: 89%

Section: Mechanical Propertiesmentioning

confidence: 90%

Section: Mechanical Propertiesmentioning

confidence: 90%

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Boron Carbonitride Films with Tunable Composition: LPCVD and PECVD Synthesis Using Trimethylamine Borane and Nitrogen Mixture and Characterization

et al. 2023

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“…The B 1s spectra of the SiBCNO-0 sample revealed the presence of distinct bonding states, namely, boron-rich BC x , B–Si, carbon-rich BC x , B–N, and B–(Si, C, N) 3– x O x , with corresponding binding energies of 188.0, 188.3, 189.9, 191.0, and 192.0 eV . With an increase in nitrogen content in the coatings (SiBCNO-15 and SiBCNO-30 samples), there is a notable alteration in the chemical bonding structure.…”

Section: Resultsmentioning

confidence: 99%

“…These states include Si−C, Si−N, Si−B, and Si−(C, B, N) 4−x O x bindings located at 101.0, 20 101.8, 21 101.9, 22 The B 1s spectra of the SiBCNO-0 sample revealed the presence of distinct bonding states, namely, boron-rich BC x , B−Si, carbon-rich BC x , B−N, and B−(Si, C, N) 3−x O x , with corresponding binding energies of 188.0, 25 188.3, 22 189.9, 25 191.0, 26 and 192.0 eV. 27 With an increase in nitrogen content in the coatings (SiBCNO-15 and SiBCNO-30 samples), there is a notable alteration in the chemical bonding structure. Specifically, the intensity of the carbon-rich BC x component decreases while the intensity of the B−N component increases.…”

Section: Physicochemical Characterization Of Asmentioning

confidence: 98%

Hemocompatibility and Preangiogenic Attributes of SiB_xC_yN_zO_m Coatings for Biomedical Applications

Valoor,

Sulyaeva,

Lakshmiramanan

et al. 2024

ACS Appl. Mater. Interfaces

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In current clinical practices related to orthopedics, dental, and cardiovascular surgeries, a number of biomaterial coatings, such as hydroxyapatite (HAp), diamond-like carbon (DLC), have been used in combination with metallic substrates (stainless steel, Ti6Al4V alloy, etc.). Although SiBCN coatings are widely explored in material science for diverse applications, their potential remains largely unexplored for biomedical applications. With this motivation, the present work reports the development of SiB x C y N z O m coatings on a Ti6Al4V substrate, employing a reactive radiofrequency (RF) magnetron sputtering technique. Three different coating compositions (Si 0.27 B 0.10 C 0.31 N 0.07 O 0.24 , Si 0.23 B 0.06 C 0.21 N 0.22 O 0.27 , and Si 0.20 B 0.05 C 0.19 N 0.20 O 0.35 ) were obtained using a Si 2 BC 2 N target and varying nitrogen flow rates. The hydrophilic properties of the as-synthesized coatings were rationalized in terms of an increase in the number of oxygen-containing functional groups (OH and NO) on the surface, as probed using XPS and FTIR analyses. Furthermore, the cellular monoculture of SVEC4−10 endothelial cells and L929 fibroblasts established good cytocompatibility. More importantly, the coculture system of SVEC4−10 and L929, in the absence of growth factors, demonstrated clear cellular phenotypical changes, with extensive sprouting leading to tube-like morphologies on the coating surfaces, when stimulated using a customized cell stimulator (StimuCell) with 1.15 V/cm direct current (DC) electric field strength for 1 h. In addition, the hemocompatibility assessment using human blood samples revealed clinically acceptable hemolysis, less erythrocyte adhesion, shorter plasma recalcification, and reduced risk for thrombosis on the SiB x C y N z O m coatings, when compared to uncoated Ti6Al4V. Taken together, the present study unambiguously establishes excellent cytocompatibility, hemocompatibility, and defines the preangiogenic properties of SiB x C y N z O m bioceramic coatings for potential biomedical applications.

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On the origin of better hemocompatibility of the BCxNyOz coatings

Bhaskar

Sulyaeva

Gatapova

et al. 2022

Applied Surface Science

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Chemical Structure and Functional Properties of Amorphous Boron Carbonitride Films

Cited by 3 publications

References 57 publications

Boron Carbonitride Films with Tunable Composition: LPCVD and PECVD Synthesis Using Trimethylamine Borane and Nitrogen Mixture and Characterization

Boron Carbonitride Films with Tunable Composition: LPCVD and PECVD Synthesis Using Trimethylamine Borane and Nitrogen Mixture and Characterization

Hemocompatibility and Preangiogenic Attributes of SiB_xC_yN_zO_m Coatings for Biomedical Applications

On the origin of better hemocompatibility of the BCxNyOz coatings

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Chemical Structure and Functional Properties of Amorphous Boron Carbonitride Films

Cited by 3 publications

References 57 publications

Boron Carbonitride Films with Tunable Composition: LPCVD and PECVD Synthesis Using Trimethylamine Borane and Nitrogen Mixture and Characterization

Boron Carbonitride Films with Tunable Composition: LPCVD and PECVD Synthesis Using Trimethylamine Borane and Nitrogen Mixture and Characterization

Hemocompatibility and Preangiogenic Attributes of SiBxCyNzOm Coatings for Biomedical Applications

On the origin of better hemocompatibility of the BCxNyOz coatings

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Hemocompatibility and Preangiogenic Attributes of SiB_xC_yN_zO_m Coatings for Biomedical Applications