Oxidation behavior of amorphous boron carbide–silicon carbide nano-multilayer thin films

Bae, Kwang‐Hee; Chae, Ki‐Woong; Park, J.-K.; Lee, W.-S.; Baik, Young‐Joon

doi:10.1016/j.surfcoat.2015.06.053

Cited by 11 publications

(4 citation statements)

References 18 publications

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“…Coatings based on molybdenum disilicide, which is characterized by a high melting point (2030 • C), high thermal conductivity (51.0 W•m −1 •K −1 ), low coefficient of thermal expansion (7.0 × 10 −6 K −1 ) [3], and excellent oxidation and corrosion resistance [3][4][5], are promising from a practical standpoint. The high-temperature oxidation resistance of protective coatings can be enhanced by increasing the concentration of silicon [6][7][8], whose atoms facilitate the formation of a diffusion-barrier layer made of borosilicate glass when heated in air [9]. Boron doping of MoSi 2 increases the high-temperature oxidation resistance by reducing the viscosity of borosilicate glass and by healing surface defects.…”

Section: Introductionmentioning

confidence: 99%

Frequency Effect on the Structure and Properties of Mo-Zr-Si-B Coatings Deposited by HIPIMS Using a Composite SHS Target

Kiryukhantsev-Korneev

Сытченко

Логинов

et al. 2022

Coatings

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Mo-Zr-Si-B coatings were deposited by high-power impulse magnetron sputtering at a pulse frequency of 10, 50, and 200 Hz. The coating structure was studied by scanning electron microscopy, energy-dispersive spectroscopy, glow-discharge optical-emission spectroscopy, transmission electron microscopy, and X-ray diffraction. The mechanical characteristics, adhesive strength, coefficient of friction, wear resistance, resistance to cyclic-dynamic-impact loading, high-temperature oxidation resistance, and thermal stability of the coatings were determined. The coatings, obtained at 10 and 50 Hz, had an amorphous structure. Increasing the frequency to 200 Hz led to the formation of the h-MoSi2 phase. As the pulse frequency increased from 10 to 50 and 200 Hz, the deposition rate rose by 2.3 and 9.0 times, while hardness increased by 1.9 and 2.9 times, respectively. The Mo-Zr-Si-B coating deposited at 50 Hz was characterized by better wear resistance, resistance to cyclic-dynamic-impact loading, and oxidation resistance at 1500 °C. Thermal stability tests of the coating samples heated in the transmission electron microscope column showed that the coating deposited at 50 Hz remained amorphous in the temperature range of 20–1000 °C. Long-term annealing in a vacuum furnace at 1000 °C caused partial recrystallization and the formation of a nanocomposite structure, as well as an increased hardness from 15 to 37 GPa and an increased Young’s modulus from 250 to 380 GPa, compared to those of the as-deposited coatings.

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Section: Introductionmentioning

confidence: 99%

Frequency Effect on the Structure and Properties of Mo-Zr-Si-B Coatings Deposited by HIPIMS Using a Composite SHS Target

Kiryukhantsev-Korneev

Сытченко

Логинов

et al. 2022

Coatings

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“…Zirconium diboride is promising in multipurpose protective coatings for high-temperature units in aviation and space technology, the power engineering industry, metal-formed tools, cutting and machining tools, molds, etc., due to its extremely high melting temperature (3245 °C), high thermal conductivity (57.9 Wt·m −1 ·K −1 ), low coefficient of thermal expansion (5.9 × 10 −6 °C −1 ) [ 1 ], high oxidation resistance (up to 2000 °C) [ 2 ], high hardness (22 GPa), and wear resistance [ 3 ]. The oxidation resistance of protective coatings can be enhanced via alloying by Si [ 4 , 5 , 6 ] or the introduction of silicon-containing phases, such as SiC, SiBC, and TaSi 2 [ 7 , 8 , 9 ]. Silicon improves the oxidation resistance due to the formation of borosilicate glass on the surface of the material upon oxidation.…”

Section: Introductionmentioning

confidence: 99%

Structure and Properties of Zr-Mo-Si-B-(N) Hard Coatings Obtained by d.c. Magnetron Sputtering of ZrB2-MoSi2 Target

Kiryukhantsev-Korneev

Сытченко

Pogozhev

et al. 2021

Materials

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Coatings in a Zr-Mo-Si-B-N system were deposited by the magnetron sputtering of ZrB2-MoSi2 targets in argon and nitrogen. The structure of the coatings was investigated using scanning electron microscopy, X-ray diffraction, energy-dispersive spectroscopy, and glow-discharge optical emission spectroscopy. Mechanical and tribological properties were measured using nanoindentation and pin-on-disc testing. Oxidation resistance and oxidation kinetics were estimated via annealing in air at 1000–1500 °C and precision weight measurements. We found that the coatings deposited in Ar demonstrate a superior combination of properties, including hardness of 36 GPa, elastic recovery of 84%, a friction coefficient of 0.6, and oxidation resistance at temperatures up to 1200 °C. High oxidation resistance is realized due to the formation of the protective (SiO2 + ZrO2)/SiO2 oxide layer, which inhibits the diffusion of oxygen into the coating.

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“…This is because the temperature is monitored using a thermostat in most radiator cooling systems [4]. This thermostat will remain closed until the temperature of the coolant reaches a certain point, under which the coolant is maintained within the engine [5,6].…”

Section: Introductionmentioning

confidence: 99%

Thermal Analysis and Optimization of Nano Coated Radiator Tubes Using Computational Fluid Dynamics and Taguchi Method

Pungaiah

Kailasanathan²

2020

Coatings

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Automotive heat removal levels are of high importance for maximizing fuel consumption. Current radiator designs are constrained by air-side impedance, and a large front field must meet the cooling requirements. The enormous demand for powerful engines in smaller hood areas has caused a lack of heat dissipation in the vehicle radiators. As a prediction, exceptional radiators are modest enough to understand coolness and demonstrate great sensitivity to cooling capacity. The working parameters of the nano-coated tubes are studied using Computational Fluid Dynamics (CFD) and Taguchi methods in this article. The CFD and Taguchi methods are used for the design of experiments to analyse the impact of nano-coated radiator parameters and the parameters having a significant impact on the efficiency of the radiator. The CFD and Taguchi methodology studies show that all of the above-mentioned parameters contribute equally to the rate of heat transfer, effectiveness, and overall heat transfer coefficient of the nanocoated radiator tubes. Experimental findings are examined to assess the adequacy of the proposed method. In this study, the coolant fluid was transmitted at three different mass flow rates, at three different coating thicknesses, and coated on the top surface of the radiator tubes. Thermal analysis is performed for three temperatures as heat input conditioning for CFD. The most important parameter for nanocoated radiator tubes is the orthogonal array, followed by the Signal-to-Noise Ratio (SNRA) and the variance analysis (ANOVA). A proper orthogonal array is then selected and tests are carried out. The findings of ANOVA showed 95% confidence and were confirmed in the most significant parameters. The optimal values of the parameters are obtained with the help of the graphs.

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Oxidation behavior of amorphous boron carbide–silicon carbide nano-multilayer thin films

Cited by 11 publications

References 18 publications

Frequency Effect on the Structure and Properties of Mo-Zr-Si-B Coatings Deposited by HIPIMS Using a Composite SHS Target

Frequency Effect on the Structure and Properties of Mo-Zr-Si-B Coatings Deposited by HIPIMS Using a Composite SHS Target

Structure and Properties of Zr-Mo-Si-B-(N) Hard Coatings Obtained by d.c. Magnetron Sputtering of ZrB2-MoSi2 Target

Thermal Analysis and Optimization of Nano Coated Radiator Tubes Using Computational Fluid Dynamics and Taguchi Method

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