Results 191 to 200 of about 5,591 (229)
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Microstructure of spark plasma sintered TiB2 and TiB2–AlN ceramics
2019In this research study, the effects of aluminum nitride (AlN) additive on the densification behavior and microstructure development of titanium diboride (TiB2) based ceramic matrix composite were investigated. In this way, a monolithic TiB2 ceramic and a TiB2–5 wt% AlN ultrahigh temperature ceramic composite were fabricated by spark plasma sintering ...
Ahmadi, Zohre +3 more
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Modification mechanism of primary silicon by TiB2 particles in a TiB2/ZL109 composite
Journal of Materials Science, 2014Modification of primary silicon was observed in a hypereutectic Al–Si composite reinforced with TiB2 particles. The primary silicon was found to be refined significantly by TiB2 particles, with the size being reduced from about 25 to 5 μm. Close observation of the microstructure indicates that the TiB2 particles engulfed by the primary silicon acts as ...
Jing Sun +4 more
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Fabrication of TiB2 and TiB2–TiC particulates reinforced magnesium matrix composites
Materials Science and Engineering: A, 2004Abstract A TiB 2 particulate reinforced magnesium matrix composite (MMCs) was fabricated by adding a TiB 2 –Al master alloy processed via self-propagating high-temperature synthesis (SHS) reaction in Al–Ti–B system into molten magnesium and using the stir casting technique.
H.Y. Wang +5 more
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Wear, 1981
Abstract The wear properties of elctrodeposited coatings of TiB 2 in low speed (5 cm s −1 ) and high speed (30 m s −1 ) sliding applications in contact with hardened steel are reported. An improved method for the preparation of these coatings is described.
J.A. Kirk, D.R. Flinn, M.J. Lynch
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Abstract The wear properties of elctrodeposited coatings of TiB 2 in low speed (5 cm s −1 ) and high speed (30 m s −1 ) sliding applications in contact with hardened steel are reported. An improved method for the preparation of these coatings is described.
J.A. Kirk, D.R. Flinn, M.J. Lynch
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The transition layer in TiB2-GaAs and Au-TiB2-GaAs Schottky contacts
Semiconductors, 2001Spectral characteristics of the transverse bulk photovoltage in the TiB2-GaAs and Au-TiB2-GaAs Schottky contacts for starting samples (unannealed) and samples annealed at 400, 600, and 800°C were measured. The concentration of the dopant for the n-GaAs substrate was 1016 cm−3. It was found that the transition layer is formed in the TiB2-GaAs structures
E. F. Venger +5 more
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2008
It was described in a previous paper that fully dense TiB2-20 wt pct sintered bodies were fabricated by glass encapsulation HIP, and their three-point bending strength was as high as 1200 MPa. In this material, grain growth occurred during sintering; the grain sizes of TiB2 and ZrO2 in a sintered (HIP'd) body were 4-6 microns and 2-5 microns ...
S. Torizuka, J. Habada, H. Nishio
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It was described in a previous paper that fully dense TiB2-20 wt pct sintered bodies were fabricated by glass encapsulation HIP, and their three-point bending strength was as high as 1200 MPa. In this material, grain growth occurred during sintering; the grain sizes of TiB2 and ZrO2 in a sintered (HIP'd) body were 4-6 microns and 2-5 microns ...
S. Torizuka, J. Habada, H. Nishio
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Soviet Powder Metallurgy and Metal Ceramics, 1982
The constitution diagram constructed for the quasibinary TiB2-Re system is of the eutectic type, with Teut = 2500 ± 50°K. The eutectic composition is 22 wt.% TiB2 + 78 wt.% Re. The system is characterized by small intersolubility of its components. The eutectic temperature recorded is the highest of any MeIVB2-Re system.
S. S. Ordan'yan +2 more
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The constitution diagram constructed for the quasibinary TiB2-Re system is of the eutectic type, with Teut = 2500 ± 50°K. The eutectic composition is 22 wt.% TiB2 + 78 wt.% Re. The system is characterized by small intersolubility of its components. The eutectic temperature recorded is the highest of any MeIVB2-Re system.
S. S. Ordan'yan +2 more
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Effect of TiB2 Content on Wear Resistance of TiB2/7055 Composite Materials
2018TiB2/7055 composites with volume fractions of 0, 5.17 and 18.23% were prepared by two step method. Firstly, the Al/TiB2 master alloy was prepared by Melt Self-propagating High-temperature Synthesis method. Then, TiB2/7055 composite was prepared by adjusting the alloy elements with using this master alloy as the matrix.
Haijing Wang +7 more
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Ceramics International, 2019
Abstract TiB2–25 vol% (Fe-Ni) and TiB2–30 vol% (Fe-Ni) composites with different TiB2 particle size were fabricated by vacuum pressureless sintering at 1700 °C for 1 h. The influences of TiB2 particle size on the microstructure and mechanical properties was studied in detail.
Ning Wu +5 more
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Abstract TiB2–25 vol% (Fe-Ni) and TiB2–30 vol% (Fe-Ni) composites with different TiB2 particle size were fabricated by vacuum pressureless sintering at 1700 °C for 1 h. The influences of TiB2 particle size on the microstructure and mechanical properties was studied in detail.
Ning Wu +5 more
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Effect of sintering temperature and TiB2 content on the grain size of B4C-TiB2 composites
Materials Today Communications, 2020Abstract Boron carbide (B4C) is a ceramic with great properties such as low density, the third hardness after diamond and cubic BN. However, it is a limited use cause of its poor sinterability and low fracture toughness. Titanium diboride (TiB2) has been used as an ideal additive to get B4C ceramics with good properties.
Yingying Liu +5 more
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