Results 141 to 150 of about 1,612 (168)
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2011
This diploma thesis is divided into two parts, the theoretical and the experimental. Initially, in the theoretical part, a brief introduction to the material TiB2 is made. Then, the basic structural characteristics are presented briefly along with the physical and mechanical properties, which are exploited in numerous applications.
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This diploma thesis is divided into two parts, the theoretical and the experimental. Initially, in the theoretical part, a brief introduction to the material TiB2 is made. Then, the basic structural characteristics are presented briefly along with the physical and mechanical properties, which are exploited in numerous applications.
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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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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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Materials Science and Engineering: A, 1990
Abstract The addition of 20 vol.% titanium diboride in particulate form (1–3 μm) to nickel aluminide (TiB 2 NiAl) results in a twofold increase in the high temperature strength of NiAl. There are at least two theories that have been proposed to account for the high temperature strength of discontinuous reinforced metal matrix composites.
L. Wang, R.J. Arsenault
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Abstract The addition of 20 vol.% titanium diboride in particulate form (1–3 μm) to nickel aluminide (TiB 2 NiAl) results in a twofold increase in the high temperature strength of NiAl. There are at least two theories that have been proposed to account for the high temperature strength of discontinuous reinforced metal matrix composites.
L. Wang, R.J. Arsenault
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Synthesis and Properties of TiB2/TiN and TiB2/B4C Films
2004The TiB2/TiN and TiB2/B4C films with a thickness of approximately 1–2 μm were prepared by magnetron non-reactive d.c./r.f. sputtering on Si and stainless steel substrates. Sintered and hot-pressed targets of the individual compounds (TiB2, TiN and B4C) and their mixtures (25/75, 50/50 and 75/25 in weight percents) were used in the film preparation ...
R.A. Andrievski, G.V. Kalinnikov
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Influence of TiB2 content on microstructure and hardness of TiB2–B4C composite
Powder Technology, 2005Abstract In this study a composite ceramic powder mixture using fine powders of titanium diboride (TiB2) and boron carbide (B4C) was consolidated to theoretical density using the technique of plasma pressure compaction. Achieving rapid consolidation of the composite powder mixture is an essential requirement for achieving microstructural control and ...
T.S. Srivatsan +4 more
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Oxidation of monolithic TiB2 and TiB2–20wt.% MoSi2 composite at 850°C
Journal of the European Ceramic Society, 2006Abstract The isothermal oxidation behavior of monolithic TiB 2 and TiB 2 –20 wt.% MoSi 2 composite was evaluated at 850 °C in air. The monolithic TiB 2 exhibited continuous weight gain with increasing time. The TiB 2 –MoSi 2 composite showed continuous weight gain till 16 h and afterwards the weight gain decreased markedly.
T.S.R.Ch. Murthy +4 more
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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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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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Oxidation Behaviour of TiB2, Al2O3-TiB2 and Si3N4-TiB2 Ceramic Systems
1992In view of the susceptibility of TiB2 to oxidation, the thermal stability of monolithic TiB2 and of Al2O3-30 vol% TiB2 and Si3N4-20 vol% TiB2 composites was investigated. The temperature at which TiB2 ceramic starts to oxidize is about 400°C, oxidation kinetics being controlled by diffusion up toT?900°C and in the first stage of the oxidation at 1000°C
V BIASINI, A TAMPIERI, E LANDI
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