Results 131 to 140 of about 472 (175)

Sintering of highly dispersed titanium diboride and composite titanium diboride-calcium hexaboride powders

Powder Metallurgy and Metal Ceramics, 1997
The sintering behavior in vacuum of ultrafine nonmilled titanium boride powder and a composite of the latter with CaB6 was investigated. It was shown that such titanium boride powders and TiB2−CaB6 composites poses better sinterability than conventional powders; the temperature of rapid densification was approximately 200°C lower.
T. I. Serebryakova, E. N. Martynenko
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Mechanosynthesis of Nanodispersed Titanium Diboride

Powder Metallurgy and Metal Ceramics, 2015
Structural and morphological changes of titanium during intensive milling of titanium and boron powder mixtures in an AIR-015M planetary-ball mill are investigated. It is shown that the structural transformations in titanium lead to the formation of cluster precipitates (like Guinier–Preston zones) of titanium and boron atoms that are regularly ...
M. P. Saviak, A. B. Mel’nik, Yu. M. Solonin, A. V. Kotko, I. I. Timofeeva, I. V. Uvarova   +5 more
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Microwave sintering of titanium diboride

Journal of Materials Science, 1991
Using a 2.45 GHz, 6 kW microwave furnace adapted for inert gas sintering, titanium diboride (TiB2) can be rapidly microwave-sintered to >90% of theoretical density with sintering temperatures of 1900 to 2100 °C and soak times of 30 min or less. Densification behaviour with low-level additives was evaluated; 3 wt% chromium diboride (CrB2) was an ...
C. E. Holcombe, N. L. Dykes
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Synthesis and consolidation of titanium diboride

International Journal of Refractory Metals and Hard Materials, 2007
Abstract Titanium diboride (TiB2) is one of the candidate materials for high temperature structural applications and also for control rod elements in high temperature nuclear reactors. This paper presents the experimental data on the synthesis, consolidation to dense pellets and property evaluation of TiB2 carried out in laboratory scale. TiB2 powder
C. Subramanian, T.S.R.Ch. Murthy, A.K. Suri   +2 more
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Vacuum sintering of titanium diboride

Soviet Powder Metallurgy and Metal Ceramics, 1970
The results obtained lead to the conclusion that, at low temperatures (up to 1100°C), the increase of contact surfaces between the titanium diboride particles is linked with surface diffusion processes. At temperatures in excess of 1800°C, the evaporation and condensation mechanism contributed appreciably toward mass transfer.
P. S. Kislyi, O. V. Zaverukha
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On the failure of shocked titanium diboride

Royal Society of London. Proceedings A. Mathematical, Physical and Engineering Sciences, 2002
The failure of brittle materials in uniaxial compressive shock loading has been the subject of extensive recent discussion. The physical interpretation of the yielding process in titanium diboride and its Hugoniot elastic limit remain poorly defined.
G, Gray III, Bourne, Neil
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Microstructural characterization of titanium diboride

Materials Characterization, 1993
A wide range of microstructural and microanalytical techniques has been used to follow the effects of heat treatment on a commercial sample of titanium diboride. The effects of the interplay of grain size with microchemical changes, the initial distribution of pores, and the microcracks that develop on heat treatment are demonstrated.
Kwang Bo Shim, Jerzy Kwiencinski, Mohan J. Edirisinghe, Brian Ralph   +3 more
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Pyrolytic Synthesis of Titanium Diboride

Journal of the American Ceramic Society, 1963
Titanium diboride was synthesized by the vaporphase reaction of the chlorides of titanium and boron on a heated substrate. Under certain described conditions, the resulting deposit was found to have a preferred atomic arrangement which could be described as alternating layers of titanium and boron atoms perpendicular to the plane of deposition.
R. E. GANNON, R. C. FOLWEILER, T. VASILOS   +2 more
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MORPHOLOGY OF CHEMICAL VAPOR DEPOSITED TITANIUM DIBORIDE

Journal of Crystal Growth, 1975
Titanium diboride has been chemical vapor deposited from TiCl4, BCl3, and H3 gases on a heated graphite substrate. The morphologies of the deposits were correlated with the deposition parameters of substrate temperature, total pressure, B: Ti atomic ratio, Cl: H atomic ratio, and total flow rate.
T.M. Besmann, K.E. Spear
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A mild solvothermal route to nanocrystalline titanium diboride

Journal of Alloys and Compounds, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Yunle Gu, Yitai Qian, Luyang Chen, Fu Zhou   +3 more
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