Filters
Results 1 - 10 of 1322
Results 1 - 10 of 1322.
Search took: 0.021 seconds
Sort by: date | relevance |
AbstractAbstract
[en] A method of hydrostatic hot extrusion of thick-walled, capillary tubes of Cu-Cr-Zr and of dispersive strengthened copper Cu+3.5 vol.%. TiB2, is presented. The quality-evaluation of the produced tubes is done. (author). 2 refs, 1 fig., 5 tabs
Original Title
Proby wyciskania hydrostatycznego na goraco rur grubosciennych z Cu+3.5% obj. TiB2 i Cu-Cr-Zr
Primary Subject
Source
8. conference: Technology of production of tubes in non-iron industry; 8. konferencja naukowo-techniczna: Technologie produkcji rur w przemysle metali niezelaznych; Cracow (Poland); 24-25 Nov 1994
Record Type
Journal Article
Literature Type
Conference
Journal
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Ma, Fengcang; Lu, Siyao; Liu, Ping; Li, Wei; Liu, Xinkuan; Chen, Xiaohong; Zhang, Ke; Pan, Deng, E-mail: mafengcang@163.com, E-mail: liuping@usst.edu.cn2017
AbstractAbstract
[en] Highlights: • Ti matrix composite reinforced with high aspect ratio TiB fibers is prepared “in situ” successfully by casting. • Orientation of TiB fibers and their strengthening factor as a function of the extrusion ratio are modeled. • The breaking of the TiB fibers may be responsible for the overestimated strengthening factor by the model used. • Extrusion is an effective process for fiber realignment to obtain high strength for this Ti composite. According to shear-lag model, fibers orientation in composites reinforced with short fibers has a significant effect on their strength which can be predict in term of strengthening factor (C0) of fibers. In this work, titanium matrix composite reinforced with TiB fibers was fabricated with enhanced mechanical performances using in situ technologies plus extrusion process. The value of TiB fibers C0 in the as-cast composite was calculated to be very low (0.125). Increase of the strengthening factor of TiB fibers by extrusion was modeled based on a deformation model. The value of C0 is calculated to be 0.442, 0.713 and 0.812 with extrusion ratio 1.5, 2.0 2.5, respectively. Tensile tests showed that extrusion process increased strength of the composite significantly. But C0 was overestimated by this model with high extrusion ratios. The overestimating may be attributed to the broke of TiB fibers during extrusion.
Primary Subject
Source
S0264127517304148; Available from http://dx.doi.org/10.1016/j.matdes.2017.04.058; Copyright (c) 2017 Elsevier Ltd. All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Materials and Design; ISSN 0264-1275;
; v. 126; p. 297-304

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The values given in the literature for the enthalpy of the formation of titanium diboride, as obtained experimentally and by theoretical estimation, range between -32 and -74.4 kcal/mol. In this paper the authors use the method of direct synthesis from elements in a Calvet calorimeter to determine the enthalpy of formation, ΔHsub(f)0, sub(298), of titanium diboride with the composition Tisub(1.000+-0.002)Bsub(2.056+-0.006)Csub(0.009)Nsub(0.003), which was found to be -76.78+-0.83 kcal/mol. They calculate that ΔHsub(f,298) (TiBsub(2.056)=-76.14+-0.85 kcal/mol. The procedure employed makes it possible to carry out the titanium diboride synthesis reaction with the calorimeter at room temperature
Original Title
Ehntal'piya obrazovaniya diborida titana
Primary Subject
Source
International Atomic Energy Agency, Vienna (Austria); Proceedings series; 2 v.; v. 2 p. 467-476; ISBN 9200400752;
; 1975; IAEA; Vienna; Symposium on the thermodynamics of nuclear materials; Vienna, Austria; 21 Oct 1974; IAEA-SM--190/63

Record Type
Book
Literature Type
Conference
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The effect of true porosity and the mean size of pores on hardness of sintered materials based on titanium diboride is investigated. It is established that the Rockwell hardness dependence on porosity is exponential. At equal porosity of 3+-1% the hardness reduces linearly with the growth of the mean size of pores
Original Title
Tverdost' spechennykh materialov na osnove diborida titana
Primary Subject
Source
For English translation see the journal Sov. Powder Metall. Met. Ceram.
Record Type
Journal Article
Journal
Poroshk. Metall; ((no.8); p. 48-50
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Chambersite (Mn3B7O13Cl)–Ti composites were fabricated using spark plasma sintering. The microstructure and phase composition of the composites were investigated along with the effects of chambersite on the mechanical properties and friction properties of Ti. The results show that chambersite reacts with Ti during sintering to form TiB, TixOy, and MnCl2. The mechanical properties of the composites were optimal for the composite with 5 vol% chambersite. Chambersite helps to improve the friction properties of Ti: with increasing amount of chambersite added, the wear rate of the composites decreases. (paper)
Primary Subject
Source
Available from http://dx.doi.org/10.1088/2053-1591/ab5828; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Materials Research Express (Online); ISSN 2053-1591;
; v. 6(12); [9 p.]

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Hardness of TiB2 films is studied within load wide range including low-loads (nanoindentation). Ratio of final depth of indenter penetration (following load relieving) to penetration total depth is shown to constitute for films 0.67 and 0.63 respectively. 9 refs., 3 figs
Original Title
Vliyanie nagruzki pri indentirovanii na velichinu mikrotverdosti plenok diborida titana, poluchennykh magnetronnym raspyleniem
Primary Subject
Record Type
Journal Article
Journal
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Urabe, K.; Miyamoto, Y.; Koizumi, M.
Combustion and plasma synthesis of high-temperature materials1990
Combustion and plasma synthesis of high-temperature materials1990
AbstractAbstract
[en] This paper reports on investigation of the simultaneous formation and sintering of TiB2. The resulting material showed an equigranular structure with grain sizes > 1μm. Coherent grain boundaries were frequently observed. A new phase was found in grain boundaries, and the b-axis of the base was as much as 1 1/2 times longer than that of TiB2
Primary Subject
Secondary Subject
Source
Munir, Z.A. (California Univ., Davis, CA (United States)); Holt, J.B. (Lawrence Livermore National Lab., CA (United States)); 492 p; ISBN 0-89573-756-6;
; 1990; p. 281-286; VCH Publishers Inc; New York, NY (United States); VCH Publishers Inc., 220 East 23 Street, New York 10010 (United States)

Record Type
Book
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The settlements and the grain refining action of TiB2 particles in the melt of electrolytic low-titanium aluminum (ELTA) with Al-4B addition were investigated. The results show that numerous fine TiB2 particles will be formed when Al-4B master alloy is added into the melt of ELTA at the Ti/B mass ratio of 5:1. Because of their fine sizes, though there are also TiB2 particle settlements, there will still be more TiB2 particles being suspended in the melt of the ELTA with Al-4B addition than in the melt of the pure Al with Al-5Ti-1B addition at a given Ti addition level. These fine TiB2 particles, together with the titanium atoms left in the melt, will form more heterogeneous nucleation sites during solidification of the melt, improving the grain refining efficiency and the fading-resisting ability obviously. Comparing with the method of adding Al-5Ti-1B into pure Al, the present method has advantages in resulting in the formation of fine TiB2 particles and preventing their settlements
Primary Subject
Source
S0921-5093(06)00438-2; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing; ISSN 0921-5093;
; CODEN MSAPE3; v. 427(1-2); p. 148-153

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Galievsky, G V; Rudnev, V V; Efimova, K A, E-mail: kafcmet@sibsiu.ru2018
AbstractAbstract
[en] The oxidation and thermal-oxidative stability of titanium diboride are studied during its storage and heating in the air. It was established that during the first 24 hours titanium diboride actively adsorbs oxygen and moisture: the oxidation of TiB2 (1) reaches 11.06·10−7, TiB2 (2) –8.15 · 10−7, TiB2 (3) – 31.5·10−7 kg O2/m2. Analytical dependencies were obtained for the calculation of oxidation. When heated in the air, titanium diboride nanocrystals are oxidized in the temperature range (623 – 673) ± 15 K, microcrystals at a temperature of 688 ± 5 K and higher. (paper)
Primary Subject
Source
Metallurgy-2017: 20. International Scientific and Research Conference Metallurgy: Technologies, Innovation, Quality; Novokuznetsk (Russian Federation); 15-16 Nov 2017; Available from http://dx.doi.org/10.1088/1757-899X/411/1/012020; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Literature Type
Conference
Journal
IOP Conference Series. Materials Science and Engineering (Online); ISSN 1757-899X;
; v. 411(1); [6 p.]

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Burkhanov, G.S.; Bychkova, M.I.; Kuz'mishchev, V.A.
Riecansky (V.E.) Technical Translations, Cambridge (United Kingdom)1999
Riecansky (V.E.) Technical Translations, Cambridge (United Kingdom)1999
AbstractAbstract
[en] The Ti B2 compound has high electrical conductivity, the metallic type of conduction and a complicated layer structure; this is typical of a number of high-temperature superconductors. The complicated structure of this compound is followed by triangular prisms of titanium with the boron atoms in the centre. The boron atoms, situated in the same plane, formed corrugated networks with hexagonal cells. In order to investigate the possibilities of the existence of high-temperature superconductivity in high-purity single crystals titanium diboride, investigations were carried out on specimens of this compound, with special reference given to their electrophysical properties
Original Title
High-temperature superconductors
Source
1999; 5 p; Available from British Library Document Supply Centre- DSC:9023.190(VR-Trans--8716)T; Translated from Russian (Fiz. Khim. Obrab. Mater. 1995 (4) p. 123-128)
Record Type
Report
Literature Type
Translation
Report Number
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
1 | 2 | 3 | Next |