Anomalies in the concentration relationship of thermal conductivity of sintered composites with an ultradispersed component in the TiN-AlN system

Dozhdikova, O. L.; Zarichnyak, Yu. P.; Zuev, A. V.; Krylov, S. O.; Ordan’yan, S. S.; Stepanenko, E. K.

doi:10.1007/bf00796254

Cited by 7 publications

(8 citation statements)

References 1 publication

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“…The change in fractal dimension along the layer of strongly micro-nonhomogeneous material can result in nonuniformity of its thermal and physical characteristics, as experimentally recorded in [263], and, consequently, in undulating temperature distribution (Fig. 3).…”

Section: Figmentioning

confidence: 82%

Thermodynamics and kinetics of non-autonomous phase formation in nanostructured materials with variable functional properties

Коваленко¹,

Тугова²

2018

Nanosystems: Phys. Chem. Math.

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The review addresses physico-chemical aspects of interaction between macro-, micro-and nano-structured units of matter with the analysis of interface and grain boundary entities (nonautonomous phases) mechanisms and formation, as well as methods of their control in order to achieve the desired functional properties of nanostructured materials. Construction of these materials involves identification of thermodynamic and kinetic regularities in the organization processes, state and genesis parameters of nonautonomous phases formed as specific nanosized structures in a limited space between the macroscopic volume phases and with the limited amount of substance, which differ significantly on their properties, structure and composition from the appropriate characteristics of volume phases. Studying them is based on the application and development of theoretical and experimental methods of non-equilibrium thermodynamics, chemical kinetics, nonlinear dynamics and fractal analysis to determine the conditions of self-organization or materials directed synthesis with a high content of nonautonomous phases.

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Section: Figmentioning

confidence: 82%

Thermodynamics and kinetics of non-autonomous phase formation in nanostructured materials with variable functional properties

Коваленко¹,

Тугова²

2018

Nanosystems: Phys. Chem. Math.

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“…Compared with the IR spectrum of the blended precursor, the intensities of the bands due to the C-H stretching vibration (2760 to 2960 cm À1 ) 23 decrease remarkably in the IR spectrum of the residue pyrolyzed at 200°C under NH 3 (Fig. 2).…”

Section: Pyrolysis Behavior Of the Blended Precursormentioning

confidence: 90%

“…23 Unlike TG analysis under He (15 mass% of mass loss up to 200°C), 47 mass% of the precursor was lost after the pyrolysis under NH 3 at 200°C. All of these results indicate that a large proportion of the organic groups were removed by amine-exchange reactions between the precursor and NH 3 . 24 The disappearance of the band at 1860 cm À1 indicates that no Al-H groups are present in the residue, possibly due to its reaction with NH 3 :…”

mentioning

confidence: 88%

“…1,2 Ti-Al-N ceramic composites show higher thermal conductivity, higher strength and better lightshielding properties than single TiN and AlN phases. 3 In addition, the friction coefficients of the Ti-Al-N ceramic composites are smaller than those of TiN and AlN. 4 Because of their superior properties, Ti-Al-N ceramic composites are applied to heating materials and antifriction material.…”

Section: Introductionmentioning

confidence: 99%

“…4 Because of their superior properties, Ti-Al-N ceramic composites are applied to heating materials and antifriction material. [3][4][5] Ti-Al-N ceramic composites are usually prepared by traditional powder processing using TiN and AlN powders as starting materials. The chemical vapor deposition (CVD) process has been applied to the preparation of TiN-AlN composite films recently, 6 but it is difficult to apply it to largescale production and to coating preparation on substrates with complex shapes because of its largeequipment requirement.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Preparation and pyrolysis of a blended precursor possessing TiN and AlN bonds

Cheng

Sugahara

Kuroda

2001

Applied Organom Chemis

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The preparation and pyrolysis of a blended precursor possessing Ti-N and Al-N bonds were investigated. The precursor was prepared by mixing (HAlN i Pr) n , whose main component was a cage-type compound, and an aminolysis product of Ti(NMe 2 ) 4 with MeHNCH 2 CH 2 NHMe with a molar ratio of Ti:Al = 2:1. IR analysis of the products pyrolyzed under NH 3 -N 2 indicated that a large proportion of the organic groups in the precursor were removed by an amine-exchange reaction during the pyrolysis under NH 3 ; thus, the products contained only a small amount of carbon. On the contrary, a considerable amount of carbon was present in the product pyrolyzed under Ar. Composites consisting of AlN and an NaCl-type compound were obtained after pyrolysis of the precursor under both NH 3 -N 2 and Ar. The composition of the NaCl-type compound depended significantly on the pyrolysis atmosphere.

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Properties of nanocrystalline refractory compounds (review)

Adrievskii¹

1994

Powder Metall Met Ceram

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Anomalies in the concentration relationship of thermal conductivity of sintered composites with an ultradispersed component in the TiN-AlN system

Cited by 7 publications

References 1 publication

Thermodynamics and kinetics of non-autonomous phase formation in nanostructured materials with variable functional properties

Thermodynamics and kinetics of non-autonomous phase formation in nanostructured materials with variable functional properties

Preparation and pyrolysis of a blended precursor possessing TiN and AlN bonds

Properties of nanocrystalline refractory compounds (review)

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