Lattice parameter of the non-stoichiometric compound TiNx

Nagakura, Sigemaro; Kusunoki, Toshiaki; Kakimoto, F.; Hirotsu, Yoshihiko

doi:10.1107/s0021889875009545

Cited by 107 publications

(32 citation statements)

References 2 publications

(2 reference statements)

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“…These qualitative measurements do not provide the exact value of "y" in the buried In x Al 1Àx N 1Ày layers of samples A and B. Nevertheless, these results agree with others previously reported in non-stoichiometric InN 1Ày , InN 1+y [52] or RN 1Ày [53] (R = Ti [54], Nb, V, Mo) solid solutions where structures with increasing N vacancies preserve their crystallography but shrink their cells.…”

Section: Resultssupporting

confidence: 87%

Structural and compositional homogeneity of InAlN epitaxial layers nearly lattice-matched to GaN

et al. 2010

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Section: Resultssupporting

confidence: 87%

Structural and compositional homogeneity of InAlN epitaxial layers nearly lattice-matched to GaN

et al. 2010

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“…Table 2 summarizes the calculated values of high (hkl) index XRD peak positions with CuK radiation for carbides and nitrides of Ti, V, Nb and Ta, on the basis of available literature data. [22][23][24][25][26] This inherent nature of extensive homogeneity composition ranges for carbides and nitrides of Ti, V, Nb and Ta makes the XRD characterization of the synthesized carbonitride difficult although we present the possible lattice constant vs. carbo-nitride composition relationship as depicted in Fig. 2 for convenience.…”

Section: Characteristic Features Of Carbo-nitrides Of Ti V Nbmentioning

confidence: 99%

Reactions of Ti, V, Nb and Ta with N2 Gas at 2000°C under Concentrated Solar Beam in a Solar Furnace at PROMES-CNRS

Shohoji

Oliveira

Rosa³

et al. 2011

Mater. Trans.

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Reactions of d-group transition metals including Ti, V, Nb and Ta with N 2 gas were investigated at target temperature of 2000 C under heating with concentrated solar beam at PROMES-CNRS in Odeillo (France). In the typical experimental setup using graphite crucible as the sample holder, synthesis of pure nitride with fcc (face centred cubic) structure was proved to be difficult on account of inevitable C 2 radical plume with high carbon activity a(C) from the graphite components and the majority of reaction products were carbo-nitride. By insertion of Sky blue filter in the solar beam path before entering into the parabolic concentrator, C 2 radical formation appeared to be efficiently suppressed and phases with high N content were synthesized. However, under conditions in which C 2 radical plume yield was considerable, nitrogen content in the reaction products became suppressed and tetragonal Nb 4 N 3 yielded in place of fcc NbN from Nb or N-deficit sub-nitride Ta 2 N in place of mono-nitride TaN formed.

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“…Wu et.al [70] used XRD to determine the composition of the nitrided zone and to measure the lattice parameter a of the TiN. a was measured to be 4.24 Å which is close to the literature value of 4.241 Å of stoichiometric TiN [118][119]. Santos et.al [72] measured this parameter too and used grazing incidence scans to determine the coating thickness.…”

Section: Microhardness Measurementsmentioning

confidence: 58%

Laser nitriding: investigations on the model system TiN. A review

Höche

Schaaf

2010

Heat Mass Transfer

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Nitriding is a well known technique to improve properties of materials. The process utilizing laser contains many different processes like heat transport and melting effects, diffusion and convection, which partially determine the synthesized coatings. This review concludes the research on titanium nitride synthesis in reactive ambient and draws conclusions for the general handling of the method. Afterwards, it becomes clear which and why, transport processes limit the coating properties. IntroductionHard material systems such as titanium nitride play an important role within the field of material sciences and industrial applications. In particular wear and corrosion protection are based on such systems. Beside the classical manufacturing procedures such as PVD or CVD, the method of the direct laser synthesis in a reactive gas environment, as examined here, represents an alternative to the production of such coatings. This review discusses the synthesis of such functional coatings on the system titanium -nitrogen by different laser irradiation based on own results respectively the literature and tries to give a general overview of the physical respectively transport processes taking place. Thus, experiments from the last three decades using similar experimental setups will be compared and discussed. Due to the availability of data of investigations utilizing titanium and nitrogen, this system was taken as a general model. After a discussion of several different experimental analyses and modelling results, the treatments get parameterized. This results in large potentials for technical applications. Finally, general conditions for the synthesis of such coatings with this procedure were set up. By means of these results it is possible to achieve purposefully predefined layer characteristics. The review concludes the most important publications containing research about this process. Thus, it could be assumed to be a reference in relation to laser nitriding or -carburizing. [4] or also hybrid procedures. A further alternative and very simple method is the direct lasers synthesis. The material is placed in a reactive gas environment and will be irradiated with laser light. Due to the developing physical and chemical effects coatings are synthesized, which possess special treatment dependent characteristics. Carburizing, nitro carburizing and/or nitriding are to most common methods from this field of processes. The method of nitriding particularly assists the improvement of tribological properties of surfaces. The surface hardness gets increased, whereby the wear resistance rises. Furthermore, these coatings are usually very non-reactive, which leads to an increase in corrosion protection. In the following the method will be studied more exactly and will be explained. Quantifying of the processes gets an important aim of the work. Arising phenomena will also be modelled. To do these investigations, the model titanium nitrogen has been used. It is a well known and often used system, and has been investigated ...

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Lattice parameter of the non-stoichiometric compound TiN_x

Abstract: Contamination‐free TiNx was prepared and the lattice parameter (a0)–nitrogen content (x) relation determined. The result can be expressed as a0 = 4.1925 + 0.0467x (in Å) in the range 0.605 ≤x≤ 0.999. Density measurement showed that no titanium vacancies existed in the lattice.

Cited by 107 publications

References 2 publications

Structural and compositional homogeneity of InAlN epitaxial layers nearly lattice-matched to GaN

Structural and compositional homogeneity of InAlN epitaxial layers nearly lattice-matched to GaN

Reactions of Ti, V, Nb and Ta with N<SUB>2</SUB> Gas at 2000°C under Concentrated Solar Beam in a Solar Furnace at PROMES-CNRS

Laser nitriding: investigations on the model system TiN. A review

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Lattice parameter of the non-stoichiometric compound TiNx

Abstract: Contamination‐free TiNx was prepared and the lattice parameter (a0)–nitrogen content (x) relation determined. The result can be expressed as a0 = 4.1925 + 0.0467x (in Å) in the range 0.605 ≤x≤ 0.999. Density measurement showed that no titanium vacancies existed in the lattice.

Cited by 107 publications

References 2 publications

Structural and compositional homogeneity of InAlN epitaxial layers nearly lattice-matched to GaN

Structural and compositional homogeneity of InAlN epitaxial layers nearly lattice-matched to GaN

Reactions of Ti, V, Nb and Ta with N<SUB>2</SUB> Gas at 2000&deg;C under Concentrated Solar Beam in a Solar Furnace at PROMES-CNRS

Laser nitriding: investigations on the model system TiN. A review

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Lattice parameter of the non-stoichiometric compound TiN_x

Reactions of Ti, V, Nb and Ta with N<SUB>2</SUB> Gas at 2000°C under Concentrated Solar Beam in a Solar Furnace at PROMES-CNRS