Titanium carbonitride

A hquid-phase reaction in which TiCl is reacted with hquid ammonia at —35 C to form an adduct that is subsequendy calcined at 1000°C has also been proposed (35). Preparation of titanium nitride and titanium carbonitride by the pyrolysis of titanium-containing polymer precursors has also been reported (36). 

The first carbonitride alloys based on Ti(C,N)—Ni—Mo were iatroduced ia 1970 foUowed by (Ti, Mo)(C,N)-based compositions having fine microstmctures that provided a balance of wear resistance and toughness (4). Continued research on the titanium carbonitride alloys, often called TiC—TiN cermets, ia the 1980s led to the developmeat of complex cermets having a variety of additives such as molybdeaum carbide(2 l) [12069-89-5] M02C, TaC, NbC, zirconium carbide [12020-14-3], ZrC, hafnium carbide [12069-85-1], HfC, WC, vanadium carbide [12070-10-9], VC, chromium carbide (3 2)... 

Molybdenum carbide is also used in TiC—Ni-based alloys and in titanium carbonitride-based cermets for metal-cutting appHcations. 

Kohlenstoff-hydrat, n. carbohydrate, -kalium, n. potassium carbide, -kem, m. carbon nucleus. -kette,/. carbon chain, -legiening,/, carbon alloy, -metall, n. carbide, kohlenstoffrelch, a. rich in carbon. Kohlenstoff-silicium, n. carbon silicide. -ske-lett, n. carbon skeleton, -stahl, m. carbon steel, -stein, m. carbon brick, -sticlKtoff-titan, n. titanium carbonitride. -sulfid, n. 

Titanium Carbonitride. Titanium carbonitride (TiCJSfi.x) combines the wear properties of TiC with the low friction and oxidation and chemical resistance of TiN. It is obtained in a hydrogen atmosphere and at a temperature of approximately 1000°C by the following simplified reaction ... 

Pierson, FJ. O., Titanium Carbonitride Obtained by Chemical Vapor Deposition, Thin SolidFilms, 40 41-47 (1977)... 

Titanium Carbonitride. Ti(C,N) is a solid solution of TiC and TiN and combines the properties of both materials. It offers excellent protection against abrasive wear and has good lubricating characteristics. It is used to coat tools and dies for the processing of ceramics, graphite, and filled plastics. 

Bonetti, R. S., et al., CVD of Titanium Carbonitride atModerate Temperature Properties and Applications, Metal Powder... 

Titanium(IV) guanidinato complexes, which are easily accessible by the standard synthetic routes (cf. Section III.B.2), have been studied as precursors to titanium carbonitride. Thin films of titanium carbonitride were obtained by low-pressure chemical vapor deposition of either [(Me3Si)2NC(NPE)2]TiCl(NMe2)2 or [Me2NC(NPE)2]2TiCl2 at 600 Most recent developments in this field... 

Titanium nitride (or titanium carbonitride) previously called cyano-nitrogen titanium from titanium oxide, carbon and nitrogen, again at about 1400°C. (16). 

Nitride Coatings. Carbide tips coated with titanium nitride or titanium carbonitride are usually manufactured by a CVD process using T1CI4, H4, and N2 in a hot-wall reactor. 

Chemical vapor deposition is used industrially to deposit protective hard coatings on metal objects. Common coatings are titanium carbide (TiC), titanium nitride (TiN), titanium oxycarbide (TiCxOy), titanium carbonitride (TiCxNy), titanium oxycarbonitride (TiCxNyOz).91 Coatings based on TiC... 

Titanium carbide/nickel and titanium carbonitride/nickel cermets are considered excellent substitutes for tungsten carbide/cobalt cermets because nickel is more abundant and less expensive than cobalt.2... 

There are three different methods for producing TiC, TiN, and titanium carbonitride (TiC N ... 

Combustion of undiluted Ti or Ti + 0.5 C compacts in gaseous nitrogen at pressures up to 1.4 MPa resulted in incomplete conversion to the nitride or carbonitride. The product included TiN and solid solutions of nitrogen in titanium for the Ti samples and a single non-stoichiometric titanium carbonitride phase for the Ti + 0.5 C samples. 

The synthesis of titanium nitride and titanium carbonitride by self-propagating combustion... 

We have also observed the formation of excess carbon when using CpTiCl2[N(SiMe3)2] (9).35 This compound was shown to form titanium carbonitride thin films on silicon and steel substrates at 823 K. The presence of Cl in the molecule induces a lower adherence of the films on steel substrates versus silicon. In order to reduce this problem, we have prepared compound 10. Unfortunately, the very low chemical stability of this compound prevented us from carrying out thermoanalytical and CVD studies.29... 

Zhao, Z., Johnson, M., Shen, Z. (2002), Microstructure and mechanical properties of titanium carbonitride whisker reinforced P-sialon composites , Materials Research Bulletin, 37, 1175-1187. 

Figure 16 Micro structure of a titanium carbonitride hardmetal (cermet) showing the core-and-rim type structure of hard particles...

The most important metallic hard materials, as regards quantity, are tungsten carbide, WC, and titanium carbide, TiC with a production worldwide in 1995 of 20 10- t/a and 3.5 10 t/a respectively. Also worthy of mention is the 1.5 10 t/a of titanium carbonitride, Ti(C,N), produced in 1995, which is used as the hardening component in the cermet sector. Other metallic hard materials are produced in quantities below that of titanium carbide. In individual cases they can be very important as components of alloys in the realization of particular material properties. 

Figure 8.9. Representative N NMR spectra of inorganic nitrides. A. AIN under static (upper) and MAS (lower) conditions, from Bastow et al. (1998). B. MAS spectra of cubic BN (upper), hexagonal BN (middle) and the simulation of hexagonal BN (lower), from Jeschke and Jansen (1998). C. Static spectra of TiN and a series of titanium carbonitrides, from MacKenzie et al. (1995). All spectra used by permission of the copyright owners.

Figure 8.32. Static Ti NMR spectra of A. TiAg, showing the narrow resonances of Ti and separated by 6 kHz, B. TiB2. showing the lineshape of the central transition of (lower) with the central transition lineshape superimposed (upper). From Bastow et al. (1998a), by permission of the copyright owner. C. TiC and TiN, showing resonances from both " Ti and Ti in the single cubic sites, and a series of titanium carbonitride solid solutions formed between these two compounds. From MacKenzie et al. (1995), by permission of the copyright owner.

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