Synthesis of nano Ti(C,N) powder by mechanical activation and subsequent carbothermal reduction–nitridation reaction
Source abstract
Abstract
Abstract Nano Ti(C,N) powder with average particle size of below 100 nm was synthesized from nano anatase/carbon black mixtures employing mechanical milling activation and subsequent carbothermal reduction–nitridation (CRN) reaction. The activated and heat-treated powders have been characterized by X-ray diffraction (XRD), reaction dynamics of activated powders has been studied by thermogravimetry-differential scanning calorimetry (TGA-DSC), and Ti(C,N) products were evaluated by transmission electron microscope (TEM). The results show that CRN reaction of anatase was enhanced by pre-milling the starting powders. Thus, onset formation temperature and holding time of Ti(C,N) decreased from 1300 °C to 1150 °C and from 4 h to 2 h, respectively. However, mechanical activation did not alter phase evolution sequences of TiO2 CRN reaction.
Source: openaire · Quality: candidate unverified · Source record ↗
References (17)
Show source-provided references
1. Microstructural evolution and characteristics during sintering of submicron Ti(CN)-based cermet
2. Microstructure and tribo-mechanical properties of ultrafine Ti(CN) cermets10.1016/S0263-4368(02)00004-5 ↗
3. Effect of ultra-fine powders on the microstructure of Ti(CN)-x WC-Ni cermets10.1016/j.actamat.2003.11.021 ↗
4. Synthesis of ultrafine titanium carbonitride powders10.1002/aoc.164 ↗
5. Synthesis of ultrafine TiC1–x and Ti(CN) powders via planetary milling10.1179/003258904225015455 ↗
6. Low temperature mechanochemical formation of titanium carbonitride10.1016/S0965-9773(99)00036-7 ↗
7. Synthesis of Ti(C,N) ultrafine powders by carbothermal reduction of TiO2 derived from sol–gel process10.1016/S0955-2219(99)00210-1 ↗
8. A simple route to prepare nanocrystalline titanium carbonitride10.1016/S0025-5408(02)00736-5 ↗
9. Synthesis of nanocrystalline TiC powders by mechanical alloying10.1016/0965-9773(95)00012-4 ↗
10. Synthesis of nanocrystalline TiC powder by mechanical alloying10.1016/S0928-4931(01)00283-1 ↗
11. Formation of TiB2/TiN/Ti(CxN1−x) nanocomposite powder via high-energy ball milling and subsequent heat treatment10.1016/S0925-8388(01)01769-8 ↗
12. Ambient temperature mechanochemical formation of titanium nitride-alumina composites from TiO2 and FeTiO310.1111/j.1151-2916.1999.tb02087.x ↗
13. Mechanically enhanced reactivity of silicon for the formation of silicon nitride composites10.1111/j.1151-2916.1998.tb02407.x ↗
14. Phase transformation of nanocrystalline anatase powders induced by mechanical activation10.1111/j.1551-2916.2004.01164.x ↗
15. Toth · 1971
16. Reaction sequences and influence factors during preparation of Ti(C,N) powders10.1016/j.jallcom.2006.03.088 ↗
17. Xiang DP. Applied fundamental research on preparation of Ti(C,N) based on carbothermal reduction–nitridation of nano-TiO2. A dissertation submitted to Sichuan University for the degree of doctor in philosophy; 2007 [in Chinese].