Results 171 to 180 of about 338,671 (208)
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Effect of Ti/C ratio on the SHS reaction of Cr–Ti–C system
Materials Letters, 2007Abstract The effect of Ti/C molar ratio on the SHS reaction of the Cr–Ti–C system was investigated. With the Ti/C ratio increasing, the type of products synthesized by SHS varied, and the amount of solid solution (Ti,Cr)C ss increased in the final products; furthermore, also the lattice parameter of (Ti,Cr)C ss increased due to the reduction in the
W.N. Zhang +3 more
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Ageing of C-Containing and C-Free Ti-15Cr and Ti-15-3
Materials Science Forum, 2007Samples of Ti-15Cr and Ti-15V-3Sn-3Al-3Cr (wt%) containing controlled additions of carbon up to 0.2wt% and different oxygen contents have been quenched and aged at temperatures between 400 and 600°C. Optical, scanning and analytical transmission electron microscopy have been used to characterise the microstructures of the quenched and aged samples ...
Xin Hua Wu +5 more
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Ti–N, Ti–C–N, Ti–Si–N coatings obtained by APCVD at 650–800 °C
Applied Surface Science, 2002Abstract Ti–N, Ti–C–N, and Ti–Si–N coating systems obtained by atmospheric pressure chemical vapor deposition (APCVD) with TiCl 4 , C 2 H 2 or SiCl 4 , and NH 3 as reactants have been examined at 650–800 °C in this study. Low pressure CVD (LPCVD) has been applied for deposition by the TiCl 4 –NH 3 system instead of APCVD.
Dong-Hau Kuo, Wen-Chieh Liao
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Combustion synthesis of Ti(C, N)–TiB2 from a Ti–C–BN system
Journal of Alloys and Compounds, 2009Abstract In this paper, a simple way of fabricating TiCxNy–TiB2 ceramics through the combustion reaction of Ti, C and BN powder mixtures in an argon atmosphere is reported with an emphasis on the effects of the C/(C + N) ratio on the SHS reaction behaviors and mechanism.
Lei Zhan +3 more
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Arc deposition of TiC and TiCN using acetylene as a reactive gas
Vacuum, 1992Abstract Thin hard coatings on cutting tools and metal-forming dies now contribute substantially to the reduction of tool wear. They permit cost-effective machining processes and open the way to new tool applications. Titanium carbonitride physical vapour deposition (PVD) coatings have demonstrated their high performance potential in interrupted cut ...
O Knotek, F Löffler, G Krämer
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Preparation of Ti–Ta–(C,N) by mechanical alloying Ti(C,N) and TaC
International Journal of Refractory Metals and Hard Materials, 2013Abstract Ti(C,N) and TaC powders were mechanically alloyed and FAST/SPS sintered to produce dense (Ti,Ta)(C,N) cermets. Although a pronounced reduction in the crystallite size was observed after 48 hours of mechanical alloying, the bulk of the Ti(C,N) remained unreacted and the formation of solid solution took place only during sintering. The results
Melisha Naidoo +3 more
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2017
By studies of materials based on the Ti???AlC??? MAX phase containing inclusions of titanium carbide it has been shown that as a titanium carbide content increases from 2 to 99 %, the nanohardness and Young modulus of the material increase from 2.0??0.4 to 23.6??1.2 GPa and from 137??21 to 447??11 GPa, respectively.
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By studies of materials based on the Ti???AlC??? MAX phase containing inclusions of titanium carbide it has been shown that as a titanium carbide content increases from 2 to 99 %, the nanohardness and Young modulus of the material increase from 2.0??0.4 to 23.6??1.2 GPa and from 137??21 to 447??11 GPa, respectively.
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Assessment of the Ti-W-C System and Calculations in the Ti-W-C-N System
International Journal of Materials Research, 1996The Ti-W-C system is assessed and the phase diagram is presented through various sections and projections. In general, good agreement is obtained between calculations and experiments. The TiC-TiN-WN-WC section is calculated at graphite saturation in the quaternary Ti-W-C-N system.
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2018
???????????????? ???????????????????? ?????????????????????????????????? ???????????????????? ?????????????????? ?????????????????????????????????????? ???????????????? ???????????? ?????????? ??5??10 ?? ???????????????????????????? ????????????, ???? ?????????????? ?????????????? ???????????? (Ti, W)C ?????????????????????? ??????????????. ????????????
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???????????????? ???????????????????? ?????????????????????????????????? ???????????????????? ?????????????????? ?????????????????????????????????????? ???????????????? ???????????? ?????????? ??5??10 ?? ???????????????????????????? ????????????, ???? ?????????????? ?????????????? ???????????? (Ti, W)C ?????????????????????? ??????????????. ????????????
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2017
Using the program complex ???Gaussian'03??? in the Electron density functional theory approach, experiments on segmentation of nanoclusters are conducted. As showed, that even a metastable type flat shapes Ti???C??? and Ti???C??? can spontaneously form nanoclusters Ti??????C?????? and Ti??????C??????
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Using the program complex ???Gaussian'03??? in the Electron density functional theory approach, experiments on segmentation of nanoclusters are conducted. As showed, that even a metastable type flat shapes Ti???C??? and Ti???C??? can spontaneously form nanoclusters Ti??????C?????? and Ti??????C??????
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