Results 71 to 80 of about 320 (121)
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Microstructure and Properties of the Cermets Based on Ti(C,N)
International Journal of Refractory Metals and Hard Materials, 2009Abstract Effect of Mo and Mo 2 C on microstructure and properties of Ti(C, N)-based cermets was investigated in this paper. The results shown that Ti(C, N) grain diameter and thickness of the rim can be reduced by adding the weight percentage of Mo from 5 to 10, and Ti(C, N) grain can be wetted by Ni–Cu–Mo liquid so as to getting small contiguity of ...
Shiquan Zhou, Wei Zhao, Weihao Xiong
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Preparation and characterization of Ti(C,N)-based nano-cermets
Ceramics International, 2014Abstract Nowadays, preparation of nano-Ti(C,N)-based cermet of high performance remains a big challenge due to the difficulty in dispersion of nano-powder. In the paper, well dispersion of nano-powders was achieved by ultrasonic treatment, surfactant addition and pH value adjustment. The results showed that nano-powder agglomerates can be broken down
Zhixing Guo +5 more
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Carbon nanotube/ultrafine grade Ti(C,N) based cermets composite
Materials Science and Technology, 2011Effects of CNT addition on the microstructure and mechanical properties of Ti(C,N)–WC–Mo–Ni cermets were studied. Ti(C,N) based cermets present the typical dark core/grey rim and white core/grey rim grains. The amount of the typical dark core/grey rim grains decreases with the increase in CNT addition.
Y Li, N Liu, Y Li
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Sintering of Ti(C,N)-Based Cermets: The Role of Compaction
Materials and Manufacturing Processes, 1995Abstract Different compaction processes were employed in studying the effect of green state on the sintering of TiC-TiN-Ni-Mo2C and Ti(C0.3N0.)-Ni-Mo2C cermets. Specimens were uniaxially pressed and some being subsequently compacted by cold isostatic pressing. Liquid and solid phase sintering was carried out in nitrogen atmosphere. Green state porosity,
ZHANG, S, LU, GQ
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Ti(C,N) based cermets with Cu-containing binder phase
2021Ti(C,N)-Co/Ni-based cermets were prepared with various Co/Ni ratios and addition of Cu to the starting formulation. The powder formulations also contained tungsten and molybdenum carbides in various proportions while both the [W] and [Mo] concentrations were kept identical. Samples were prepared with either 9.7 or 16.4 vol% binder phase.
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Denitrification of Ti(C,N) based cermet during powder mixing process
Journal of Materials Science, 2002Changes in the nitrogen content of Ti(C,N)-based cermets during powder mixing and sintering processes were investigated and the denitrification mechanism was re-evaluated. The denitrification of N-containing cermets occurrs mainly during the powder mixing process, and is relatively small during sintering periods. Denitrification during powder mixing is
Joo Seung Park, Hu-Chul Lee
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Ultrafine (Ti, M)(C, N)-based cermets with optimal mechanical properties
International Journal of Refractory Metals and Hard Materials, 2011Abstract A tough and strong cermet with the composition (Ti,20M,0.2V)(C,N)-16M-20Ni/Co (M = W,Mo) was prepared by mixing WC and Mo 2 C with ultrafine (Ti,M)(C,N) powders, and then, processed via a conventional P/M technique. It has an ultrafine and distinct core/rim structure, resulting in excellent mechanical properties: bending strength of 2210 MPa,
Ying Liu +3 more
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Spark plasma sintering properties of ultrafine Ti(C,N)-based cermet
Journal of Wuhan University of Technology-Mater. Sci. Ed., 2004Ultrafine Ti(C,N)-based cermet was sintered by SPS from 1050°C to 1450°C and its sintering properties, such as porosity, mechanical properties and phase transformation, were investigated by optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD), and differential scanning calorimeter (DSC). It is found that the spark plasma
Feng Ping +4 more
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The microstructure of ultra-fine grade Ti (C, N)-based cermets
International Journal of Machining and Machinability of Materials, 2006The microstructure of ultra-fine grade Ti (C,N)-based cermets was examined by X-Ray Diffractometry (XRD), Transmission Electron Microscopy (TEM) and Scanning Electron Microscopy (SEM). A kind of new core/rim structure and an unknown compound based on Ni, Mo, W and C were detected and their formation mechanisms were discussed.
Ning Liu, Sheng Chao
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Microwave sintering of Ti(C, N)-based cermet cutting tool material
Ceramics International, 2018Abstract A Ti(C, N)-based cermet cutting tool material with satisfactory properties was fabricated in an energy-efficient way by microwave sintering. The effect of microwave singtering process and the component ratio of carbide (WC, Mo 2 C) on phase composition, microstructure and mechanical properties were studied. The cermet containing 5 wt% WC and
Zengbin Yin +3 more
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