scholarly journals Influence of Sintering Process on Microstructure and Mechanical Properties of Ti(C,N)-Based Cermet

Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 3938
Author(s):  
Kaixun Ji ◽  
Yanxin Meng ◽  
Fuzeng Wang ◽  
Yousheng Li
Keyword(s):  
Mechanical Properties ◽  
Sintering Temperature ◽  
Holding Time ◽  
Sintering Process ◽  
X Ray Diffraction ◽  
Vacuum Sintering ◽  
Material Microstructure ◽  
Cermet Material ◽  
Hardness Tester ◽  
Microstructure And Mechanical Properties

In this study, a Ti(C,N)-based cermet material was prepared through vacuum sintering. The research also investigates how holding time and maximum sintering temperature influence the material microstructure and mechanical properties. X-ray diffraction (XRD), energy dispersive spectroscopy (EDS) were used to analyze the composition of the cermet. The microstructure of the cermet was analyzed and examined using a scanning electron microscope (SEM). A Vickers hardness tester was used to test the mechanical properties of the materials. As indicated by testing results, the hardness of the material decreases as the temperature of sintering increases, and its fracture toughness increases gradually as holding time increases. Ti(C,N)-based cermet manifested the optimal mechanical properties when sintering was conducted under 1400 °C with 80 min of holding time. Moreover, the material microstructure is significantly affected by the sintering process. The grain size of Ti(C,N) cermets increases as the sintering temperature increases. The microstructure tends to be uniform and the complete core-rim structures are established as the holding time increases.

Effects of Sintering Process on the Properties of Ti3SiC2/Cu Composite

2012 ◽  
Vol 512-515 ◽  
pp. 377-381 ◽  
Author(s):  
Jin Rong Lu ◽  
Yang Zhou ◽  
Yong Zheng ◽  
Shi Bo Li ◽  
Zhen Ying Huang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Vickers Hardness ◽  
Hot Pressing ◽  
Sintering Temperature ◽  
Sintering Process ◽  
Vacuum Sintering ◽  
New Type ◽  
Sintering Conditions ◽  
The Relationship ◽  
Better Than

In this paper, a new type of Ti3SiC2/Cu composites with the volume fractions of 30% Ti3SiC2 particle was prepared by hot pressing and vacuum sintering respectively. The effects of sintering temperature and holding time on the density, resistance and Vickers hardness of Cu-30vol%Ti3SiC2 composite were investigated. The results show that the mechanical properties of the composites prepared by hot pressing are better than that prepared by vacuum sintering. The relative densities of Cu-30vol% Ti3SiC2 composites are rather high in suitable sintering conditions. It achieved 100% for the composites prepared by hot pressing at 930°C for 2h, and 98.4% for the composites prepared by vacuum sintering at 1250°C for 1h. At the same time, the maximum Vickers hardness reached 1735MPa at 900°C by hot pressing. The resistance and Vickers hardness of the composites decreased with an increase in sintering temperature, whereas the density increased. Scanning electron microscope (SEM) and energy-dispersive spectroscopy (EDS) were used to observe the microstructure of the composites. The relationship between microstructure and mechanical properties was discussed.

scholarly journals Microstructure and Mechanical Properties of Multicomponent Metal Ti(C,N)-Based Cermets

Metals ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 927
Author(s):  
Xuelei Wang ◽  
Qiufeng Wang ◽  
Zhaojun Dong ◽  
Xiaoqian Zhou ◽  
Xiaoliang Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Energy Dispersive Spectrometry ◽  
Bending Strength ◽  
Binder Phase ◽  
X Ray Diffraction ◽  
Vacuum Sintering ◽  
X Ray ◽  
Weight Percentage ◽  
Microstructure And Mechanical Properties ◽  
Backscatter Scanning Electron Microscopy

Ti(C,N)-based cermets with multicomponent ingredients were prepared using vacuum sintering technology. The effect of molding agents, binder phase and sintering temperature on Ti(C,N)-based cermets were studied. The optimum molding performance was obtained by adding 2% polyvinyl alcohol (PVA-1788). The microstructure and mechanical properties of Ti(C,N)-based cermets were investigated. The Ti(C,N)-based cermet with a weight percentage of TiC:TiN:Ni:Co:Mo:WC:Cr3C2:C = 40:10:20:10:7:8:4:1 and sintered at 1450 °C had the optimal mechanical properties. The relative bending strength, Vickers hardness, elastic modulus and wear resistance were 2010 MPa, 15.01 GPa, 483.57 GPa and 27 mg, respectively. Additionally, X-ray diffraction (XRD), backscatter scanning electron microscopy pictures (SEM–BSE), energy dispersive spectrometry (EDS) and optical micrographs of Ti(C,N)-based cermets were characterized.

Effect of Sintering Temperature on Microstructure and Mechanical Properties of Ti-Nb-Sn-HA Composites Produced by Powder Metallurgy

2014 ◽  
Vol 625 ◽  
pp. 180-183 ◽  
Author(s):  
Wan Nurul Syaza Wan Nawai ◽  
Norhanida Awang Kasani ◽  
Razif Nordin ◽  
Zainal Arifin Ahmad ◽  
Saidatulakmar Shamsuddin
Keyword(s):  
Mechanical Properties ◽  
Sintering Temperature ◽  
Metal Powders ◽  
Micro Hardness ◽  
X Ray Diffraction ◽  
Rotating Speed ◽  
Microstructure And Mechanical Properties ◽  
Increasing Trend ◽  
Difference Temperature ◽  
Vickers Micro Hardness

The influence of difference sintering temperature: 900°C, 1000°C, 1100°C, 1200°C and 1300°C on the microstructure and mechanical properties of a biomedical Ti–35Nb-2.5Sn-15HA (wt.%) composite was investigated with regard to densification, porosity and hardness. Ti composite process was performed on elemental metal powders by blend the powder mixture at a rotating speed of 200 rpm mixing for 10 min and then sintered with difference temperature. The composites produced were then subjected to the following test: densification, Vickers micro hardness, microstructure by using SEM and X-ray diffraction analysis. Result indicated that the densification and Vickers micro hardness shown a decrease trend with the increasing of temperature due to the increasing trend of porosity up to 73%.

Effects of Sintering Temperature on Microstructure and Properties of Ultrafine WC-VC-NbC-Co Cemented Carbides

2014 ◽  
Vol 926-930 ◽  
pp. 93-97
Author(s):  
Ai Min Jiang ◽  
Xian Quan Jiang ◽  
Zi Peng Zhao ◽  
Rong Yu ◽  
Rong Jie Yang
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Sintering Temperature ◽  
Optical Microscope ◽  
Cemented Carbides ◽  
Vacuum Sintering ◽  
Microstructure And Properties ◽  
Microstructure And Mechanical Properties ◽  
Overall Performance

In this study, Ultrafine WC-VC-NbC-Co was sintered by vacuum sintering at the different sintering temperature. The microstructure and mechanical properties of alloy were analysed by Zeiss optical microscope, SEM-EDS. The results demonstrated that with the increasing sintering temperature, porosity first decreases and then increases, WC grain size enlarges content of η phase decreases. In addition, results reveal the best overall performance was abstained at 1440°C: Density, Vikers hardness, bening were: 14.30g/cm3, 1950HV30, 1787Mpa.

Mechanical Properties of Microwave Sintered 60YSZ-Al2O3/10HAP Bioceramics Composites

2014 ◽  
Vol 627 ◽  
pp. 18-23
Author(s):  
M.R.N. Liyana ◽  
Nur Maizatul Shima Adzali ◽  
W. Rahman ◽  
M.Z.M. Zamzuri ◽  
Harun Azmi
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Microwave Heating ◽  
Sintering Temperature ◽  
Biomedical Application ◽  
Xrd Analysis ◽  
Sintering Process ◽  
X Ray Diffraction ◽  
Processing Times ◽  
Large Particles

Microwave heating technology promising shorter processing times and less energy consumption beneficial for economic perspective with improved properties and better microstructural control. This study focussed on microwave sintered bioceramics material of 60YSZ-Al2O3/10HAP mixture fabricated by powder metallurgy route. The study was conducted based on three different sintering temperatures, starting with 900 °C, 1000°C ended with 1100°C. Mechanical properties of materials such as porosity, density, hardness and compressive strength were then determined for each composites. Results showed that lowest porosity was obtained at 1000°C which promoting to higher density, hardness and compressive strength. However, the increasing sintering temperature up to 1100 °C was initiated the decomposition of HAP and constitutes the formation of CaZrO3determined by X-ray Diffraction (XRD) analysis. Microstructure characterization by Scanning Electron Microscope (SEM) observed the growth of large particles and pores result in excessive grain coarsening. Better sinterability was achieved through an adequate sintering temperature of 1000°C with no reaction reported between HA and ZrO2during the sintering process facilitate by microwave hybrid heating. The pores was found to be interconnected for each composites via microwave heating expected to be useful for biomedical application which was favorable to osteo-integration.

Effect of Particle Size and Vacuum Sintering Temperature on Phase Composition and Mechanical Properties of WC-12 wt% Co Hardmetals

2012 ◽  
Vol 531-532 ◽  
pp. 3-7
Author(s):  
Shih Hsien Chang ◽  
Chung Wei Lee ◽  
Kuo Tsung Huang ◽  
Ming Wei Wu
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Particle Size ◽  
Relative Density ◽  
Sintering Temperature ◽  
Liquid Phase Sintering ◽  
Sintering Process ◽  
Vacuum Sintering ◽  
Brittle Phase ◽  
Effect Of Particle Size

The experimental results indicated that the WC-12wt% Co specimens showed excellent mechanical properties and microstructure by the optimal sintering process. The G5 specimen sintered at 1400°C/1 h achieved a relative density of 98% and a hardness of HRA 88.5. Meanwhile, the TRS increased to 2400 MPa. F12 specimens that sintered at 1350°C/1 h achieved a relative density of 99% and a hardness of HRA 92.5. The TRS was also enhanced to 2170 MPa. In this study, the η phase (Co3W3C) precipitated at a high sintering temperature. The precipitations generated by liquid phase sintering gathered in some specific regions of the specimens and reacted with the WC particles. In addition, Co3W3C was a hard and brittle phase that resulted in a low TRS for the specimens; and a large amount of η phases were detrimental to the fracture toughness of the specimens.

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