Research on the Hot Pressing Parameters of Ti (C,N)/Al2O3 Nanocomposite Ceramic Die Material and the Material Fabrication

2013 ◽  
Vol 589-590 ◽  
pp. 594-599
Author(s):  
Guang Chun Xiao ◽  
Chong Hai Xu ◽  
Zhao Qiang Chen ◽  
Bin Fang ◽  
Gao Feng Wei
Keyword(s):  
Hot Pressing ◽  
Transgranular Fracture ◽  
Sintering Process ◽  
Time Duration ◽  
Microstructural Morphology ◽  
Die Material ◽  
Material Fabrication ◽  
Hot Press Sintering ◽  
Technology Effects ◽  
Pressing Technology

In the present study, Ti (C,N)/Al2O3nanocomposite ceramic die material was fabricated through adding nanosize Ti (C,N) powders into micrometer Al2O3matrix by vacuum hot-pressing technology. Effects of the hot press sintering process on mechanical property and microstructure of the nanocomposite ceramic die material were investigated. The optimum hot-pressing technology with the sintering temperature of 1650°C, time duration of 15min and pressure of 30MPa was achieved. The microstructural morphology of the material was also analyzed. It reveals that the intergranular/intragranular microstructure and the resulted intergranular/transgranular fracture mode are the main causes for strengthening and toughening in the nanocomposite ceramic die material.

Effect of Hot Pressing Technology on the Microstructure and Mechanical Properties of ZrO2 Nano-Composite Ceramic Tool and Die Material

2011 ◽  
Vol 686 ◽  
pp. 396-400
Author(s):  
Ming Dong Yi ◽  
Chong Hai Xu ◽  
Jing Jie Zhang ◽  
Zhen Yu Jiang
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Flexural Strength ◽  
Fracture Mode ◽  
Hot Pressing ◽  
Composite Ceramic ◽  
Ceramic Tool ◽  
Nano Composite ◽  
Die Material ◽  
Pressing Technology

A new nano-composite ceramic tool and die material was prepared by vacuum hot pressing technique. The effect of hot pressing technology on the microstructure and mechanical properties of ZrO2nano-composite ceramic tool and die material was investigated systemically, and the ceramic tool and die material with good mechanical properties was fabricated successfully. Results show that, the highest flexural strength, fracture toughness and hardness of ZrO2nano-composite ceramic tool and die material reaches 1055 MPa, 10.57 MPa∙m1/2 and 13.59 GPa, respectively by means of the vacuum hot pressing technique at 1430 °C for 60min at 35MPa. The flexural strength and fracture toughness has been improved greatly by the optimization of hot pressing technology. In the materials, the optimum sinter process could ensure the t-ZrO2stabilized till room temperature that can enhance the toughening effect of ZrO2. The microstructure of ZrO2nano-composite ceramic tool and die materials were improved by the optimization of hot pressing technology, and the fracture mode is the typical mixed trans/inter-granular fracture mode.

scholarly journals Study on the Influence of the New Type of Powder Metallurgy Ti-Al-Nb Alloy Hot Press Sintering Process on the Microstructure

2021 ◽  
Vol 299 ◽  
pp. 03010
Author(s):  
Shuang Fang ◽  
Mincong Zhang ◽  
Qiuying Yu ◽  
Huaping Xiong
Keyword(s):  
Hot Pressing ◽  
Room Temperature ◽  
Raw Material ◽  
Sintering Process ◽  
Hot Press ◽  
New Type ◽  
Hot Pressing Sintering ◽  
Hot Press Sintering ◽  
Kinetics Of ◽  
Material Powder

Based on the hot-pressing sintering process, the kinetics of hot-pressing sintering crystal grain growth and the hot-pressing sintering densification kinetics, the mixing ratio of the raw material powder and the hot-pressing sintering system are designed. The pressure is maintained at 30 MPa from the temperature rise to the end of the sintering process, and wait until the temperature reaches the corresponding hot pressing sintering temperature (1200°C~1400°C), keep the corresponding time for 1.5h~4.5h, stop heating and depressurize, and the alloy billet is cooled to room temperature with the furnace. The main phases of Ti2AlNb powder and hot pressing sintering process are TiAl and Ti3Al.

Influences of Sintering Process on the Microstructure and Mechanical Behavior of ZrO2 Nano-Composite Ceramic Tool and Die Material

2010 ◽  
Vol 154-155 ◽  
pp. 1356-1360 ◽  
Author(s):  
Ming Dong Yi ◽  
Chong Hai Xu ◽  
Jing Jie Zhang ◽  
Zhen Yu Jiang
Keyword(s):  
Mechanical Properties ◽  
Ceramic Material ◽  
Composite Ceramic ◽  
Sintering Process ◽  
Ceramic Tool ◽  
Nano Composite ◽  
Pure Zro2 ◽  
Die Materials ◽  
Die Material ◽  
Composite Ceramic Material

A new ZrO2 nano-composite ceramic tool and die material was prepared with vacuum hot pressing technique. The effects of sintering parameters on the nano-composite ceramic tool and die materials were studied. The results indicated that the mechanical properties of ZrO2 nano-composite ceramic tool and die material with the additions of TiB2 and Al2O3 are higher than that of the pure ZrO2 ceramic material. Sintering at 1100 for 120min could improve the density and mechanical properties of ZrO2 nano-composite ceramic material. The flexural strength, fracture toughness and hardness with the optimum sintering parameters can reach 878MPa, 9.54MPa•m1/2 and 13.48GPa, respectively, obviously higher than that with non-optimum sintering parameters.

Characterization of Air-Gap Sealing with Organic Dielectric Using Spin-Coating Film Transfer and Hot-Pressing Technology

2007 ◽  
Vol 46 (12) ◽  
pp. 7678-7683
Author(s):  
Norio Sato ◽  
Katsuyuki Machida ◽  
Hiromu Ishii ◽  
Yoji Ishimura ◽  
Hidenori Saito ◽  
...  
Keyword(s):  
Spin Coating ◽  
Hot Pressing ◽  
Air Gap ◽  
Coating Film ◽  
Film Transfer ◽  
Organic Dielectric ◽  
Pressing Technology

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.

Hot pressing technology investigation of light-weight wooden brick

2020 ◽  
Vol 265 ◽  
pp. 120426
Author(s):  
Meng Wang ◽  
Min Zhang ◽  
Zeguang Lu ◽  
Wanda Jia
Keyword(s):  
Hot Pressing ◽  
Light Weight ◽  
Pressing Technology

Study on Hot-Pressing Technology of Cement Bamboo Particleboard

2010 ◽  
Vol 168-170 ◽  
pp. 1233-1237
Author(s):  
Xin Gong Li ◽  
Xia Zheng ◽  
Yi Qiang Wu
Keyword(s):  
Hot Pressing ◽  
Variance Analysis ◽  
Technological Parameters ◽  
Pressing Temperature ◽  
Board Density ◽  
Regressive Analysis ◽  
Pressing Technology

The hot-pressing technology of cement bamboo particleboard was studied by changing hot-pressing temperature, adhesive/bamboo ratio, board density and additives amount of NaHCO3. Then variance analysis and regressive analysis were conducted on technological parameters. The results indicated that the optimizing technology parameters of cement bamboo particleboard are hot-pressing temperature 130 , adhesive/bamboo ratio 2.8, additives amount of NaHCO310%, boardl density 1.2g/cm3.

scholarly journals Influence of the Uniaxial Hot-Pressing Sintering Condition on Bi4Ge3O12 Ceramic Scintillators

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Ivus L. O. Matos ◽  
Adriano B. Andrade ◽  
Zélia S. Macedo ◽  
Mário E. G. Valerio
Keyword(s):  
Hot Pressing ◽  
Applied Pressure ◽  
Emission Spectra ◽  
Secondary Phase ◽  
Sintering Process ◽  
X Ray Diffraction ◽  
X Ray ◽  
Characteristic Emission ◽  
Hot Pressing Sintering ◽  
Sintering Condition

The production of high-density bismuth germanate (Bi3Ge4O12) ceramic scintillators by uniaxial hot pressing was investigated as a function of different applied pressure conditions. The X-ray diffraction showed that the sintering process was able to eliminate the undesirable secondary phase present in the nonsintered samples. The height changes from samples with higher applied pressure rate and applied pressure duration lead to a better relative density value, >95% for samples sintered under a pressure of 0.14 and 0.18 MPa. The radioluminescence results showed that all samples have the characteristic emission spectra of Bi3Ge4O12 and that the hot-pressed samples have higher radioluminescence emission efficiency.

Optimization of the Hot Pressing Parameters of Nanocomposite Ceramic Tool and Die Materials: I. with BP Neural Network Method

2010 ◽  
Vol 154-155 ◽  
pp. 1114-1118
Author(s):  
Jing Jie Zhang ◽  
Chong Hai Xu ◽  
Ming Dong Yi ◽  
Hui Fa Zhang ◽  
Xing Hai Wang
Keyword(s):  
Neural Network ◽  
Hot Pressing ◽  
Back Propagation ◽  
Back Propagation Neural Network ◽  
Ceramic Tool ◽  
Network Method ◽  
Die Materials ◽  
Die Material ◽  
Set Up ◽  
The Relationship

In this paper, back propagation neural network was used in the optimum design of the hot pressing parameters of an advanced ZrO2/TiB2/Al2O3 nanocomposite ceramic tool and die material. The BP algorithm could set up the relationship well between the hot pressing parameters and mechanical property of nanocomposite ceramic tool and die materials. After analyzed the predicted results, the best predicted results were the sintering temperature was 1420°C and the holding time was 60min. Under these hot pressing parameters, the best flexural strength and the best fracture toughness of the material could be obtained.

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