Simulation of the Effect of Sintering Pressure on Microstructure Evolution in Nanocomposite Ceramic Tool Materials

2013 ◽  
Vol 395-396 ◽  
pp. 262-265 ◽  
Author(s):  
Hong Mei Cheng ◽  
Chuan Zhen Huang
Keyword(s):  
Grain Size ◽  
Monte Carlo ◽  
Grain Growth ◽  
Microstructure Evolution ◽  
Growth Process ◽  
Sintering Process ◽  
Ceramic Tool ◽  
Tool Materials ◽  
Mean Grain Size ◽  
The Mean

A Monte Carlo Potts model coupled with sintering pressure for the sintering process of nanocomposite ceramic tool materials is proposed, the relation between grain growth and sintering pressure is presented. The grain growth process at different sintering pressure is investigated in this model, and the effect of sintering pressure on microstructure evolution is discussed, it is found that the mean grain size increases with the increase of sintering pressure during simulation. The results from this simulation are shown to correlate well with the experimental observations.

Simulation of the Effect of Sintering Temperature on Microstructure Evolution in Nanocomposite Ceramic Tool Materials

2013 ◽  
Vol 770 ◽  
pp. 194-197
Author(s):  
Hong Mei Cheng ◽  
Chuan Zhen Huang ◽  
Xiu Ye Wang
Keyword(s):  
Grain Growth ◽  
Microstructure Evolution ◽  
Sintering Temperature ◽  
Sintering Process ◽  
Ceramic Tool ◽  
Tool Materials ◽  
Mean Grain Size ◽  
Higher Temperature ◽  
The Mean ◽  
Simulation Results

A Monte Carlo Potts model coupled with sintering temperature for the sintering process of nanocomposite ceramic tool materials is proposed, the relation between grain growth and sintering temperature is presented. The grain growth process at different sintering temperature is investigated in this model, and the effect of sintering temperature on microstructure evolution is discussed, it is found that the mean grain size increases with the increase of sintering temperature during simulation, and nanoparticles are easier to enter into matrix grains to form intragranular-type microstructure at higher temperature. The simulation results are in accordance with the experimental observations.

Simulation of Microstructure Evolution Coupled with Fabrication Pressure for Two-Phase Ceramic Tool Materials

2010 ◽  
Vol 431-432 ◽  
pp. 138-141
Author(s):  
Chuan Zhen Huang ◽  
Bin Fang ◽  
Chong Hai Xu ◽  
Sheng Sun ◽  
Han Lian Liu
Keyword(s):  
Monte Carlo ◽  
Microstructure Evolution ◽  
Potts Model ◽  
Two Dimensional ◽  
Sintering Process ◽  
Ceramic Tool ◽  
Two Phase ◽  
Tool Materials ◽  
Mean Grain Size ◽  
The Mean

A computer simulation coupled with fabrication pressure for the sintering process of two-phase ceramic tool materials has been developed using a two-dimensional hexagon lattice model mapped from the realistic microstructure. The mean grain size of simulated microstructures by Monte Carlo Potts model integrated with pressure increases with an increase in fabrication pressure, which is consistent with the experiment results. Monte Carlo Potts model coupled with fabrication pressure is suitable for simulating the microstructure evolution at the different fabrication pressure during the fabrication of ceramic tool materials.

Simulation of Fabrication for Single-Phase Al2O3 Ceramic Tool Materials at Different Fabrication Temperature

2010 ◽  
Vol 150-151 ◽  
pp. 1358-1363
Author(s):  
Bin Fang ◽  
Chuan Zhen Huang ◽  
Chong Hai Xu ◽  
Sheng Sun
Keyword(s):  
Mechanical Properties ◽  
Computer Simulation ◽  
Grain Size ◽  
Monte Carlo ◽  
Single Phase ◽  
Two Dimensional ◽  
Ceramic Tool ◽  
Tool Materials ◽  
Mean Grain Size ◽  
The Mean

The fabrication is a key process for the preparation of ceramic tool materials, which governs the mechanical properties of ceramic tool materials under the condition of the same compositions. A computer simulation coupled with fabrication temperature for the hot-pressing process of single-phase ceramic tool materials has been developed using a two-dimensional hexagon lattice model mapped from the realistic microstructure without considering the presence of pores. The fabrication of single-phase Al2O3 is simulated. The mean grain size of simulated microstructure by Monte Carlo Potts model integrated with fabrication temperature increases with an increase in fabrication temperature, which is consistent with the experiment results.

Simulation of Fabrication for Single-Phase Al2O3 Ceramic Tool Materials at Different Fabrication Pressure

2012 ◽  
Vol 499 ◽  
pp. 150-155 ◽  
Author(s):  
Bin Fang ◽  
Chuan Zhen Huang ◽  
Chong Hai Xu ◽  
Sheng Sun
Keyword(s):  
Monte Carlo ◽  
Microstructure Evolution ◽  
Potts Model ◽  
Single Phase ◽  
Two Dimensional ◽  
Ceramic Tool ◽  
Tool Materials ◽  
Mean Grain Size ◽  
The Mean ◽  
The Relationship

The relationship between fabrication pressure and microstructure evolution is proposed. A computer simulation coupled with fabrication pressure for the hot-pressing process of single-phase ceramic tool materials has been developed, which uses a two-dimensional hexagon lattice model mapped from the realistic microstructure without considering the presence of pores. The fabrication of single-phase Al2O3 is simulated. The mean grain size of simulated microstructure by Monte Carlo Potts model integrated with fabrication pressure increases with an increase in fabrication pressure, which is consistent with the experiment results. It is shown that Monte Carlo Potts model coupled with fabrication pressure may simulate the microstructure evolution of single-phase ceramic tool materials.

Simulation of Fabrication for Al2O3 Ceramic Tool Materials

2012 ◽  
Vol 500 ◽  
pp. 537-543 ◽  
Author(s):  
Bin Fang ◽  
Chuan Zhen Huang ◽  
Hong Tao Zhu ◽  
Chong Hai Xu
Keyword(s):  
Grain Size ◽  
Monte Carlo ◽  
Microstructure Evolution ◽  
Potts Model ◽  
Single Phase ◽  
Ceramic Tool ◽  
Tool Materials ◽  
Fabrication Parameters

The new Monte Carlo Potts model that couples with fabrication parameters and considers pores and additives has been developed in order to simulate the fabrication of single-phase ceramics tool materials. The microstructure evolution for single-phase Al2O3 ceramic tool materials is simulated with the different technology parameters. At the same time, the single-phase Al2O3 ceramic tool materials are fabricated with the corresponding technology parameters. The errors of grain size between the simulated and the experimental is 12.1 and18.2%.

Simulation of Microstructure Evolution for Two-Phase Ceramic Tool Materials at Different Duration Time

2010 ◽  
Vol 97-101 ◽  
pp. 3042-3045
Author(s):  
Bin Fang ◽  
Chuan Zhen Huang ◽  
Chong Hai Xu ◽  
Sheng Sun
Keyword(s):  
Two Dimensional ◽  
Sintering Process ◽  
Ceramic Tool ◽  
Two Phase ◽  
Tool Materials ◽  
Duration Time ◽  
Mean Grain Size ◽  
The Mean ◽  
The Relationship ◽  
Simulation Time

A computer simulation of the sintering process of two-phase ceramic tool materials has been developed using a two-dimensional hexagon lattice model mapped from the realistic microstructure. The relationship between simulation time and real duration time has been proposed. The mean grain size of simulated microstructure increases with an increase in simulation time, which is consistent with the experimental results.

Simulation of Microstructure Evolution Coupled with Fabrication Temperature for Two-Phase Ceramic Tool Materials

2010 ◽  
Vol 431-432 ◽  
pp. 134-137
Author(s):  
Bin Fang ◽  
Chuan Zhen Huang ◽  
Chong Hai Xu ◽  
Sheng Sun ◽  
Bin Zou
Keyword(s):  
Computer Simulation ◽  
Microstructure Evolution ◽  
Two Dimensional ◽  
Sintering Process ◽  
Ceramic Tool ◽  
Two Phase ◽  
Tool Materials ◽  
Grain Sizes ◽  
The Mean ◽  
The Relationship

A computer simulation coupled with fabrication temperature for the sintering process of two-phase ceramic tool materials has been developed using a two-dimensional hexagon lattice model mapped from the realistic microstructure. The relationship between fabrication temperature and microstructure evolution is proposed. The mean grain sizes of simulated microstructures by Monte Carlo Potts model integrated with fabrication temperature increase with an increase in fabrication temperature, which is consistent with the experiment results.

Three Dimensional Monte Carlo Simulation of Microstructure Evolution in Presence of Pores for Three-Phase Nano-Composite Ceramic Tool Materials

2012 ◽  
Vol 457-458 ◽  
pp. 1567-1572
Author(s):  
Song Hao ◽  
Chuan Zhen Huang ◽  
Bin Zou ◽  
Jun Wang ◽  
Han Lian Liu ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Grain Growth ◽  
Microstructure Evolution ◽  
Three Dimensional ◽  
Composite Ceramic ◽  
Ceramic Tool ◽  
Nano Composite ◽  
Free System ◽  
Tool Materials ◽  
Three Phase

A new three-dimensional Monte Carlo (MC) model in presence of pores of microstructure evolution for three-phase nano-composite ceramic tool materials is successfully established to simulate the grain growth during sintering process in this paper. The defect-free microstructure evolution and microstructure evolution in presence of pore are simulated and investigated. The results show that the new MC model can well simulate the grain growth and pores shrinkage during densification process. Compared with defect-free system, the grain growth velocity can be slow down obviously owning to the existence of pores.

scholarly journals Increasing the mean grain size in copper films and features

2008 ◽  
Vol 23 (3) ◽  
pp. 642-662 ◽  
Author(s):  
K. Vanstreels ◽  
S.H. Brongersma ◽  
Zs. Tokei ◽  
L. Carbonell ◽  
W. De Ceuninck ◽  
...  
Keyword(s):  
Grain Size ◽  
Grain Growth ◽  
Driving Forces ◽  
Texture Evolution ◽  
Deposition Process ◽  
Interface Energy ◽  
Growth Mode ◽  
Copper Films ◽  
Mean Grain Size ◽  
The Mean

A new grain-growth mode is observed in thick sputtered copper films. This new grain-growth mode, also referred to in this work as super secondary grain growth (SSGG) leads to highly concentric grain growth with grain diameters of many tens of micrometers, and drives the system toward a {100} texture. The appearance, growth dynamics, final grain size, and self-annealing time of this new grain-growth mode strongly depends on the applied bias voltage during deposition of these sputtered films, the film thickness, the post-deposition annealing temperature, and the properties of the copper diffusion barrier layers used in this work. Moreover, a clear rivalry between this new growth mode and the regularly observed secondary grain-growth mode in sputtered copper films was found. The microstructure and texture evolution in these films is explained in terms of surface/interface energy and strain-energy density minimizing driving forces, where the latter seems to be an important driving force for the observed new growth mode. By combining these sputtered copper films with electrochemically deposited (ECD) copper films of different thickness, the SSGG growth mode could also be introduced in ECD copper, but this led to a reduced final SSGG grain size for thicker ECD films. The knowledge about the thin-film level is used to also implement this new growth mode in small copper features by slightly modifying the standard deposition process. It is shown that the SSGG growth mode can be introduced in narrow structures, but optimizations are still necessary to further increase the mean grain size in features.

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