Published February 2009 | Version v1
Journal article Metadata-only

Finite Element Analysis of Convection in Growth Cell for Diamond Growth Using Ni-Based Solvent

Creators

  • 1. State Key Lab of Superhard Materials, Jilin University, Changchun 130012 (China)
  • 2. Henan Polytechnic University, Jiaozuo 454000 (China)
  • 3. Changchun University of Science and Technology, Changchun 130012 (China)

Description

Thermal-electrical-fluid coupled finite element analyses are performed in the model of the growth cell in a high- pressure and high-temperature (HPHT) cubic apparatus in which the large diamond crystal can be grown by using Ni-based solvent with temperature gradient method (TGM). The convection in the Ni-based solvent with different thicknesses at 1700–1800K is simulated by finite element method (FEM). The experiments of diamond crystal growth are also carried out by using Ni-based solvent at 5.7GPa and 1700–1800K in a China-type cubic high pressure apparatus (CHPA). The simulation results show that the Rayleigh number in the solvent is enhanced obviously with the increasing solvent thickness. Good quality diamond single crystal cannot be grown if the Rayleigh number in the solvent is too high

Availability note (English)

Available from http://dx.doi.org/10.1088/0256-307X/26/2/028104

Additional details

Identifiers

DOI
10.1088/0256-307X/26/2/028104;

Publishing Information

Journal Title
Chinese Physics Letters
Journal Volume
26
Journal Issue
2
Journal Page Range
[3 p.]
ISSN
0256-307X
CODEN
CPLEEU

INIS

Country of Publication
China
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
44124127
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
CONVECTION; CRYSTAL GROWTH; DIAMONDS; FINITE ELEMENT METHOD; FLUIDS; MONOCRYSTALS; NICKEL COMPOUNDS; PRESSURE DEPENDENCE; RAYLEIGH NUMBER; SOLVENTS; TEMPERATURE DEPENDENCE; TEMPERATURE GRADIENTS
Descriptors DEC
CALCULATION METHODS; CARBON; CRYSTALS; DIMENSIONLESS NUMBERS; ELEMENTS; ENERGY TRANSFER; HEAT TRANSFER; MASS TRANSFER; MATHEMATICAL SOLUTIONS; MINERALS; NONMETALS; NUMERICAL SOLUTION; TRANSITION ELEMENT COMPOUNDS