Effect of powder characteristics on the {alpha}-TO-{beta} Si{sub 3}N{sub 4} transformation kinetics
{beta}-phase nucleation and growth is an important step in the microstructure development of Si{sub 3}N{sub 4} ceramics. Samples containing different powder types, sintering additives and {alpha}/{beta} ratios were heated at intermediate temperatures and times to monitor the phase changes taking place. The rate of transformation was mainly dependent on the powder surface area and starting {beta}-content. It was observed that additions of {beta}-Si{sub 3}N{sub 4} increased the rate of transformation.
- Research Organization:
- Oak Ridge National Lab., TN (United States)
- Sponsoring Organization:
- USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States)
- DOE Contract Number:
- AC05-96OR22464
- OSTI ID:
- 463657
- Report Number(s):
- CONF-970111--11; ON: DE97004728
- Country of Publication:
- United States
- Language:
- English
Similar Records
Kinetics of in-situ {alpha} to {beta} Si{sub 3}N{sub 4} transformation in a barium aluminosilicate matrix
Grain growth kinetics of Si[sub 3]N[sub 4] during [alpha]/[beta]-transformation
Preparation of the rod-like {beta}-Si{sub 3}N{sub 4} particles favoring the self-reinforcing Si{sub 3}N{sub 4} ceramics
Journal Article
·
Mon May 01 00:00:00 EDT 1995
· Scripta Metallurgica et Materialia
·
OSTI ID:64366
Grain growth kinetics of Si[sub 3]N[sub 4] during [alpha]/[beta]-transformation
Journal Article
·
Fri Oct 01 00:00:00 EDT 1993
· Acta Metallurgica et Materialia; (United States)
·
OSTI ID:5993751
Preparation of the rod-like {beta}-Si{sub 3}N{sub 4} particles favoring the self-reinforcing Si{sub 3}N{sub 4} ceramics
Journal Article
·
Sun Mar 23 23:00:00 EST 2003
· Materials Research Bulletin
·
OSTI ID:20884662