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Preparation of Macroporous Epitaxial Quartz Films on Silicon by Chemical Solution Deposition
Published on: December 21, 2015
Quartz: extreme preferred orientation produced by annealing
Science (New York, N.Y.)
|September 22, 1967
Summary
Annealing flint under pressure after hot-working creates a strong c-axis alignment. This orientation, crucial for material properties, is significantly stronger than in unannealed samples.
Area of Science:
- Geology
- Materials Science
Background:
- Flint's mechanical properties are influenced by its crystallographic orientation.
- Understanding preferred crystallographic orientation is key to predicting material behavior.
Purpose of the Study:
- To investigate the effect of annealing under high pressure on flint's crystallographic orientation.
- To compare the orientation strength in annealed versus unannealed samples.
Main Methods:
- Hot-working of flint samples within the beta-quartz stability field.
- Annealing the hot-worked samples under high pressure.
- Deforming identical samples under the same conditions without annealing.
- Analyzing the crystallographic orientation (c-axes) of the samples.
Main Results:
- Annealing under high pressure produced a strong concentration of c-axes parallel to the compression direction.
- Unannealed samples showed a much weaker crystallographic orientation.
- The annealed orientation strength is comparable to the "cube texture" in metals.
Conclusions:
- High-pressure annealing significantly enhances preferred crystallographic orientation in flint.
- This process yields a strong alignment of c-axes, impacting material properties.
- The observed texture is remarkably strong, similar to textures in plastically deformed metals.
