Abstract
Gradient crystallization methods have been proposed and studied for creating microstructures which exhibit crystal orientation. For many of these processes it is possible for spurious heterogeneous nucleation and growth to occur from the sample sides and compete with desired oriented growth. We analyze this growth interference effect for two methods of crystallizing in a temperature gradient: either moving up a temperature gradient, or crystallizing in a stationary temperature gradient. It is demonstrated that the up-gradient technique is mainly suited to relatively long, narrow samples (with some restrictions), while the stationary gradient process is preferred when crystallizing normal to the large face of slab shaped samples. Limitations which constrain both of these gradient crystallization techniques are discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 1-9 |
| Number of pages | 9 |
| Journal | Journal of Non-Crystalline Solids |
| Volume | 221 |
| Issue number | 1 |
| Publication status | Published - Nov 1997 |
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ASJC Scopus subject areas
- Ceramics and Composites
- Electronic, Optical and Magnetic Materials
Cite this
Significance of heterogeneous surface growth in up-gradient and stationary-gradient crystallization. / Birnie, Dunbar P; Weinberg, M. C.
In: Journal of Non-Crystalline Solids, Vol. 221, No. 1, 11.1997, p. 1-9.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Significance of heterogeneous surface growth in up-gradient and stationary-gradient crystallization
AU - Birnie, Dunbar P
AU - Weinberg, M. C.
PY - 1997/11
Y1 - 1997/11
N2 - Gradient crystallization methods have been proposed and studied for creating microstructures which exhibit crystal orientation. For many of these processes it is possible for spurious heterogeneous nucleation and growth to occur from the sample sides and compete with desired oriented growth. We analyze this growth interference effect for two methods of crystallizing in a temperature gradient: either moving up a temperature gradient, or crystallizing in a stationary temperature gradient. It is demonstrated that the up-gradient technique is mainly suited to relatively long, narrow samples (with some restrictions), while the stationary gradient process is preferred when crystallizing normal to the large face of slab shaped samples. Limitations which constrain both of these gradient crystallization techniques are discussed.
AB - Gradient crystallization methods have been proposed and studied for creating microstructures which exhibit crystal orientation. For many of these processes it is possible for spurious heterogeneous nucleation and growth to occur from the sample sides and compete with desired oriented growth. We analyze this growth interference effect for two methods of crystallizing in a temperature gradient: either moving up a temperature gradient, or crystallizing in a stationary temperature gradient. It is demonstrated that the up-gradient technique is mainly suited to relatively long, narrow samples (with some restrictions), while the stationary gradient process is preferred when crystallizing normal to the large face of slab shaped samples. Limitations which constrain both of these gradient crystallization techniques are discussed.
UR - http://www.scopus.com/inward/record.url?scp=0031549707&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0031549707&partnerID=8YFLogxK
M3 - Article
VL - 221
SP - 1
EP - 9
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
SN - 0022-3093
IS - 1
ER -