In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 31, No. 10R ( 1992-10-01), p. 3377-
Abstract:
The bonding of magnesium fluorides by hot pressing was studied. A layer of CaF 2 with 2∼3 µm thickness was used as an agent to decrease the bonding temperature and avoid breaching. The main factors that influence the light scattering loss were the cellular growth of MgF 2 films, voids caused by the lattice mismatch due to the interfaces of each layer, voids due to the films, grain growth, and recrystallization zone formation. By contrast, the grain growth of the MgF 2 matrix and CaF 2 films was not the main influence on the scattering loss. Another important factor that influences the scattering loss was the refractive index variations, which are dependent on the composition fluctuations. Measurements of the discontinuities in the concentration-distance profile describing interdiffusion of the components in the binary systems CaF 2 -MgF 2 gave the crystalline solubility limits just below the eutectic temperature and under the 430 kg/cm 2 pressure. These are 17 at.% Ca in MgF 2 at 650°C, 5 h, and discontinuous values over the recrystallization zone at 700°C, 5 h.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.31.3377
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
1992
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
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