True Structure of Molybdenum and Tungsten Single Crystals Grown from the Gas Phase
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH
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It is shown that the morphology, and crystal perfection of single crystals of molybdenum and tungsten obtained by vapor deposition using the thermal decomposition of halides, depends on the supersaturation. The crystals were examined by metallographic investigations and X-rays to determine position, extension, and kind of the disturbances. At lower supersaturations with a given equilibrium form face, disturbances appears regularly in layers and within defined crystallographic positions, which depend on the growth direction in different planes.
- Metallurgy and Metallography