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molybdenum rods hot isostatic pressing

Molybdenum rods hot isostatic pressing and sintering, good densification degree and the organizational differences mainly depends on the densification mechanism. Sintering is mainly diffusion. Along the grain of the atomic diffusion loss and the early days of sintering, sinter increases neck, open hole into silent hole and tend to be spherical.

Volume diffusion is actually inside the pore space of migration. Pore surface vacancy density and steam is inversely proportional to the diameter, the size of the pore surface vacancy density gradient within the existence of the space from small to big pore diffusion pore surface, and then spread to grain boundary and table (bar the cause of the high density of edge), the more goods and further reduce the grain growth of grain boundary migration make small holes through them. Due to the decrease of grain boundary, it is a dong, left over from the big pore.

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