Abstract
A highly stable dispersion of TiN has been produced in Mo by the isothermal heat-treatment in nitrogen of a 1% Ti-Mo alloy in the temperature range 1100°C to 1500°C. The dispersed phase has been studied metallographically, and microhardness traverses made of the diffusion layer. The hardness of the surface layers is approximately doubled, but the microhardness falls on passing inwards from the surface. The results are discussed in terms of the relationship between hardness, particle sizes, and diffusion rates.
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