Abstract
Alloys ZhS32 and ZhS36 with heat-protection coatings (HPC) consisting of external ceramic layers and internal refractory metallic layers are studied. The coated alloys are tested for heat fastness and high-temperature strength at 1100 – 1150°C. The HPC with a metallic layer of the (Ni – Cr – Al – Hf) + Al system are shown to be more advantageous than similar HPC based on an SPD-2 + VSDP-16 commercial refractory coating. The effect of the HPC on the characteristics of high-temperature strength and fatigue resistance of alloys ZhS32 and ZhS36 is investigated.
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