Nickel-based superalloys are used in gas turbines due to their mechanical properties at high
temperatures. Increasing demand for higher efficient engines has led to the development of …

In harsh working environments where there can be very high temperatures and heavy loads,
like in the inside of the combustion chamber of a rocket, industrial gas turbines, space …

Laboratory experiments were carried out to study the effect of a MgO–CaO–ZrO 2-based
refractory (MCZ refractory) on the cleanliness of a K4169 Ni-based superalloy. The chemical …

Oxidation resistance of Ni-base single crystal superalloy is substantially improved when
melted using a CaO crucible compared to that melted using an Al 2 O 3 crucible. In order to …

Abstracts Calcia refractory exhibits considerable potential owing to its capacity to purify
melts. This work analyzes different purity calcia for their microstructure, crystal size …

Controlling oxygen (O) diffusion is critical to materials synthesis, materials degradation, and
their oxidation and hot corrosion protection. Herein we investigate O diffusion in dilute Ni …

Desulfurization phenomenon of Ni-base superalloy using a solid CaO was identified by
adjusting the temperature of melt. Ni-base superalloy and NiS powder were heated together …

Details of the desulfurization for molten Ni-base superalloys containing Al using solid CaO
have been investigated, and the formula that explains the reaction rate has been developed …

MgO refractories extensively applied in melting nickel-based superalloys are limited by their
poor thermal shock resistance and susceptibility to melt erosion. This study regulated the …

Melting the ingot or alloy using a CaO crucible is a method known to substantially improve
the oxidation resistance of superalloys. But the mechanism is unclear due to the lack of …