The Effect of the Ceramic Dispersion on the Nickel Matrix Composite Coating Properties after Plastic Working
The paper presents the effect of dispersion phase of Al2O3 on selected potential properties of composite coatings on the nickel base. Coatings of Ni-Al-Al2O3 were applied on the steel specimens using the subsonic process of flame spraying. The specimens were then subjected to both cold and hot plastic working by rolling and also cold pressing by the hydraulic press. Plastic working is an alternative to machining, as the method of finishing of coats applied by flame spraying. The paper presents the findings of the research into the possibility of using plastic working (hot and cold rolling and pressing) to obtain the selected properties of the flame sprayed Ni-Al alloy coatings and Ni-Al-Al2O3 composite coatings. The alloy coatings had a single-phase structure, namely boundary solution α , of the maximum 10% aluminium solubility in the crystal lattice of nickel, whereas in the composite coatings the volume content of non-metallic material Al2O3 was: 0, 15, and 30 %.
Zdzislaw Gosiewski and Zbigniew Kulesza
T. C. Dyl et al., "The Effect of the Ceramic Dispersion on the Nickel Matrix Composite Coating Properties after Plastic Working", Solid State Phenomena, Vols. 147-149, pp. 813-818, 2009