Oxidation Resistance of Nano-Reinforced PC-Refractories Modified with Phenol Formaldehyde Resin. Part 4. Thermodynamic Evaluation of Phase Formation Within Mg-O-C-Al, Mg-O-C-Ni and MgO-AlO-NiO-SiO Systems Using SiC + Al + Ni (NiO) Complex Antioxidant.

Autor: Semchenko, G., Borisenko, O., Brazhnik, D., Logvinkov, S., Povshuk, V., Shuteeva, I., Angolenko, L., Chopenko, N., Vasyuk, P.
Předmět:
Zdroj: Refractories & Industrial Ceramics; Nov2017, Vol. 58 Issue 4, p374-384, 11p
Abstrakt: Results are given for the synthesis and co-existence of phases formed from components of complex organic-inorganic antioxidant formed during modification of phenol-formaldehyde resin (PFR) and graphite with silica alkoxide and inorganic or organic nickel precursors. Thermodynamic analysis is given for the Mg-Al-C and Mg-O-Ni-C systems. It is shown that the periclase and carbon can coexist with aluminum and nickel, and also that oxidized antioxidants AlO and NiO can interact respectively with the periclase and with the synthesized SiC formed during modification of PFR with silica. In considering the NiO-MgO-AlO-SiO system it is established that during service noble spinel will be synthesized from the complex antioxidant components, facilitating an increase in PC-refractory durability in service. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index