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Chemical reactions in the system Si sub 3 N sub 4 -Nd sub 2 O sub 3 -SiO sub 2 under nonisothermal heating in open air
Journal article

Chemical reactions in the system Si sub 3 N sub 4 -Nd sub 2 O sub 3 -SiO sub 2 under nonisothermal heating in open air

V A Lavrenko, Yury G Gogotsi and K Taut
Izvestiya Akademii Nauk SSSR, Neorganicheskie Materialy, Vol.26(3), pp.545-549
01 Jan 1990

Abstract

Thermal treatment of alpha -Si sub 3 N sub 4 , Nd sub 2 O sub 3 , and SiO sub 2 up to 1450 degrees C results in oxidation of Si sub 3 N sub 4 and formation of SiO sub 2 . The latter reacts with Nd sub 2 O sub 3 , leading to the formation of Nd polysilicates with different compositions. The activation energy of oxidation is determined.

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