Conclusions
-
1.
A study of the reactions of silicon nitride and oxynitride with acids, mixtures of acids, and alkali metal hydroxides (solutions and melts) has shown that silicon oxynitride is less stable as a chemical compound than silicon nitride.
-
2.
In phosphoric acid, silicon oxynitride decomposes with the formation of the soluble silicyl metaphosphate and ammonium phosphates. On heating, the soluble silicyl metaphosphate is precipitated out of a phosphoric acid solution as a sparingly soluble compound of composition Si3(PO4)4. The addition of tripotassium phosphate to phosphoric acid accelerates the decomposition of silicon oxynitride.
-
3.
A study was made of the reactions of silicon oxynitride and nitride with aqueous solutions of sodium hydroxide. It was established that 1% sodium hydroxide solution decomposes silicon oxynitride at a constant rate, but has no effect upon silicon nitride.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Literature cited
N. I. Krasotkina, Ogneupory, No. 6 (1967).
O. Glemser, K. Beltz, and R. Naumann, Z. Anorg. Allgem. Chem.,291, 51 (1957).
V. F. Funke and G. V. Samsonov, Zh. Obshch. Khim.,28, No. 1, 267 (1958).
I. S. Brokhin and V. F. Funke, Ogneupory,22, No. 12 (1957).
G. V. Samsonov et al., Analysis of Refractory Compounds [in Russian], Gos. Nauchno-Tekhn. Izd-vo Lit. po Chernoi i Tsvetnoi Metallurgii, Moscow (1962).
I. M. Kuleshov, Zh. Prikl. Khim.,4, No. 2, 488 (1959).
M. Billy, Ann. Chim.,4, 795 (1959).
G. Collins and K. Gerby, J. Metals,7, 612 (1955).
G. V. Samsonov, Nitrides [in Russian], Naukova Dumka, Kiev (1969).
G. V. Samsonov, Nonmetallic Nitrides [in Russian], Metallurgiya, Moscow (1969).
W. Gelder and V. E. Hauser, J. Electrochem. Soc.,114, No. 8, 869 (1967).
D. M. Brown, P. V. Gray, F. K. Heumann, et al., J. Electrochem. Soc.,115, No. 3, 311 (1968).
V. V. Voskoboinikov, L. I. Rabinovich, and S. M. Repinskii, Izv. Akad. Nauk SSSR, Neorgan. Mat.,9, No. 10, 1831 (1973).
I. Ya. Guzman, T. N. Purusova, et al., Ogneupory, No. 3 (1970).
T. N. Zabruskova, Abstract of Candidate's Dissertation, D. I. Mendeleev, Moscow Chemical Technology Institute, Moscow (1971).
T. N. Zabruskova, I. Ya. Guzman, et al., Ogneupory, No. 4 (1971).
I. Ya. Guzman et al., Ogneupory, No. 10 (1972).
G. M. Gaevoi, M. E. Zhabotinskii, Yu. N. Krasilov, et al., Izv. Akad. Nauk SSSR, Neorgan. Mat.,5, No. 4, 691 (1969).
L. V. Kubasova, Usp. Khim., No. 1 (1971).
Author information
Authors and Affiliations
Additional information
Translated from Poroshkovaya Metallurgiya, No. 10 (154), pp. 38–43, October, 1975.
Rights and permissions
About this article
Cite this article
Kopylova, V.P., Nazarchuk, T.N. Chemical stability of silicon nitride and oxynitride powders. Powder Metall Met Ceram 14, 812–816 (1975). https://doi.org/10.1007/BF00790816
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00790816