Abstract
The effect of preliminary heat treatment (PHT) of hydrated cellulose fibers impregnated with an ammonium tetraborate solution on the composition and structure of nitrided products was studied. The PHT conditions which upon subsequent nitriding led to the formation of C—BN fibers with a coating of BN, and also hollow and solid BN fibers, were determined
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References
R. T. Paine and C. K. Narula, “Synthetic routes to boron nitride”,Chem. Rev.,90, No. 1, 73–91 (1990).
J. Economy and R. Lin, “Boron nitride fibers”, inBoron and Refractory Borides, Springer Verlag, Berlin, Heidelberg, New York (1974), pp. 552–554.
Claim 64–124625, Japan, “Preparation of fibrous BN” Publ. May 17, 1989.
Claim 2–74614, Japan, “Preparation of high-strength BN fibers”, Publ. March 12, 1990.
T. S. Bartnitskaya, M. V. Vlasova, T. Ya. Kosolapova, et al., “Formation of boron nitride by the carbothermic reduction of boron oxide”,Poroshk. Metall., No. 12, 55–60 (1990).
T. S. Bartnitskaya, V. I. Lyashenko, A. V. Kurdyumov, et al., “Effect of lithia on the formation of a graphite-like boron nitride structure during carbothermic synthesis”,Poroshk. Metall., Nos. 7–8, 1–8 (1994).
T. S. Barnitskaya, N. F. Ostrovskaya, T. M. Ul'yanova, and B. V. Fenochka, “Preparation of boron nitride fibers by the use of hydrated cellulose. I. Nature of decomposition of hydrated cellulose impregnated with boron-containing compounds”,Poroshk. Metall., Nos. 3–4, 46–51 (1999).
T. S. Barnitskaya, A. V. Kurdyumov, V. I. Lyashenko, et al., “Catalytic synthesis of carbon-like boron nitride”,Poroshk. Metall., Nos. 5–6, 91–96 (1996).
V. P. Sosedov and E. F. Chalykh,Graphitization of Carbonaceous Materials [in Russian], Metallurgiya, Moscow (1987).
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Institute for Problems of Materials Science, Ukraine National Academy of Sciences, Kiev. Translated from Poroshkovaya Metallurgiya, Nos. 5–6(407), pp. 30–36, May–June, 1999.
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Bartnitskaya, T.S., Ostrovskaya, N.F., Vereshchaka, V.M. et al. Preparation of boron nitride fibers with the use of hydrated cellulose. II. Nitriding hydrated cellulose fibers impregnated with ammonium borate. Powder Metall Met Ceram 38, 240–245 (1999). https://doi.org/10.1007/BF02675769
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DOI: https://doi.org/10.1007/BF02675769