Detail of "12070-13-2"

Reference

Electrochemical behavior of dispersed tungsten semicarbide

Electrochemical behavior of dispersed tungsten semicarbide. Tsirlina, G. A.; Petrii, O. A. (Mosk. Univ., Moscow, USSR). Elektrokhimiya, 21(6), 821-5 (Russian) 1985. CODEN: ELKKAX. ISSN: 0424-8570. DOCUMENT TYPE: Journal CA Section: 72 (Electrochemistry) Section cross-reference(s): 67 The mild anodic oxidn. was studied of W2C [12070-13-2] in acid solns., as well as the kinetics of certain electrode processes on W2C samples prepd. in this way. The dispersed W2C was obtained from the powd. elements in an inert atm. Its sp. surface area was ~10 m2/g. Steady-state polarization curves of HCHO [50-00-0] oxidn. from 10% soln. in 1N H2SO4 are presented. The W2C possesses a significant catalytic activity in practically all reactions of the evolution and ionization of H, as well as in the oxidn. of HCHO even at room temp.

Mechanical behavior and electron microscopy analysis of tungsten carbide (W2C)

Mechanical behavior and electron microscopy analysis of tungsten carbide (W2C). Dubois, J.; Epicier, T.; Esnouf, C.; Fantozzi, G. (ERA, INSA, Villeurbanne 69621, Fr.). Sci. Hard Mater., [Proc. Internatinal Conf.], Meeting Date 1981, 201-18. Edited by: Viswanadham, R. K.; Rowcliffe, David J.; Gurland, Joseph. Plenum: New York, N. Y. (English) 1983. CODEN: 50RAAG. DOCUMENT TYPE: Conference CA Section: 57 (Ceramics) The plastic deformation of W2C at 800-2200° was investigated using electron microscopy at 100 kV and 1 MeV and mech. deformation tests. The deformation activation vol. is a little below that of cubic carbides. The internal stress varied more rapidly than the elastic modulus. 12070-13-2 and 7440-44-0 which are cas registry numbers of chemicals are mentioned. Extrapolation of the apparent activation enthalpy as a function of effective stress to temps. <1750° gave an activation enthalpy of 4 eV. Electron microscopic observations indicated that the anisotropy of W2C is not very important; extinction of dislocations was clear enough to identify the Burgers vectors. Measurement of the activation parameters in the mech. tests indicated that C diffusion is the main controlling factor for deformation and agreement of the results with a model proposed by D. J. Rowclifte (1965) and J. L. Martin 1972 is discussed. .