Download e-book for kindle: Refractory Transition Metal Compounds. High Temperature by G. V. Samsonov

By G. V. Samsonov

ISBN-10: 1483228037

ISBN-13: 9781483228037

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Additional info for Refractory Transition Metal Compounds. High Temperature Cermets

Example text

A shift of the Z,T line with r e s p e c t to the Lßi line a g r e e s , within the limits of experimental e r r o r , with the c o r r e sponding shift of the L^ line with respect to the Lai)3 line (Table 2). 5 έ / A v* X *? I 2 ir —* 3 4 5 6 7 8 9 10(*510171/cm3) Fig. 1. Shift of the L^. a line as a function of concentration of antimony impurity atoms. The experimental curve (Fig. 1) is in good agreement with a curve of the form y=kx^. We can, t h e r e f o r e , a s s u m e that t h e r e is a linear relation between Δ£βϋ_αι,3 and Y a.

The s p e c t r a of these hydrides fall entirely into the scheme we have described. The position of the main absorption maximum in the s p e c t r a of vanadium and its hydrides is not constant and is shifted towards s h o r t e r wavelengths as we i n c r e a s e the hydrogen content in the alloy. The maximum value of this shift is about 4 ev. The g r e a t e r number of vanadium hydrides investigated (more than for titanium) enable us to establish m o r e accurately the limits of the hydrogen concentration in t h e s e hydrides.

Separated from the original branch of the K\ line of titanium. An analysis of the curves enables us to draw the following conclusions. Data obtained by means of the fluorescence method is in very good agreement with the r e s u l t s of the preceding paper of one of the authors and verifies the energy position of the emission band of titanium in a hydride and in metallic titanium [14]. The s t r u c t u r e of the Kß5 emission band of titanium in hydrides differs significantly from that of the carbide and the nitride (Fig.

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Refractory Transition Metal Compounds. High Temperature Cermets by G. V. Samsonov


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