HEAT CONTENT AND HEAT CAPACITIES IN THE SYSTEM TITANIUM-SILICON

Journal Article · Sat Aug 01 04:00:00 EDT 1959 · Zhur. Fiz. Khim.

OSTI ID:4217348

Golutvin, Yu M

The heat content of the silicides TiSi/sub 2/, TiSi, and Ti/sub 5/Si/sub 3/ and of metallic titanium were determined in a massive calorimeter by the mixing method. After differentiating the heat content equations, expressions were obtained for the heat capacities as a function of the temperaturei TiSi/sub 2/: C/sub p/ = 14.94 + 8.32 x 10/sup -3/ T -0.455 x 10/sup 6/ T/sup -2/ cal/ (deg.mole); (298 to 1180 deg K, plus or minus 1.9%); TiSi: C/sub p/ = 15.43 -- 0.8832 x 10/sup 6/T/sup -2/ cal/(deg.mole); (298 to 1350 deg K, plus or minus 1.8%); Ti/sub 5/Si/sub 3/: C/sub p/ = 58.22 plus or minus 5.742 x 10/sup -3/ T - 2.646 x 10/sup 6/T/sup -2/ cal/(deg.mole); (298 to 1170 deg K, plus or minus 3.0%); alpha -Ti: C/sub p/ = 8.641 + 1.405 x 10/sup -4/ T0.3467 x 10/sup 6/T/sup -2/ cal/(deg.g.atom); (298 to 1155 deg K, plus or minus 1.6%); and beta -Ti i C/ sub p/ = 7.968 cal/deg.g.atom; (1155 to 1400 deg K, plus or minus 0.8%). The heat of the transition alpha -Ti yields - beta -Ti was found to be: DELTA H/ sub 1155/ = +820 plus or minus 20 ( plus or minus 2.4%) cal/g.atom. Using the data of the present work and the values for the heats of formation of silicides previously measured, the temperature dependences of the heat effects were calculated. (auth)

• Research Organization: Baikov Inst. of Metallurgy, Academy of Sciences, S.S.S.R.
• NSA Number: NSA-13-020256
• OSTI ID: 4217348
• Journal Information: Zhur. Fiz. Khim., Journal Name: Zhur. Fiz. Khim. Vol. Vol: 33
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ALLOTROPY
CALORIMETERS
EQUATIONS
METALLURGY AND CERAMICS
MIXING
NUMERICALS
QUANTITATIVE ANALYSIS
SILICIDES
SPECIFIC HEAT
TEMPERATURE
TITANIUM
TITANIUM COMPOUNDS
TITANIUM-ALPHA
TITANIUM-BETA