Vaporization of Compounds and Alloys at High Temperatures Part Xxi. Mass Spectrometric Studies of the Vaporization of the Sulphides of Calcium, Strontium and Barium
ثبت نشده
چکیده
CaS, SrS and BaS bsvm bean araporatad and the Tapor analyzed bgr aaaa apeotroaatrj. The following thanoehaalcal data «ara obtained: D^SjP-TTtf; Dl(CaS)-73.m.5; D;(3rS)-74.1±4.5j p;(BaS)-94.7±4.5i AH(dlJB.BaS)-113.9±5i ^H298nv(CaS)-U8.0±5; AH29eTlip(SrS)-U3.0±5; AH298Tap(BaS)-122.5±5; Dl(CaO)-84.A±6; lC(SxO)-92.2±6; Dl(BaO)=130.4±6; D*(SO)-123.5 kcal per sole. Thie technical docueentary report has been reriewed and is approved. V. 0. RAMKE Chief, Cemaics and Graphite Branch Metals and Ceramics Division Air Force Materials laboratory
منابع مشابه
Thermodynamics and Kinetics of Vaporization of Pbs From Complex Cu-Fe Mattes
Thermodynamics and kinetics of vaporization of lead sulfide from typical copper-smelting mattes of commercial interest are investigated in the temperature range 1388 K to 1573 K by vapor transport technique and plasma arc spectroscopy. The total mass of the dominant vaporizing species PbS that leaves the matte is described by the Newman's numerical solution to the second Fick's law combined wit...
متن کاملWADD TR 60-782 PART XXIII VAPORIZATION OF COMPOUNDS AND ALLOYS AT HIGH TEMPERATURES PART XXIII. THERMOCHEMICAL STUDY OF THE GERMANIUM OXIDES USING A MASS SPECTROMETER - THE DISSOCIATION ENERGY OF THE MOLECULE GeO
The mass spectromctnc study of the vaporization of the compounds GeO (hex) and GeO(am) and of the mixture GeO (hex) + Ge(c) made it *Z possible to establish their mode of vaporization: Ge02(hex) GeO(g) + 1/20 (I) n GeO(am) (GeO) (g) (n 1. 2. 3) (II) n n/2 GeOJhex) + n/2 Ge(c) (GeO) (g) (n = 1,2,3) (III) c. n The enthalpies of vaporization are AH° (I) 121. 2± 1.6 kcal/mole AH» (II, n=l) = 53.4 ±...
متن کاملParametric Study of Fuel Vapor Concentration Distribution Due to Vaporization of Fuel Droplets in Free Atmosphere
The growth of a two-phase cloud of a liquid fuel in a stagnant atmosphere is studied using computational fluid dynamic techniques. In order to predict the danger and hazard of such cloud in open atmosphere it is very important to determine the fuel concentration in the cloud, especially in the far field region from the fuel reservoir. The results show that with omission of droplets break up...
متن کاملتاثیر ناخالصی اکسیژن بر روی خواص الکترونی و اپتیکی کالکوژنیدهای کلسیوم، استرانسیوم و باریوم
Electronic and optical properties of calcium, strontium and barium chalcogenide compounds in NaCl structure are studied using the band structure results obtained through the full potential linearized augmented palne wave method. Different linear relationships are observed between theoretical band gap and 1/a2 (where a is lattice constant) for calcium, strontium and barium chalcogenide compounds...
متن کاملStructural, Electrical, and impedance spectroscopy studies of Barium substituted nano calcium ferrites synthesized by solution combustion method.
Barium substituted nanocrystalline ferrites with chemical composition BaxCa1-xFe2O4 (x =0.0 to 0.25) BCAF were prepared by solution combustion method. The phase formation of mixed spinal structured ferrites was confirmed by PXRD analysis. The average crystallite size was calculated using Debye-Scherrer formula and it was found to be in the range of 27-44 nm. Surface morphology was analyzed by S...
متن کامل