Correlation between synthesis conditions, coherently diffracting domain size and cubic phase stabilization in barium titanate

The Constant Rate Thermal Analysis method has been used under different experimental conditions to obtain barium titanate powder of very small grain size. Both a crystallographic and a dielectric study ham been carried out on samples sintered at different temperatures. It is deduced that the formation of small coherently diffracting domains is improved by the generation of oxygen vacancies and the cubic phase stabilization depends on the coherently diffracting domain size rather than on the particle size.     

Statistical analysis of bend strength data according to different evaluation methods

The strength values obtained in four series of bend tests on two monolithic ceramic materials have been statistically evaluated. Statistical mapping procedures were used to check whether a Weibull distribution fits the strength data. Where this has been found to be the case, the value of the Weibull parameters determined according to different evaluation methods fall within each other's confidence interval. The values of the modulus m and of the characteristic strength σ₀ of the two-parameter distribution can differ significantly from the corresponding values in the three-parameter distribution.     

Generalization of experimental data for forced fluid flow

Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 12, pp. 12–13, December, 1992.     

A cooling process for an NaA type zeolite used in systems to purify argon of oxygen

Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 11, pp. 16–17, November, 1992.     

Finishing and trimming treatment of small parts

Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 5, p. 36, May, 1992.     

Evaporators with hydrophobic heat-transfer agents

Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 10, pp. 8–10, October, 1992.     

The journal Khimicheskoe i Neftyanoe Mashinostroenie is 60 years old

Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 7, pp. 1–2, July, 1992.