Influence of Accidental Impurities on the Spectroscopic and Luminescent Properties of ZnWO Crystal.

Special techniques for deep purification of ZnO and WO have been developed in this work. A ZnWO single crystal has been grown by the Czochralski method using purified ZnO and WO chemicals, along with the ZnWO crystal-etalon, which has been grown at the same conditions using commercially available 5N ZnO and WO chemicals. The actual accidental impurities compositions of both the initial chemicals and the grown crystals have been measured by inductively coupled plasma mass-spectrometry.

Hydrogen Accumulation and Distribution in Pipeline Steel in Intensified Corrosion Conditions.

Hydrogen accumulation and distribution in pipeline steel under conditions of enhanced corrosion has been studied. The XRD analysis, optical spectrometry and uniaxial tension tests reveal that the corrosion environment affects the parameters of the inner and outer surface of the steel pipeline as well as the steel pipeline bulk. The steel surface becomes saturated with hydrogen released as a reaction product during insignificant methane dissociation.