Technological methods for science intensive product life increase

The analysis of results of technological impact research upon operation characteristics of science intensive products and the ways to increase parts life of a hot area in aircraft and rocket jet engines is shown. It is shown that the basic factor of promising products for life increase consists in thermal-insulation increase and cooling jet nozzles and combustion chambers. For this the investigations are carried out for new heat-resistant material and protective coating development.

Digital technologies in detecting inhomogeneous concentration zones in heat-resistant nickel alloys structure, including those obtained by selective laser melting

This work presents the experimental data obtained using an integrated approach in the study of the chemical, crystallographic and morphological homogeneity of the structure of a heat-resistant material on a nickel base with carbide-intermetallic hardening and an increased content of the γ-phase, synthesized on single-crystal substrates of various compositions with CHO <001> in Z-direction. Using the proposed method for studying the capabilities and certification of different-level structural structures of samples in the initial state and after thermal study of the impact. The analysis was carried out using the system for EBSD analysis integrated into the scanning electron microscope and the software package for the analysis of electron microscopic images.

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Assessment of Heat Resistant Concrete of Magnesia-Phosphate

In this paper, we choose heat resistant material wollastonite and corundum to get the concrete which has heat resistance up to 600 centigrade. SEM reveals that at the temperature of 400 centigrade and 600 centigrade, the material is very dense. But when the temperature gets 800 centigrade and 1000 centigrade, the SEM reveals cracks. The refractory concrete made by magnesium potassium phosphate as the binder and wollastonite and corundum as aggregate has short setting time, early strength and rapid hardening. And it is suitable for emergency repair materials for the kiln.