Formation of Thick Immersion Coatings and Residual Stress Evaluation in the System ZrB-ZrO: Experimental and Numerical Investigation.

The combination of various oxide ceramics in layered and functionally graded composites allows for the development of novel materials, including for high-temperature applications. This study demonstrates the possibility of obtaining a thick ZrO-based coating on a ZrB-SiC ceramic substrate by the immersion method. For better wettability, the porous ZrB-SiC substrate is treated with cold plasma without changing the structure and phase composition of the surface.

Numerical simulation of roof cavings in several Kuzbass mines using finite-difference continuum damage mechanics approach.

An essential stage of mine design is an estimation of the steps of the first and periodic roof caving in longwall mines. Generally, this is carried out using the field experience and can be much enhanced by numerical simulation. In this work, the finite-difference method was applied coupled with the continuum damage mechanics (CDM) approach to simulate the stress-strain evolution of the rock mass with the underground opening during coal extraction.