Experimental Study of Mechanical Characteristics of Cobalt-Rich Crusts Under Different Temperatures

摘要

Experimental study of mechanical characteristics of Cobalt-Rich Crusts was conducted by MTS_815 rock mechanical testing system and MTS615 environmental chamber under temperatures of 0-150 DEG C. The relationships between temperature and peak force, peak strain, elastic modulus and other parameters are analyzed systematically. Results show that there are different mechanical properties for Cobalt-Rich Crusts under different temperatures. With the increasing of temperature, the peak force and peak strain also are gradually reduced, and the changing amplitude is not a strict linear relationship, with the changing of temperature, the amplitude of the changing is or more or less nonlinear. When the temperature is 0 or 25 DEG C, the elastic modulus of Cobalt-Rich Crusts is nearly equal, but when the temperature changes from 25 to 150 DEG C, the elastic modulus increases with the increasing of temperature. Therefore, the researchingwork can provide a new idea for deep-sea mining engineering, and also be a theoretical basis for deep-sea mining.