Composite materials designed to function in environments porne to explosions triggered by combustible gases, must be developed and made starting from the physical, mechanical, and structural characteristics specific to their utilisation.

Characteristics such as resistance to mechanical stress, high hardness and toughness consist of a complex set difficult to obtain for the same material; an additional property is necessary, namely the so-called „anti-spark” feature, for materials used in potentially explosive environments.

The paper presents the conclusions drawn from the analysis of the factors that influence the anti-spark characteristics of multilayer composite materials.

The testing of the characteristics of the composite materials made of tungsten carbide were obtained by experiments with samples of material on a special laboratory stand, which confirmed the anti-spark characteristic.

The final confirmation of the characteristics of composite materials was obtained by the successful experimentation, during the production process, of a sub-assembly for the continuous haulage of displaced materials, in a mining unit in a Jiu Valley coal basin.