Abstract: The method of preparing an adhesive layer on a substrate includes introducing a thermally reactive powder comprising aluminum and a second metal into a plasma torch, wherein the thermally reactive powder is substantially free of binder, additive and contaminant and does not contain a significant amount of intermetallic compound into a plasma torch. An exothermic reaction is initiated within the thermally reactive powders in the plasma torch and the exotherming powders impinge onto a substrate, such that the heat generated by the exothermic reaction is generated predominantly on the substrate.

Abstract: An apparatus for cleaning exhaust gases of solid particles comprises a rotational combustion chamber (1), a swirler (2) and a soot collector (3) separated from one another by a separating cavity (7) and located on the same axis downstream the gas flow. A catalytic unit (4) for neutralizing harmful gaseous emissions is arranged coaxially inside the soot collector (3). The apparatus is provided with an inlet pipe (8) and an outlet pipe (9). The swirler is made in the form of an impeller. The unit (4) for neutralizing harmful gaseous emissions is made in the form of a cylindrical body (5) comprising longitudinal channels (6) with a catalytically active internal layer applied-thereto. The longitudinal channels (6) have a curvilinear closed-type shape in their cross-section and the catalytically active layer has the same thickness over the entire internal surface of the longitudinal channels (6), which thickness is uniform both over the cross-section of the unit (4) and throughout its length.