It discloses a plasma torch abatement device and method of manufacturing the same. Plasma torch abatement device is for the treatment of stream flowing out of the processing tool having a flow outlet, comprises a reaction chamber formed by the reaction chamber wall for receiving the flow and a plasma flow outlet and the reaction chamber wall outlet flow and plasma flow float comprises a composite structure having a Taehwa layer, and the passivation layer facing and that is formed of a passivating material, a composite structure having a base layer formed from a base material surrounding the passivating layer, a passivation material has a lower chemical reactivity than the substrate material for the flow and a plasma flow outlet. In this manner, there is provided a composite or multi-layer reaction chamber having the advantageous properties provided by both of the base layer and the passivation layer, the passivation layer has a greater resistance to flow to flow in and out of outlet, whereby thereby improving the life of the reaction chamber.