The demand of industry for new composite and functional materials with preset properties has led to increased investigations into processes which occur in plasma jets of complex chemical composition with an additive to disperse particles as well as at their interaction with hard surfaces under the conditions of superfast cooling of the particles which are in complex aggregation state. This Proceedings Volume contains the papers that were presented during the International Workshop ''High-Temperature Dust-Laden Jets in the Processes of Treatment of Powder Materials'', held in Novosibirsk, USSR, 6--8 September 1988. The scope of the Workshop incorporated the following topics: — Modelling of the processes of interphase momentum, heat and mass transfer in dust-laden plasma jets as well as interaction between the particles which are in complex aggregation state and the base. — Diagnostics of the parameters of gas disperse phases in high-temperature dust-laden flows. — Processes of the formation of plasma sprayed coatings. — Processes of treatment and production of powder materials.