been applied through pvd cvd or pcvd processes preferably in a microwave field during the heating of a precompressed formed body in a microwave field a controlled temperature increase of the sample body can already be achieved at low temperatures at low temperatures of the sintered compact up to approximately 1000 u00b0 c and at low or medium microwave radiation outputs eddy currents play a big part the special characteristics of the microwaves further allow through a simple adjustment of the output and the proper material selection the additional induction of a plasma heating which can be enhanced or inhibited according to need depending on the surface temperature of the sintered compact the plasma heating can be dispensed with in order to prevent the danger of overheating the surface of the sintered compact in this way an evaporation of the metallic components of the sintered compact can be avoided at low temperatures of the sintered compact the process of the invention is based on the use of the so called 34 skin effect 34 in mixtures of electrically conductive individual components depending on the granulation and phase distribution each single particle is heated by an eddy current whereby the volume heated by the microwaves lies within the order of magnitude of the sample volume in this way based on the microstructure of the sintered compact not only a thin boundary layer of the sintered compact is heated but the microwave radiation can penetrate the sample at higher temperatures and especially when minimal amounts of a melting phase are formed the microwave radiation can be directly converted into heat throughout the entire sintered compact due to relaxation processes whereby any desired heating rates are possible it is thereby possible to vary.