In the report we discuss the experimental results of powerful plasma-flow interactions with aluminum, graphite and stainless steel targets. The experiments were done with magnetized and non-magnetized plasma flows. The plasma flow was generated by a quasistationary plasma accelerator (QSPA). The feature of the experiments is that the research was made at effect on target of high power and long-time duration flows. Such flows give the possibility to simulate the long-time disruptions in ITER. The formation and structure of the shielding layer were investigated by space and time resolution measurements of spectrum. The erosion depth was measured by loss of target weight.