A study on corrosion test of TP347H austenic stainless steel has been carried out in a temperature range of 500~600 ℃

simulating the atmosphere and ash deposition on tube-wall of superheaters in biomass-burned boilers.The corrosion dynamic curves have been obtained through mass gain;the appearance

elements content

and composition of corrosion products after corrosion of specimens being analysed by using the scanning electron microscope(SEM) equiped with energy dispersive spectrometer(EDS) and X-ray diffraction(XRD) meter.Test shows that the corrosion rate of TP347H steel with biomass ash deposition is greatly increased compared with that without biomass ash deposition;the TP347H steel with biomass ash deposition is very sensitive to the reaction temperature

the anti-corrosion performance of TP347H steel is gradually decreased with the increase of reaction temperation.