Erosion Properties of the Stainless Steel and Cr-Mo Steel in Fluidized Bed Condition

Abstract

The erosion tests were carried out about the MITI SUS304J1HTB and MITI STBA28 used to be utility boiler in the actual boiler-simulated conditions. And the effect of tube materialsand impact velocity of bed material on the erosion properties were considered. The results obtained are as flows.
(1) The higher the velocity of bed material became, the peak of erosion wastage shifted to the less angle side of the circumference of specimen.
(2) In the range of lower temperature on specimen surface, MITI STBA28 had better erosion-resistant than MITI SUS304J1HTB, because of thick oxide formation on MITI STBA28. On the other hand, in the range of higher temperature, the above tendency became reverse, because of separation of oxide on MITI STBA28.