18.97.14.84
18.97.14.84
close menu
SCIE SCOPUS
플라즈마 회전전극법에 의한 STS 304 및 STS 316 스테인리스강 분말의 제조 및 분말특성 연구
Production and Characterization of Type 304 and Type 316 Stainless Steel Powders by Plasma Rotating Electrode Process
최국선(Good Sun Choi), 이동희(Dong Hi Lee)
UCI I410-ECN-0102-2008-580-001844750

The plasma rotating electrode process was applied to the production of type 304 and 316 stainless steel powders in order to determine the effect of operating conditions on the particle size and its distribution, and to analyze their microstructures, cooling rate and relative amount of ferrite phase for the as-prepared powders. For the operating conditions of plasma arc current : 140∼240 A and anode rotating speed : 17,500∼25,000rpm, stainless steel powders produced showed the typical bimodal size distribution ranging 50∼425㎛ and mean volume-surface diameter ranging 143∼238㎛. The appearances and microstructures of powders were found to be solidified with cellular or dendrite structures which have being depended on cooling rate(particte size). The estimated cooling rate of powders ranging 150 to 50㎛ in size was about 10³∼10^5K/s. The weight traction of ferrite phase in type 316 powders was found to be increased with decreasing particle size, due to the difference in the solidification behavior. For type 304 powders, however, the ferrite phase was not detected by X.R.D.

[자료제공 : 네이버학술정보]
×