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정전 분무법을 이용하여 제조된 Fe-Cr-Al 분말 다공체 금속의 고온 산화에 미치는 소결 온도의 영향 KCI 등재

Effect of Sintering Temperature on the High Temperature Oxidation of Fe-Cr-Al Powder Porous Metal Manufactured by Electrospray Process

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한국분말야금학회지 (Journal of Korean Powder Metallurgy Institute)
한국분말재료학회(구 한국분말야금학회) (Korean Powder Metallurgy Institute)
초록

A new manufacturing process of Fe-Cr-Al powder porous metal was attempted. First, ultra-fine fecralloy powders were produced by using the submerged electric wire explosion process. Evenly distributed colloid (0.05~0.5% powders) was dispersed on PU (Polyurethane) foam through the electrospray process. And then degreasing and sintering processes were conduced. In order to examine the effect of sintering temperature in process, pre-samples were sintered for two hours at temperatures of , , , and , respectively, in atmospheres. A 24-hour TGA (thermo gravimetric analysis) test was conducted at in a 79% +21% to investigate the high temperature oxidation behavior of powder porous metal. The results of the high temperature oxidation tests showed that oxidation resistance increased with increasing sintering temperature (2.57% oxidation weight gain at sintered specimen). The high temperature oxidation mechanism of newly manufactured Fe-Cr-Al powder porous metal was also discussed.

저자
  • 오재성 | Oh Jae-Sung
  • 공영민 | Kong Young-Min
  • 김병기 | Kim Byoung-Kee
  • 이기안 | Lee Kee-Ahn