Journal of Powder Materials

Patent Analysis for the Preparation of Rare Metals: Kee-Ahn Lee, Jae-Sung Oh, Jae-Yeon Kim, Bum-Sung Kim, Taek-Soo Kim; J Korean Powder Metall Inst. 2014;21(2):147-154. Published online April 1, 2014; DOI: https://doi.org/10.4150/KPMI.2014.21.2.147

62 View
0 Download

PDF

Effect of Cell Size on the High Temperature Oxidation Properties of Fe-Cr-Al Powder Porous Metal Manufactured by Electro-spray Process: Jae-Sung Oh, Young-Min Kong, Byoung-Kee Kim, Kee-Ahn Lee; J Korean Powder Metall Inst. 2014;21(1):55-61. Published online February 1, 2014; DOI: https://doi.org/10.4150/KPMI.2014.21.1.55

173 View
1 Download
3 Citations

Fe-Cr-Al powder porous metal was manufactured by using new electro-spray process. 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 Polyurethane foam through the electro-spray process. And then degreasing and sintering processes were conduced. In order to examine the effect of cell size (200 μm, 450 μm, 500 μm) in process, pre-samples were sintered for two hours at temperature of 1450°C, in H₂ atmospheres. A 24-hour thermo gravimetric analysis test was conducted at 1000°C in a 79% N₂ + 21% O₂ 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 cell size. In the 200 μm porous metal with a thinner strut and larger specific surface area, the depletion of the stabilizing elements such as Al and Cr occurred more quickly during the high-temperature oxidation compared with the 450, 500 μm porous metals.

Citations

Citations to this article as recorded by

Fabrication and Mechanical Properties of Open‐Cell Austenitic Stainless Steel Foam by Electrostatic Powder Spraying Process
Tae-Hoon Kang, Kyu-Sik Kim, Jung-Yeul Yun, Min-Jeong Lee, Kee-Ahn Lee
Advanced Engineering Materials.2020;[Epub] CrossRef
Microstructure and High Temperature Oxidation Behaviors of Fe-Ni Alloys by Spark Plasma Sintering
Chae Hong Lim, Jong Seok Park, Sangsun Yang, Jung-Yeul Yun, Jin Kyu Lee
Journal of Korean Powder Metallurgy Institute.2017; 24(1): 53. CrossRef
Effect of Al2O3 Inter-Layer Grown on FeCrAl Alloy Foam to Improve the Dispersion and Stability of NiO Catalysts
유진 이, 본율 구, 성호 백, 만호 박, 효진 안
Korean Journal of Materials Research.2015; 25(8): 391~397. CrossRef

Effect of Sintering Temperature on the High Temperature Oxidation of Fe-Cr-Al Powder Porous Metal Manufactured by Electrospray Process: Jae-Sung Oh, Young-Min Kong, Byoung-Kee Kim, Kee-Ahn Lee; J Korean Powder Metall Inst. 2012;19(6):435-441.; DOI: https://doi.org/10.4150/KPMI.2012.19.6.435

95 View
0 Download
1 Citations

Abstract PDF

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 1350°C, 1400°C, 1450°C, and 1500°C, respectively, in H_2 atmospheres. A 24-hour TGA (thermo gravimetric analysis) test was conducted at 1000°C in a 79% N_2+21% O_2 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 1500°C sintered specimen). The high temperature oxidation mechanism of newly manufactured Fe-Cr-Al powder porous metal was also discussed.

Citations

Citations to this article as recorded by

Effect of Cell Size on the High Temperature Oxidation Properties of Fe-Cr-Al Powder Porous Metal Manufactured by Electro-spray Process
Jae-Sung Oh, Young-Min Kong, Byoung-Kee Kim, Kee-Ahn Lee
Journal of Korean Powder Metallurgy Institute.2014; 21(1): 55. CrossRef

Search