Microstructure and High Temperature Oxidation Property of Fe-Cr-B Based Metal/Ceramic Composite Manufactured by Powder Injection Molding Process

被引:5
作者
Joo, Yeun-Ah [1 ]
Kim, Young-Kyun [1 ]
Yoon, Tae-Sik [2 ]
Lee, Kee-Ahn [1 ]
机构
[1] Inha Univ, Dept Mat Sci & Engn, Incheon 22212, South Korea
[2] Bestner Co, Eumseong 27623, Chungcheogbuk D, South Korea
关键词
Fe-Cr-B based alloy; Powder injection molding; Metal/ceramic composite; Three dimensional network structure; Oxidation mechanism; MECHANICAL-PROPERTIES; WEAR-RESISTANCE; STAINLESS-STEEL; HARDNESS; BORIDES; ALLOYS; IRON;
D O I
10.1007/s12540-018-0053-3
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This study investigated the microstructure and high temperature oxidation property of Fe-Cr-B metal/ceramic composite manufactured using powder injection molding process. Observations of initial microstructure showed a unique structure where alpha-Fe and (Cr, Fe)(2)B form a continuous three-dimensional network. High temperature oxidation tests were performed at 900, 1000 and 1100 A degrees C, for 24 h, and the oxidation weight gain according to each temperature condition was 0.13, 0.84 and 6.4 mg/cm(2), respectively. The oxidation results according to time at 900 and 1000 A degrees C conditions represented parabolic curves, and at 1100 A degrees C condition formed a rectilinear curve. Observation and phase analysis results of the oxides identified Cr2O3 and SiO2 at 900 and 1000 A degrees C. In addition to Cr2O3 and SiO2, CrBO3 and FeCr2O4 formed due to phase decomposition of boride were identified at 1100 A degrees C. Based on the findings above, this study suggested the high temperature oxidation mechanism of Fe-Cr-B metal/ceramic composite manufactured using powder injection molding, and the possibility of its application as a high temperature component material was also discussed.
引用
收藏
页码:371 / 379
页数:9
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