Microstructure and corrosion behaviour of plasma-nitrocarburized sintered steel

被引：8
作者：
Borges, PC
Martinelli, AE
Franco, CV
机构：
[1] Univ Fed Santa Catarina, Dept Quim, BR-88040900 Florianopolis, SC, Brazil
[2] CEFET PR, Dept Acad Mecan, BR-80230901 Curitiba, Parana, Brazil
[3] Univ Fed Rio Grande do Norte, Dept Engn Mecan, BR-59072970 Natal, RN, Brazil
来源：
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION | 2004年 / 55卷 / 08期
关键词：
D O I：
10.1002/maco.200303784
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Powder characteristics and manufacturing processes determine the microstructure, and therefore, the physical, chemical, and mechanical properties of sintered steels. In particular, porosity and corrosion resistance are intimately related, since the contact area between substrate and electrolyte significantly affects the corrosion resistance of sintered steels. This study addresses the effect of powder characteristics and pressing parameters on the microstructure and corrosion resistance of low-carbon sintered and sintered/plasma-nitrocarburized steel. The results indicated that the corrosion resistance increased with increasing density and decreasing specific surface area. Additionally, plasma-nitrocarburizing was highly effective in coating open pores of the material.
引用
收藏
页码：594 / 601
页数：8
相关论文
共 26 条
[1]  
BINDER R, 1995, P ABM 4 SEM MET PO S, P301
[2]  
BOCCHINI GF, 1986, INT J POWDER METALL, V22, P185
[3]   The corrosion behavior of sintered steel:: Effect of nitriding temperature, time, and addition of CH4 in the atmosphere [J].
Borges, PC ;
Martinelli, AE ;
Muzart, JLR ;
Klein, AN ;
Franco, CV .
ADVANCED POWDER TECHNOLOGY, 1999, 299-3 :286-297
[4]  
BORGES PC, 1997, ADV POWDER METALLURG, V3, P77
[5]  
BORGES PC, 1994, ADV POWDER METALLURG, V2, P61
[6]  
BORGES PC, 1995, P ABM 4 SEM MET PO S, P389
[7]  
BORGES PC, 1996, P 2 NACE LAT AM REG, P10
[8]  
CHANDLER HE, 1984, METAL PROGR, P59
[9]  
Chardin H, 1996, INT J POWDER METALL, V32, P245
[10]  
DANNINGER H, 1988, POWDER METALL INT, V20, P7
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