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

页码：594 / 601

页数：8

共 26 条

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