Cross-sectional transmission electron microscopy characterisation of plasma immersion ion implanted austenitic stainless steel

被引：32

作者：

Li, X ^{[1
]}

Samandi, M ^{[1
]}

Dunne, D ^{[1
]}

Collins, G ^{[1
]}

Tendys, J ^{[1
]}

Short, K ^{[1
]}

Hutchings, R ^{[1
]}

机构：

[1] AUSTRALIAN NUCL SCI & TECHNOL ORG,MENAI,NSW 2234,AUSTRALIA

来源：

SURFACE & COATINGS TECHNOLOGY | 1996年 / 85卷 / 1-2期

关键词：

ion implantation; stainless steel; amorphous; PI3; XTEM;

D O I：

10.1016/0257-8972(96)02879-4

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Cross-sectional transmission electron microscopy (XTEM), selected area diffraction (SAD) and nano;beam diffraction (NBD) techniques were used to investigate the surface microstructure of 316 stainless steel, implanted with high doses of nitrogen ions at 150, 250, 350, 450 and 520 degrees C using plasma immersion ion implantation. It has been found that the treatment temperature has a strong influence on the evolution of the microstructure. An amorphous layer of about 1 mu m thick with a heavily stressed substrate underneath was observed on the 150 degrees C implanted sample. Both the 250 and 350 degrees C implanted samples showed a thin nanocrystalline sublayer at the outermost surface and an amorphous sublayer between the nanocrystalline sublayer and the substrate. A thick amorphous layer up to 3 mu m thick was formed on the 450 degrees C implanted sample whereas at 520 degrees C, cellular precipitation of CrN and alpha-ferrite dominated the system. It is suggested that a solid state chemical reaction and the poor mobility of the reactant atoms are the key factors for the solid state amorphisation by nitrogen ion implantation into austenite.

引用

页码：28 / 36

页数：9

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