MICROSTRUCTURE, CORROSION AND TRIBOLOGICAL BEHAVIOR OF PLASMA IMMERSION ION-IMPLANTED AUSTENITIC STAINLESS-STEEL

被引:231
作者
SAMANDI, M
SHEDDEN, BA
SMITH, DI
COLLINS, GA
HUTCHINGS, R
TENDYS, J
机构
[1] AUSTRALIAN NUCL SCI & TECHNOL ORG, LUCAS HTS RES LABS, PRIVATE MAIL BAG 1, MENAI, NSW 2234, AUSTRALIA
[2] UNIV WOLLONGONG, DEPT MAT ENGN, WOLLONGONG, NSW 2500, AUSTRALIA
关键词
D O I
10.1016/0257-8972(93)90094-5
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The surface modification of AISI 316 stainless steel by plasma immersion ion implantation (PI3) has been investigated over a range of treatment temperatures. Below 250-degrees-C the results are similar to those obtained by conventional ion beam implantation of nitrogen, but the depth of nitrogen penetration increases dramatically with temperature. Up to 450-degrees-C a nitrogen-expanded austenite phase is formed which is shown to have improved corrosion performance over the untreated material. At 520-degrees-C chromium nitride is precipitated and the expanded austenite transforms to martensite, leading to a reduction in corrosion resistance. Pin-on-disc testing indicates improved wear resistance at all temperatures, with reduction in the wear volume by factors of several hundred at high loads. This can be attributed to the formation of an oxide layer which prevents the initiation of severe metallic wear.
引用
收藏
页码:261 / 266
页数:6
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