Effects of Surface Active Element on the Biocompatibility of High Nitrogen Stainless Steel

W.C. Luo; Y.L. Ke; Shuang Shii Lian; F.M. Chu

doi:10.4028/www.scientific.net/KEM.479.1

Paper Titles

Preface, Sponsors and Organizing Committees

Effects of Surface Active Element on the Biocompatibility of High Nitrogen Stainless Steel
p.1

Quench Brittleness of 12%Cr Martensitic Heat-Resistant Steel
p.8

The Formation and Occurrence of Non-Metallic Inclusions of Si-Doped Steel during Continuous Casting
p.13

Microstructure and Mechanical Properties of Molybdenum Alloy Strengthened by Lanthanum Oxide and Silicon
p.22

AZ80 Mg Alloy Synthesized by Spray Forming and its Extrudability
p.27

Effect of Carbon Migration on Sulfide Stress Corrosion Cracking Behavior of Dissimilar Joints in Wet H₂S Environment
p.34

Microstructures and Mechanical Properties of Dissimilar Metal Weld A508/52M/316L Used in Nuclear Power Plants
p.40

Amorphization Behavior of Ni₅₇Zr₂₀Ti₂₂Ge₁ Powders by Mechanical Alloying
p.48

HomeKey Engineering MaterialsKey Engineering Materials Vol. 479Effects of Surface Active Element on the...

Effects of Surface Active Element on the Biocompatibility of High Nitrogen Stainless Steel

Abstract:

Nickel-free high nitrogen stainless steel has become more important due to its impressive mechanical and corrosion properties. In contrast to high pressure processes, melting plasma in a normal atmosphere is an alternative way of obtaining high nitrogen content at low cost. However, melting in such an atmosphere will bring some surface impurities, like sulfur and oxygen, into the stainless steel through the refractories or the materials themselves. Therefore, this research aims the relationship between the sulfur and nitrogen content, and their influence on biocompatibility. Thermo-Calc is first used to design the composition of Fe-Cr based austenitic nitrogen stainless steel, and melted with different melting techniques, including plasma and an induction melting furnace. The results indicate that the nitrogen content varies with different sulfur content. It is also found that α-Fe (Ferrite) plates are observed near the grain boundaries when the sulfur content reaches a certain level. Besides, the Sulfur content has an obvious influence on the biocompatibility rather than nitrogen contents.

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Key Engineering Materials (Volume 479)

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1-7

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https://doi.org/10.4028/www.scientific.net/KEM.479.1

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April 2011

Authors:

W.C. Luo, Y.L. Ke, Shuang Shii Lian, F.M. Chu

Keywords:

Fe-Cr, High Nitrogen, SAE, Stainless Steel (SS), Sulfur, Surface Active Elements

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