Influence of metallic materials on water intended for human consumption. Method to evaluate the passive behaviour of stainless steels

2012 ◽  
Keyword(s):  
Stainless Steels ◽  
Human Consumption ◽  
Metallic Materials

scholarly journals Recent progress on the corrosion behavior of metallic materials in HF solution

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Hailong Dai ◽  
Shouwen Shi ◽  
Lin Yang ◽  
Can Guo ◽  
Xu Chen
Keyword(s):  
Environmental Factors ◽  
Stainless Steels ◽  
Hydrofluoric Acid ◽  
Recent Progress ◽  
Future Research ◽  
Fluoride Ion ◽  
Metallic Materials ◽  
Chemical Coupling ◽  
Corrosion Behaviors ◽  
Corrosion Mechanisms

Abstract Hydrofluoric acid (HF) or fluoride ion corrosion issues are often encountered in many fields, which have attracted extensive research due to its strong corrosiveness. In this paper, a critical review is presented based on recent progress on HF corrosion. In view of the discrepancy of fluoride ion compared with other ions, the special attack characteristics of fluoride ion are firstly discussed. Afterwards, the corrosion mechanisms of stainless steels, nickel-based alloys, and titanium alloys in HF solution or fluoride ion-containing environment are reviewed, and three typical corrosion behaviors are summarized, which are essentially weakening process of passivation of metallic materials. The effects of influencing factors (e.g. alloying elements, environmental factors, and stress, etc.) on HF corrosion are also discussed, which involve changes in passivation mechanism, the influence of HF attack mode and multiple damage mechanisms due to mechanical–chemical coupling. Finally, future research works on HF corrosion are proposed.

Stainless Steels with Biocompatible Properties for Medical Devices

2013 ◽  
Vol 583 ◽  
pp. 9-15 ◽  
Author(s):  
Victor Geanta ◽  
Ionelia Voiculescu ◽  
Radu Stefanoiu ◽  
Elena Roxana Rusu
Keyword(s):  
Medical Devices ◽  
Stainless Steels ◽  
Point Of View ◽  
Vacuum Arc ◽  
Metallic Materials ◽  
Vacuum Arc Remelting ◽  
Martensitic Stainless Steels ◽  
Superior Mechanical Properties ◽  
Materials Used ◽  
Experimental Researches

Stainless steels, commercial as well as with special properties, are the principal metallic materials used for medical devices manufacturing. Stainless steels for medical devices should have superior mechanical properties, as: hardness, wear resistance, tensile strength, elongation, fracture toughness, creep resistance etc. This paper aims to present experimental researches regarding the obtaining in vacuum arc remelting device (VAR) of austenitic and martensitic stainless steels and their characterization from microstructure and microhardness point of view.

Enhancement of Surface Property by Low-Energy Laser Peening without Protective Coating

2007 ◽  
Vol 345-346 ◽  
pp. 1589-1592 ◽  
Author(s):  
Yuji Sano ◽  
T. Adachi ◽  
Koichi Akita ◽  
I. Altenberger ◽  
M.A. Cherif ◽  
...  
Keyword(s):  
Protective Coating ◽  
Stainless Steels ◽  
Thermal Loading ◽  
Austenitic Stainless Steels ◽  
Low Energy ◽  
Laser Peening ◽  
Metallic Materials ◽  
Energy Laser ◽  
Compressive Residual Stresses ◽  
Low Energy Laser

Laser peening without protective coating (LPwC) has been applied to metallic materials using low energy pulses of a Q-switched and frequency-doubled Nd:YAG laser. Compressive residual stresses of several hundred megapascals were imparted on the surface of the materials. Redistribution of the residual stress in the top surface due to thermal loading was evaluated non-destructively by synchrotron radiation of SPring-8. Accelerating stress corrosion cracking (SCC) tests showed that LPwC prohibited SCC of sensitized materials. LPwC largely prolonged the fatigue lives of titanium alloys, aluminum alloys and austenitic stainless steels.

scholarly journals Corrosion of Additively Manufactured Stainless Steels– Process, Structure, Performance: A Review

CORROSION ◽  
10.5006/3741 ◽  
2021 ◽  
Author(s):  
Eric Schindelholz ◽  
Michael Melia ◽  
Jeffrey Rodelas
Keyword(s):  
Stainless Steels ◽  
Critical Factor ◽  
Current Status ◽  
Surface Finishing ◽  
Research Needs ◽  
Metallic Materials ◽  
Environmentally Assisted Cracking ◽  
Unique Material ◽  
Process Structure ◽  
Corrosion Research

The corrosion of additively manufactured (AM) metallic materials, such as stainless steels (SS), is a critical factor for their qualification and reliable use. This review assesses the emerging knowledgebase of powder-based laser AM SS corrosion and environmentally assisted cracking (EAC). The origins of AM-unique material features and their hierarchal impact on corrosion and EAC are addressed relative to conventionally processed SS. The effects of starting material, heat treatment and surface finishing are substantively discussed. An assessment of the current status of AM corrosion research, scientific gaps and research needs with greatest impact for AM SS advancement and qualification is provided.

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