Surface characterizations of laser modified biomedical grade NiTi shape memory alloys

Materials Science & Engineering. C, Materials for Biological Applications
A PequegnatM I Khan

Abstract

Laser processing of shape memory alloys (SMAs) promises to enable the multifunctional capabilities needed for medical device applications. Prior to clinical implementation, the surface characterisation of laser processed SMA is essential in order to understand any adverse biological interaction that may occur. The current study systematically investigated two Ni-49.8 at.% Ti SMA laser processed surface finishes, including as-processed and polished, while comparing them to a chemically etched parent material. Spectrographic characterisation of the surface included; X-ray photoelectron spectroscopy (XPS), auger electron spectroscopy (AES), and Raman spectroscopy. Corrosion performance and Ni ion release were also assessed using potentiodynamic cyclic polarization testing and inductively coupled plasma optical emission spectroscopy (ICP-OES), respectively. Results showed that surface defects, including increased roughness, crystallinity and presence of volatile oxide species, overshadowed any possible performance improvements from an increased Ti/Ni ratio or inclusion dissolution imparted by laser processing. However, post-laser process mechanical polishing was shown to remove these defects and restore the performance, making it c...Continue Reading

References

Feb 1, 1978·The British Journal of Dermatology·K KaaberJ C Tjell
Sep 1, 1976·Journal of Biomedical Materials Research·L S CastlemanV L Bonawit
Jul 15, 1998·Biomaterials·D J WeverJ R van Horn
Jul 13, 2002·Journal of Biomedical Materials Research·O CisséL'H Yahia
Oct 4, 2002·Biomaterials·G S FirstovJ Van Humbeeck
Mar 13, 2003·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·S A ShabalovskayaG Rondelli
Jan 1, 1962·Journal of Chronic Diseases·H A SCHROEDERI H TIPTON
Oct 26, 2005·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·A MichiardiF J Gil
Jan 5, 2006·Journal of Biomedical Materials Research. Part a·Xiao-Jun Yan, Da-Zhi Yang
Jan 5, 2006·Journal of Biomedical Materials Research. Part a·Bruce G Pound
Jul 11, 2007·Journal of Materials Science. Materials in Medicine·P SevillaF J Gil
Mar 11, 2008·Acta Biomaterialia·S ShabalovskayaJ Van Humbeeck
Apr 7, 2009·Biomaterials·Svetlana A ShabalovskayaMarkus E Rettenmayr
Dec 4, 2009·Journal of Materials Engineering and Performance·Norman MunroeWaseem Haider
Jun 15, 2011·Journal of Materials Engineering and Performance·Waseem Haider, Norman Munroe
Sep 13, 2012·Acta Radiologica·Benjamin WiesingerJakub Wiskirchen

❮ Previous
Next ❯

Citations

Jun 12, 2016·Materials Science & Engineering. C, Materials for Biological Applications·Jayasheelan VaithilingamSteven D R Christie
Jul 19, 2018·Journal of Materials Science. Materials in Medicine·Justyna WitkowskaTadeusz Wierzchoń
Dec 15, 2018·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Ruixia ZhangChang Ye

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.