Electron Spectroscopy For Chemical Analysis Of Stainless Steel And Nitinol

Many production processes demand the passivization of this substance to be able to be sure the surface is either inert or non-reactive. With stainless steel, by way of instance, the passivation of the face helps prevent rust or corrosion.

To get Nitinol (a nickel-titanium metal), the passivation of these substances helps prevent corrosion, in addition to aids biocompatibility.

The procedure uses an x-ray beam to arouse a good sample, leading to the emission of photoelectrons. The principal benefit of ESCA is the way it can examine a wide assortment of substances – such as polymers, glasses, metals, fibers, semiconductors, and newspaper – and – identify surface components in addition to their chemical condition.

Spectral calibration lamps create narrow, extreme lines of ultraviolet (UV) to infrared (IR) wavelengths as a result of excitation of numerous rare gases and metal vapors.

The features used to assess passivized stainless steel would be the chromium-to-iron as well as the nitric oxide into iron oxide ratios. Both these ratios, in addition to the depth of the passivation coating, may be quantified using ESCA.

But to be utilized in medical instruments, the metal has to be passivized to stop corrosion and any potential leaching of nickel to the body.

Electron Spectroscopy for Chemical Analysis of Stainless Steel

The characteristics used to assess passivated stainless steel would be the chromium-to-iron as well as the chromium oxide to iron oxide ratios. Both these ratios, as well as the thickness of the passivation coating, can be quantified using ESCA.

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Electron Spectroscopy for Chemical Analysis of Nitinol

Nitinol is a shape memory alloy with superelastic properties. However, to be used in medical devices, the alloy must be passivated to prevent corrosion and any potential leaching of nickel to the human body.

ESCA is a helpful technique for assessing the passivated Nitinol surface to the existence or non-presence of nickel and determining the depth of the passivation layer. Nitinol will generally passivate by forming a titanium oxide coating on the surface.