Inframat Advanced Materials - Thermal Spray Powder

Sprayable Nanostructured Alumina / Titania S2613P Nanox™ Powder

Thermal Spray Grade Plasma Densified

Alumina/Titania is a ceramic composite material used as a wear resistant coating for machine components.
Nanox™ S2613P feedstock powder is agglomerated nanoparticles with high density and flowability and an average diameter of 30 µm.

Morphology

SEM micrograph typical of Nanox™ S2613P feedstock powder showing spherical geometry with high flowability.

Coating Microstructure

Cross sectional SEM view of a typical dense ceramic coating produced by a Metco plasma gun using Nanox™ S2613P feedstock powder. Pores (dark spots) occupy only 2 - 5 % volume.

[U.S. Patent Nos. 6,025,034 / 6,162,530 / 6,277,448 / 6,277,774 / 6,287,714]
Year 2001 R&D 100 Award Winner

Properties of Nanox^TM S2613P Powder

Al₂O₃ : TiO₂wt ratio	87 : 13
CeO₂ content, wt %	6 - 8 %
ZrO₂ content, wt %	8 - 10 %
powder grain size (ave.)	50 - 500 nm
agglomerated powder size (ave.)	30 µm
tap density	2.0 g/cm³

• 1 nanometer (nm) = 10 -⁹ meter (m)
• Nanoscale Materials for the Global Infrastructure™

Wear Characteristics

SEM studies of wear surfaces reveal a morphology difference between coatings sprayed with conventional versus nanostructured alumina/titania. The wear tracks on conventional coatings are rough (grooves, deformation and microfracture), whereas the wear surfaces on nanostructured alumina/titania coatings are relatively smooth (no grooves, deformation or microfracture). Wear resistance is related to toughness, microhardness, and microstructure. Toughness of nanostructured alumina/titania improves the wear resistance of the coatings. Full spray specifications are available through Technical Applications Bulletin No. S2613P.01.A.\

SEM micrograph of worn surface typical of conventional alumina/titania coating. Note: large "plate like" pieces were removed by wear resulting in grain "pull-out."

SEM micrograph of worn surface typical of nanostructured alumina/titania coating made from Nanox™ S2613P feedstock. Smaller pieces were removed resulting in polishing of the coating surface.

The information and recommendations contained in this publication are based upon data collected by Inframat® Corporation and believed to be correct. However, no guarantee or warranty of any kind, expressed or implied, is made with respect to the information contained herein, and Inframat® Corporation assumes no responsibility for the results of the use of these products and processes described herein. No statements or recommendations made herein are to be construed as inducements to infringe any relevant patent, now or hereafter in existence.

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