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ABOUT MAGNELI  MATERIALS

"Our goal is to be the leading partner and supplier of choice for Stabilized Ti4O7"

Magneli Materials LLC was formed to harness the potential of Magneli Phase Materials. We provide volume supplies of high quality stabilized Magneli Materials in two grades. We serve as the central point for the dissemination of research and knowledge relating to Magneli Phase materials.

Magneli Materials leads the development of:

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  • Advanced anodes utilizing Stabilized Ti4O7

  • Advanced catalysts for anodes coated with Ti4O7

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Over the course of the last three years Magneli Materials has developed:

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  • The ability to coat numerous substrates with the Ti4O7 powders including Titanium, Stainless Steel, and Lead.

  • The ability to manufacture a Ti4O7 reactive membrane anode.

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We provide support for continued research in this area through collaboration with academic research groups, product developers, and end users. Our end users customers include large multinational blue chip industrial  companies across the globe. We can partner with corporations under NDA's to help with their research projects.

About Ti4O7, Magneli Phase Titanium Oxide

Magneli Materials LLC has created a novel and superior class of Ti407, Magneli Phase of Titanium Oxide which is different from conventional Magneli Phase materials, such as Ti407, Ti509, and Ti6011. Our product has a consistently higher percentage of Ti407, and will not oxidize under most conditions.

THE PRINCIPLES OF MAGNELI PHASE MATERIALS 

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Arne Magneli established the study of transition metal sub-oxides and shear plane dislocations. This lead to the discovery of conductive Titanates and Perovskites. Starting in the 1940’s, he examined a variety of transition metal oxide materials to determine why they were lubricious and electrically conductive – they should have been neither.

These early studies were focused on Tungsten and Molybdenum sub-oxides, while his later work transitioned to Titanium sub-oxides (Ti4O7) where he discovered dislocation planes in the crystalline structure. The dislocation planes accounted for their electrical conductivity and lubricious properties, the same mechanism gives rise to graphite and Graphene’s properties:​

Magneli Phase sub-oxides of titanium are ceramic materials which have a graphite-like crystalline structure otherwise known as a Magneli Phase. Magneli Phase sub-oxides of titanium have individually identifiable X-ray diffraction spectra and not simply doped titania or casual mixtures of TiOx. Magneli phase titanium sub-oxides are a range of distinct compounds having a general formula:

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TinO2n-1 (n=4 – 10)  (e.g. Ti4O7, Ti5O9, Ti6O11…)

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  • Ti4O7, V2O3 are “Magneli Phase” sub-oxides.

  • MxTyOz are “Magneli Phase” Metal Titanates.

  • Ti4O7 is by far the best known and most studied Magneli Phase material.

Why Our Ti4O7 Ceramic Powders?
Powders
BENEFITS OF THE MAGNELI PHASE OF TITANIUM DIOXIDE Ti407

  • Substantially higher content of Ti4O7 (more than 80% Ti407).

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  • Structural stabilized:

    • Nano powder can be massively produced for the first time

    • More chemically and electrochemically stable

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  • Powders are produced in two configurations:

    • Nano Grade # N82

    • Micro Grade #JB15

Stabilized Magneli phase materials offer:

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  • High Corrosion Resistance in Acidic and Basic solutions

  • High electrical conductivity

  • High electro-chemical stability

Additionally:

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  • Ti4O7 is the most reduced Magneli phase. It has Rutile form of TiO2 with every 8th Oxygen removed;

  • Ti4O7 has the highest number of shear planes occurring at the shortest spacing of these shear planes.

  • Ti4O7 has the highest electrical conductivity and chemical stability among all Magneli phase of titanium suboxides.

  • When the n equals to 3 or less, the shear plane accommodation of the octahedra collapses and so does the crystallographic structure from triclinic to monoclinic.

PRIOR DIFFICULTIES OF COMMERCIAL USE OF Ti407

Commercial acceptance of Magneli phase materials has been pending cost effective production of mass quantities of stabilized material due to the following:

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  • Ti407 was expensive and difficult to manufacture in high volume

  • The process requires a 2-step process with chemical reduction at >1000C in a H2 filled furnace!

  • The Magneli Shear Planes can oxidize using this manufacturing process creates Ti4O7 which can revert to TiO2 when exposed to some conditions

  • Shear Plane oxidation limits the forms in which Ti4O7 can be effective

  • Nano-scale structures (fibers, films, high surface area) are unstable

  • Difficult to apply as a plasma sprayed coating or PVD film

  • Makes poor conductive polymers

  • Particle size and morphology cannot be fully optimized for long term stability

  • Material forms were limited to micro scale powders and ceramic plates and tubes.​

MAGNELI MATERIALS' COMMERCIAL SOLUTION

  • Developed a new manufacture process and novel class of more advanced materials through Structural Stabilization of the Magneli Shear Planes

    • Novel form of crystalline structure which has another metal atom present, inhibiting the realignment of the Magneli Shear Planes

    • Resists conversion to TiO2 when exposed to strong oxidizing conditions

  • Greatly expands the forms in which it can be made

    • Micro and Nano-scale structure powders

    • Plasma sprayed coatings on low cost substrates (Ti , Al and stainless steel)

    • High surface area reticulated foams

    • Ceramic articles

  • Economical to manufacture in high volumes and consistency

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