Aluminum Oxide Thermal Spray

Since 1905, Saint-Gobain has maintained a reputation for high-quality aluminum oxide thermal spray through technological innovation and an ability to anticipate the changing needs of the industry.

Alumina Titania - Saint-Gobain’s Alumina Titania thermal spray powders feature dense, hard coatings engineered to resist wear due to abrasion, fretting, cavitation, corrosion, particle erosion, and more. By combining aluminum and titanium oxides, a  smooth, wear-resistant coating is formed. Alumina-titania powders are ideal for heater plates, thread guides, and tension washers.  These powders can be utilized in various applications including the chemical and textile industries. 

Aluminum Oxide- Saint-Gobain’s aluminum oxide powder is a gray fused aluminum oxide powder containing about 3% titania. When sprayed, Saint Gobain's alumina oxide powders produce a hard, dense coating that offers wear resistance and dielectric strength that is suitable in aerospace, printing, automotive, and chemical industries.

Magnesium Aluminate (Spinel) - Saint-Gobain’s magnesium aluminate (Spinel) powder is ideal for resurfacing molds, oxygen sensors, ladles, ladle plugs, and other furnace parts. This powder can also be used for resurfacing parts that require high thermal shock resistance. When sprayed, magnesium aluminate helps to control permeability and protect your product against erosion.

Why Aluminum Oxide Thermal Spray Outperforms in High-Wear Environments


Components exposed to abrasion, erosion, and electrical stress fail early when surfaces are not properly protected, driving up replacement costs and unplanned downtime. Aluminum oxide thermal spray solves this by depositing a dense ceramic layer that resists wear and insulates against current, extending part life across demanding industrial settings.

Saint-Gobain alumina powders melt at high temperature and bond tightly to the substrate, forming coatings that hold up under fretting, cavitation, and particle erosion. The result is a hard, smooth surface that performs where bare metal cannot. These properties make aluminum oxide thermal spray a practical choice for engineers managing repair costs and procurement teams sourcing reliable consumables.


Thermal Spray Coating Applications


Alumina thermal spray powders apply through plasma spray, HVOF, and flame spray processes, giving coating specialists flexibility across part geometries and production volumes. Finer cuts such as 5-30 micron grades produce tight, uniform coatings for precision components, while coarser 20-70 micron grades build thicker, wear-resistant layers on larger surfaces.

Common coating applications include pump seals, textile thread guides, heater plates, and semiconductor fixtures used in electronics manufacturing. The dielectric strength of aluminum oxide also supports insulating components in power generation equipment.


Abrasive Blasting and Surface Preparation


Beyond coatings, aluminum oxide serves as a primary media for abrasive blasting and surface preparation. Its angular, hard particles cut cleanly and profile substrates ahead of coating, ensuring strong adhesion. Surface preparation contractors rely on consistent grit chemistry to achieve repeatable anchor patterns, which directly affects coating bond strength. Pairing the right abrasive with the correct grit blasting equipment produces clean, uniform profiles batch after batch.


Wear-Resistant Surfaces for Manufacturing and Aerospace


Manufacturing engineers and aerospace manufacturers specify alumina thermal spray powders to protect parts against the wear that shortens service intervals. High-purity grades reaching 99.8% Al2O3 deliver the hardness and thermal shock resistance critical for aerospace components, turbine hardware, and tooling subjected to repeated thermal cycling.

For maintenance and repair operations, these coatings restore worn dimensions and rebuild damaged surfaces, returning equipment to service without full replacement.

Aluminum Oxide Thermal Spray Technical Information

Material

Saint-Gobain Number

Nominal Size

General Chemistry
Alumina Titania #106 15-45 Micron Al2O3 - 87%, TiO2- 13%
Alumina Titania #107 5-30 Micron Al2O3 - 87%, TiO2 - 13%
Alumina Titania #108 15-45 Micron Al2O3 - 60%, TiO2 - 40%
Alumina Titania #109 5-30 Micron Al2O3 - 60%, TiO2 - 40%
Aluminum Oxide #110 15-45 Micron Al2O3 - 97%, TiO2 - 3%
Aluminum Oxide #110GE 15-45 Micron Al2O3 - 97%, TiO2 - 3%
Aluminum Oxide #112 20-70 Micron Al2O3 - 97%, TiO2 - 3%
Aluminum Oxide #117 5-30 Micron Al2O3 - 97%, TiO2 - 3%
Aluminum Oxide #119 20-45 Micron Al2O3 - 97%, TiO2 - 3%
Aluminum Oxide #150 2-28 Micron Al2O3 - 99.5%
Aluminum Oxide #153PT 15-45 Micron Al2O3 - 99.8%
Magnesium Aluminate (Spinel) #170 15-45 Micron Al2O3 - 24% MgO
Magnesium Aluminate (Spinel) Spherical #171 10-75 Micron Al2O3 - 24% MgO
Aluminum Oxide   #182 20-50 Micron Al2O3 - 99% +
Aluminum Oxide   #183 15-45 Micron Al2O3 - 99% +
Aluminum Oxide   #184 5-30 Micron Al2O3 - 99% +

 

What Is Aluminum Oxide Coating?

Aluminum oxide coatings are dense, hard, wear-resistant coatings with electrical insulating properties that are great for many industries including:

  • automotive
  • aerospace
  • chemical
  • pulp & paper
  • printing

Typical applications for aluminum oxide thermal spray powders include bonded abrasives, refractories, lapping compounds, heat treatment setting sands, micro blasting, biomedical implants, and furnace linings. In addition to providing a smooth finish and being wear-resistant, Alumina thermal spray powders have excellent dielectric strength and thermal shock resistance. 

Saint Gobain Alumina Coatings Chart

alumina powders product chart

For more information on our Saint Gobain aluminum oxide thermal spray powders available and how they can be utilized for your specific application, contact the team at Astro Alloys today!

 

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