Product
Technical
Information
|
Sprayable
Superfine
Tungsten Carbide Cobalt –
Infralloy™ Powder S7400 Series
[U.S.
Patent Nos. 6,025,034 6,277,448 6,277,774 6,287,714]
|
| Thermal
Spray Grade |
Tungsten
carbide cobalt is a ceramic-metal (cermet) composite material used
as a wear resistant coating. The alloyed form gives superior hardness.
Infralloy™ powder is made from WC nanoparticles alloyed with
a cobalt binding matrix phase. |
Infralloy™
Series S7400 powder is available as agglomerated particles with dimension
5 < F < 45 mm with high flowability for HVOF thermal spray applications.
|
| |
Morphology |
| SEM
micrograph typical of Infralloy™ S7412 feedstock powder showing
spherical geometry with high flowability. |
 |
|
| Properties
of Infralloy™ S7400 Series Powders |
S7412 |
S7417 |
| WC : Co wt ratio |
88 : 12 |
83 : 17 |
| Alloy
content |
< 1 % |
< 1 % |
| powder grain
size (ave.) |
50 - 500 nm |
50 - 500 nm |
| agglomerated
powder size |
5 < Φ
< 45 μm |
5 < Φ
< 45 μm |
| coating hardness
(typical) |
1100 VHN |
900 VHN |
1 nanometer
(nm) = 10 – 9 meter (m) |
Coating
Microstructure |
| Cross
sectional SEM view of a typical very dense carbide coating produced
by a Metco HVOF gun using Infralloy™ S7412 feedstock powder.
Pores (dark spots) occupy only ~ 1% volume. |
 |
Suggested
Applications |
| Inframat
Infralloy™ S7400 Series powder is a superior coating material
providing wear-, erosion-, and corrosion-resistant surfaces where
excellent to exceptional fracture toughness is required. |
| S7400
Series |
Coating
Types |
Fracture
Toughness |
| S7412 |
Wear-, Erosion-,
Corrosion-Resistant |
Excellent |
| S7417 |
Wear-, Erosion-,
Corrosion-Resistant |
Exceptional |
The Thermal Spray
Grade material can be applied with DC Arc plasma and HVOF guns. Full spray
specifications are available through Technical Applications Bulletins
Nos. S7412.01B and S7417.01B. |
