WC-17Co Thermal Spray Powder
- Both Agglomerated & Sintered and Sintered and Crushed powder are available. Agglomerated and sintered powders are spherical or near-spherical with good flowability. Sintered and crushed powders are irregular.
- The maximum service temperature is up to 500℃.
- The dense coating has high hardness with excellent resistance to abrasive wear, fretting wear, adhesive wear, and erosion wear.
- High fracture toughness.
- Mainly used in mechanical parts, oil and gas equipment, metallurgical roller and pump seal, etc.
Grade & Chemical Composition
|
Grade |
Chemical Composition (Wt, %) |
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|
W |
T. C |
Co |
Fe |
O |
|
|
ZTC43 |
Balance |
4.7 – 5.2 |
16.5 – 17.5 |
≤ 1.0 |
≤ 0.5 |
|
ZTC43D* |
Balance |
4.7 – 5.2 |
16.5 – 17.5 |
≤ 0.15 |
≤ 0.5 |
*: D stands for spherical or near-spherical thermal spray powder.
Size & Physical Properties
|
Grade |
Type |
Size Fraction (μm) |
Apparent Density ( g/cm³) |
Flow Rate (s/50g) |
Application |
|
ZTC4351 |
WC – Co 83/17 Sintered & Crushed |
– 53 + 20 |
≥ 4 |
≤ 25 |
(JP5000 & JP8000, DJ2600 & DJ2700, JetKote, Woka Jet, K2)
|
|
ZTC4353 |
– 45 + 20 |
≥ 4 |
≤25 |
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|
ZTC4352 |
– 45 + 15 |
≥ 4 |
≤ 25 |
||
|
ZTC4351D |
WC – Co 83/17 Agglomerated & Sintered |
– 53 + 20 |
≥ 4 |
≤ 18 |
|
|
ZTC4353D |
– 45 + 20 |
≥ 4 |
≤ 18 |
||
|
ZTC4352D |
– 45 + 15 |
≥ 4 |
≤ 18 |
||
|
ZTC4381D |
– 45 + 11 |
≥ 4 |
≤ 18 |
||
|
ZTC4354D |
– 38 + 10 |
≥ 4 |
≤ 18 |
||
|
ZTC4382D |
– 30 + 10 |
≥ 4 |
≤ 18 |
||
| We can tailor-make different particle size distributions and apparent densities for various applications. | |||||
| Recommended Spray Parameters (HVOF) |
|
Coating Properties |
||
| Material |
WC – 17Co |
|
Hardness (HV0.3) |
950 – 1200 |
| Manufacturing |
Agglomerated & Sintered |
|
Bonding Strength (MPa) |
> 70MPa |
| Size Fraction (µm) |
– 45 + 15 |
|
Deposited efficiency (%) |
45 -55 % |
| Spray Torch |
JP5000 |
|
Porosity (%) |
< 1% |
| Nozzle (inch) |
6 |
|
|
|
| Kerosene (L/h) |
22.7 |
|
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| Oxygen (L/min) |
944 |
|
||
| Carrier gas (Ar) (L/min) |
7.5 |
|
||
| Powder feed rate (g/min) |
70 – 100 |
|
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| Spraying distance (mm) |
350 – 380 |
|
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