WC-10Co4Cr 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.
- Replacing hard chrome plating.
- Cobalt &Chrome has better corrosion resistance and wear properties than Cobalt, especially in wetting and corrosion environments.
- Mainly used in aircraft landing gear, gate valves, ball valves, paper rollers, hydraulic cylinders, compressor rods, metallurgical rollers, mechanical parts, etc.
Grade & Chemical Composition
|
Grade |
Chemical Composition (Wt, %) |
|||||
|
W |
T. C |
Co |
Cr |
Fe |
O |
|
|
ZTC45 |
Balance |
5.2 – 6.0 |
9.1 – 10.1 |
3.0 – 4.5 |
≤ 1.0 |
≤ 0.5 |
|
ZTC45D* |
Balance |
5.2 – 6.0 |
9.1 – 10.1 |
3.0 – 4.5 |
≤ 0.15 |
≤ 0.5 |
*: D stands for spherical or near-spherical thermal spray powder.
Specification & Physical Properties
|
Grade |
Type |
Size Fraction (μm) |
Apparent Density ( g/cm³) |
Flow Rate (s/50g) |
Application |
|
ZTC4551 |
WC – Co – Cr 86/10/4 Sintered & Crushed |
– 53 + 20 |
≥ 4 |
≤ 25 |
(JP5000 & JP8000, DJ2600 & DJ2700, JetKote, Woka Jet, K2)
|
|
ZTC4553 |
– 45 + 20 |
≥ 4 |
≤ 25 |
||
|
ZTC4552 |
– 45 + 15 |
≥4 |
≤ 25 |
||
|
ZTC4551D |
WC – Co – Cr 86/10/4 Agglomerated & Sintered |
– 53 + 20 |
≥ 4 |
≤ 18 |
|
|
ZTC4553D |
– 45 + 20 |
≥ 4 |
≤18 |
||
|
ZTC4552D |
– 45 + 15 |
≥ 4 |
≤18 |
||
|
ZTC4581D |
– 45 + 11 |
≥ 4 |
≤18 |
||
|
ZTC4554D |
– 38 + 10 |
≥ 4 |
≤18 |
||
|
ZTC4582D |
– 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 – 10Co – 4Cr |
|
Hardness (HV0.3) |
1150 – 1400 |
| Manufacturing |
Agglomerated & Sintered |
|
Bonding Strength (MPa) |
> 70MPa |
| Size Fraction (µm) |
– 45 + 15 |
|
Deposited efficiency (%) |
40 – 55% |
| Spray Torch |
JP5000 |
|
Porosity (%) |
< 1% |
| Nozzle (inch) |
6 |
|
|
|
| Kerosene (L/h) |
24 |
|
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| Oxygen (L/min) |
944 |
|
||
| Carrier gas (Ar) (L/min) |
7.5 |
|
||
| Powder feed rate (g/min) |
70 – 80 |
|
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| Spraying distance (mm) |
340 – 380 |
|
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