WC-20Cr3C2-7Ni Thermal Spray Powder
- Agglomerated and sintered gray-black spherical or near-spherical particles with good flowability.
- The maximum service temperature is up to 750℃. It can be used in humid environments.
- The dense coating has excellent resistance to oxidation, corrosion, and abrasion.
- Anti-oxidation and corrosion resistance are better than WC-Co – based coatings.
- Mainly used in the steel & iron industry, paper making, pump valves, etc.
Grade & Chemical Composition
|
Grade |
Chemical Composition (Wt, %) |
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|
W |
T. C |
Ni |
Cr |
Fe |
O |
|
|
ZTC48D* |
Balance |
5.8 – 6.4 |
6 – 8 |
20 – 23 |
≤ 0.5 |
≤ 0.5 |
*: D stands for spherical or nearly spherical thermal spray powder.
Size & Physical Properties
|
Grade |
Type |
Size Fraction (μm) |
Apparent Density ( g/cm³) |
Flow Rate (s/50g) |
Application |
|
ZTC4851D |
WC – Cr3C2 – Ni 73/20/7 Agglomerated & Sintered |
– 53 + 20 |
≥ 4 |
≤ 18 |
(JP5000 & JP8000, DJ2600 & DJ2700, JetKote, Woka Jet, K2)
|
|
ZTC4853D |
– 45 + 20 |
≥ 4 |
≤ 18 |
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|
ZTC4852D |
– 45 + 15 |
≥ 4 |
≤ 18 |
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|
ZTC4881D |
– 45 + 11 |
≥ 4 |
≤ 18 |
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|
ZTC4854D |
– 38 + 10 |
≥ 4 |
≤ 18 |
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|
ZTC4882D |
– 30 + 10 |
≥ 4 |
≤ 30 |
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| We can tailor-make different particle size distributions and apparent densities for various applications. | |||||
| Recommended Spray Parameters (HVOF) |
|
Coating Properties |
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| Material |
WC -20Cr3C2 – 7Ni |
|
Hardness (HV0.3) |
950 – 1200 |
| Manufacturing |
Agglomerated & Sintered |
|
Bonding Strength (MPa) |
> 70MPa |
| Size Fraction (µm) |
– 45 + 15 |
|
Deposited efficiency (%) |
35 – 45% |
| Spray Torch |
JP5000 |
|
Porosity (%) |
< 1% |
| Nozzle (inch) |
6 |
|
|
|
| Kerosene (L/h) |
23 |
|
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| Oxygen (L/min) |
900 |
|
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| Carrier gas (Ar) (L/min) |
8.0 |
|
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| Powder feed rate (g/min) |
70 – 80 |
|
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| Spraying distance (mm) |
340 – 360 |
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