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WC-17Ni Thermal Spray Powder

  • Agglomerated and Sintered gray-black spherical or near-spherical particles with good flowability.
  • The maximum service temperature is up to 500℃.
  • The dense coating has high hardness and excellent resistance to abrasive wear, fretting wear, adhesive wear, erosion wear, and corrosion wear.
  • Nickel has better corrosion resistance than Cobalt, especially in wetting and corrosion environment.
  • Mainly used in oilfield equipment (harsh corrosion performance requirements), the petrochemical industry, ball valves, offshore equipment, parts, etc.

Grade & Chemical Composition

Grade

Chemical Composition (Wt, %)

W

T. C 

Ni

Fe

O

ZTC4BD*

Balance

5.0 – 5.3

16.5 – 17.5

≤ 0.2

≤ 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

ZTC4B51D

           WC – Ni

83/17

Agglomerated

& Sintered

– 53 + 20

≥ 4

≤ 18
  • HVOF

(JP5000 & JP8000, DJ2600 & DJ2700, JetKote,

Woka Jet, K2)

  • HVAF
  • APS

ZTC4B53D

– 45 + 20

≥ 4

≤ 18

ZTC4B52D

– 45 + 15

≥ 4

≤ 18

ZTC4B81D

– 45 + 11

≥ 4

≤ 18

ZTC4B54D

– 38 + 10

≥ 4

≤ 18

ZTC4B82D

– 30 + 10

≥ 4

≤ 30
We can tailor-make different particle size distributions and apparent densities for various applications.
Recommended Spray Parameters (HVOF)

Coating Properties
Material

WC – 17Ni

Hardness (HV0.3)

950 – 1200
Manufacturing

Agglomerated & Sintered

Bonding Strength (MPa)

> 70MPa
Size Fraction (µm)

– 45 + 15

Deposited efficiency (%)

40 – 50%
Spray Torch

JP5000

Porosity (%)

< 1%
Nozzle (inch)

4

Kerosene (L/h)

23

Oxygen (L/min)

900

Carrier gas (Ar) (L/min)

8.5

Powder feed rate (g/min)

80 – 100

Spraying distance (mm)

340 – 380