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Molybdenum-based composite powder (Molybdenum/NiCr and Molybdenum/CoCr) deposited on SKD 61 (AISI – H-13) substrates are used as a preferred die (mould) material (khan Pt. al 2011). The durability of these coatings on cylindrical specimens against soldering has also been investigated by immersing them in the molten aluminum alloy (ADC-12) for 25 hours at 670˚C.
Stock Material: Agglomerated and sintered MoB-CoCr powder
The nominal composition of metal anti-stick coating:
Nominal Composition | Wt.% |
Molybdenum Boride | Base |
Total boron | 8.0 – 8.5 wt |
Cobalt | 25 – 28% wt |
Chrome | 13.5-15% wt |
Typical Applications of Molybdenum Boride Anti-Stick Coatings
Feature | S.I.Units |
apparent metallographic porosity | <1.5% |
bond strength to carbon steel (@ 500 microns ): | )70 MPa (10,000 PSI) |
Hardness | 1000-1200HV300 |
Typical as-sprayed roughness Ra: | 2-3.2μm |
Maximum coating thickness | 750micros |
Maximum working temperature | 900°C |