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Nickel-manganese powder for diamond synthesis

Use

Fast-quenched powder of the nickel-manganese alloy AP-MnNi40 in flake form is widely used in producing synthesized diamonds of various sizes.

The powder is used as a catalyst in a reaction mixture with pure graphite.

Chemical composition

Grade Nominal composition, %
Mn Ni C
AP-MnNi40 grade A1 base 40 ≤ 0.3
AP-MnNi40 grade A2 base 40 ≤ 0.3
AP-MnNi40 grade B1 base 40 0.8-1.5
AP-MnNi40 grade B2 base 40 0.8-1.5
AP-MnNi40 grade C1 base 40 1.5-2.5
AP-MnNi40 grade C2 base 40 1.5-2.5

Powder classes by particle size

Powder class Base fraction, microns Packed density, g/cm3
1 ≤ 100 3.7-4.5
2 50-315 2.0-3.0
3 100-400 1.8-2.5
3A 100-400 2.5-3.0
4 315-800 1.4-2.0
5 400-1250 1.0-1.3
6 400-1250 1.4-1.6
7 400-1250 1.65-2.0

Key technological advantages of the catalyst:

  • high homogeneity of the reaction mixture with dispersive graphite;
  • the ability to vary the packed density of the reaction mixture;
  • the structure's high homogeneity and grain fineness;
  • minimal content of impurities in the alloy;
  • good plasticity and shapability ensure a wide field of contact between the catalyst and the graphite;
  • the catalyst boosts the level of graphite transmutation and the hardness and sizes of the diamonds.