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Heat Treatment

With heat treatment the chemical nickel layer is treated at high temperatures to obtain a certain compactness of the final layer, improving its adherence, and to increase the level of superficial hardness.

The metallic detail, as soon as it is treated, has a standard superficial hardness of about 500 HV100.

The situation of the crystal lattice, as soon as the layer is placed, is not stable and it is called α-nickel (compact hexagonal crystal shape). Thanks to the heat treatment it can transformed to β-nickel (face-centred cubic shape), which presents a more stable composition and a higher superficial hardness (about 1000 HV100).

In general, to obtain a surface hardness of 1000 HV100 a heat treatment of 10 hours at 300° C is enough or, alternatively, 1 hour at 400° C. Before starting the heat treatment, anyway, the degree of deformation of the basic material has to be taken into account.

NICASIL

NICASIL s.r.l. has been the leader in Italy since the seventies on the sector of the electroless nickel coating. In fact, either Nicasil Process have been the most important brands of the electroless nickel coating and the metal surface treatments in Italy.

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