Hot Hardness Behavior of Ni-W-P Plating

Abstract

The hot hardness of Ni-W-P alloy deposits of various W and P contents were measured using a hot hardness tester. The hot hardness increased with the elevation of the temperature and indicated the maximum value, depending on the W and P contents of the deposits. The hardening of the alloy deposits with elevated temperature would be caused by precipitation of Ni, Ni₄W and Ni₃P particles from an amorphous structure.