Vol. 11, Issue 10, Part D (2025)

Abstract
An effective technique has been developed to prepare non-magnetic Ni(W) solid solutions using Ni and ammonium metatungstate (AMT) as raw materials and to be used as binders of non-magnetic Ti(C, N) based cermet. Powder particles using AMT as a source of tungsten have a higher contact area and activity between W and Ni. For this reason, the mutual diffusion between Ni and W and the solid-state reaction is promoted, and the amount of W diffusing in Ni is higher. The saturation magnetization values of Ni(W) solid solution powders using AMT as a source of W at suitable diffusion conditions (550 °C×2 h + 800 °C×2 h in H₂ atmosphere) were significantly lower compared to Ni(W) solid solution prepared using W and pure Ni. The degree of nonmagnetization of Ti(C, N) cermet with Ni(W) solid solution prepared from Ni and AMT as binder was superior to Ti(C, N) cermet with pure Ni as binder.