The change occurred in W/ZrC composite properties by using nano reactants

In this article the effect of using nano reactants in the properties of W–ZrC composite fabricated by hot-press and reaction sintering has been evaluated. At first the W and ZrC powders were hot-pressed to produce W/ZrC composite and then the WC/ZrO2 and the WC/ZrSiO4 mixture were reaction sintered. The starting powders were selected in nano size to see the difference. In the case of using nano reactants the amount of unreacted and unwanted phases reduced and the reaction progressed better. Also the evaluated properties including density, hardness and modulus of elasticity are better in W/ZrC composite made by nano reactants.

► The density, hardness and modulus of elasticity improve in nano composite.
► By using nano reactants the amount of unreacted and unwanted phases reduces.
► The hot-pressed composite contains better properties.
► RS is cheaper than HP, because of the cheaper apparatus and raw materials.