Effect of Zinc (Zn) on Carcass of Diamond Tools

Diamond tool matrix is commonly composed of metal binder alloys such as Co, Ni and Fe, some of which may contain minor-tie alloying elements. Zinc (Zn) is one of the common minor-tie elements found in diamond tool matrix. It is added in small amounts to a metal binder alloy to improve its properties, including tribological, thermal, mechanical and electrochemical performance. Zinc plays an important role in the synthesis of metal binder alloys in diamond tool matrix, rendering them with improved properties over conventional alloys.

Zinc is added to the construction of diamond tool matrix in small amounts to form a strong metal binder alloy with good thermal and mechanical stability. It acts as a hardening element by enhancing the solution hardening effect in the matrix. This means that at a given temperature, the solubility of other alloying elements in the matrix is reduced and hardening effects are enhanced. This allows for the formation of a hard and wear-resistant phase of the matrix, which is critical in the performance of diamond tool matrix.

Zinc also contributes to the tribological properties of the diamond tool matrix, specifically with regards to its wear resistance and friction. When Zn is added to the matrix, it improves the sliding wear resistance, corrosion resistance, and the adhesive wear resistance of the binder alloy. This promotes better interfacial adhesion between the diamond particles and the matrix, thereby improving the durability and long-term performance of diamond tools.

Moreover, the inclusion of Zn in diamond tool matrix enhances the thermal stability and electrical conductivity of the matrix. The addition of Zn causes a reduction of thermal expansion coefficient of the matrix, resulting to more stable thermal properties. Additionally, Zn can enhance the electrical conductivity of the matrix, making it an excellent heat sink which minimizes the risk of thermal damage to the diamond particles during the sintering process.

In conclusion, the addition of Zinc (Zn) element to diamond tool matrix can indeed improve the properties of the matrix. It provides hardening and wear resistance effects in the metal binder alloys, promotes better interfacial adhesion, enhances the thermal stability and electrical conductivity of the matrix, and ultimately improves the performance and functionality of diamond tools. Therefore, the use of Zn-alloyed diamond tool matrix is a promising approach to providing durable and efficient tools for various industrial applications.