Fellow of the Academy of General Dentistry (FAGD) Practice Exam 2026 - Free FAGD Practice Questions and Study Guide

Dispersion strengthening in ceramics refers to the method of enhancing mechanical properties, particularly strength and toughness, by introducing fine, dispersed secondary phases or particles into the ceramic matrix. This process can significantly improve the material's resistance to fracture, as the dispersed particles can impede the movement of dislocations and crack propagation, leading to enhanced overall durability.

When discussing dispersion strengthening, two common statements might refer to its capability to improve toughness and its impact on thermal properties. An understanding of how these mechanisms interact helps clarify why both statements would be considered true: the introduction of a dispersed phase not only boosts toughness but can also influence other properties such as thermal shock resistance, making the overall performance of the ceramic more favorable.

This understanding aligns with the principles of material science, where composite structures exhibit enhanced properties compared to their individual components. Thus, recognizing that both statements accurately describe the benefits of dispersion strengthening justifies the conclusion that both are true.