Fig. 10. SEM images of Ti₄AlB₂N composites at different sintering temperatures: (a) 950 °C, the arrow and circle indicate voids and cracking of the composite surface; (b) 1050 °C, the circle indicates grain boundary development; (c) 1150 °C, the marks indicate the development of grain growth and agglomeration of particles; (d) 1250 °C, the marks show a denser packing structure; and (e) 1325 °C, the corresponding marks indicate a highly dense and well-sintered composite with minimal porosity and large, well-bonded grains with few MAX phase layers.