Composite number

Engineering

Aerospace engineering

Materials science

Borosilicate glass

Layer (electronics)

Ablation

Nose

Carbon fibers

Anatomy

Torch

Reinforced carbon–carbon

Composite material

Corrosion

Medicine

Welding

Corrosion Science

Nose-shaped C/C-H fB2-SiC with good mechanical property were fabricated by PIP. During ablation in 2.38 MW/m2 using oxyacetylene torch, the composites showed good ablation performance and structural stability. Because of the nose-shaped feature, protective ablation products including borosilicate glass, HfO2-glass and HfO2 scale covered on the surface according to their distances to the nose tip, which were beneficial for enduring the heating conditions. As heat flux increased to 4.18 MW/m2, more serious ablation occurred, and the protective performance degradation of the ablation products accelerated, especially at the nose tip, the partly ruptured HfO2 layer was difficult to withstand the enhanced denudation.

Ablation behavior of nose-shaped HfB2-SiC modified carbon/carbon composites exposed to oxyacetylene torch