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Table 2 Typical properties of alumina disc

From: Optimization of wear loss in silicon nitride (Si3N4)–hexagonal boron nitride (hBN) composite using DoE–Taguchi method

Designation

Purity (%)

Density (g/cc)

Max service temp. (°C)

Avg. surface roughness Ra (μm)

Alumina (Al2O3)

99.8

3.90

1800

1.791