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A two-layer boron carbide coating is deposited on a graphite substrate by chemical vapor deposition from a CH 4 /BCl 3 /H 2 precursor mixture at a low temperature of 950°C and a reduced pressure of 10KPa. Coated substrates are annealed at 1600°C, 1700°C, 1800°C, 1900°C and 2000°C in high purity argon for 2h, respectively. Structural evolution of the coatings is explored by...
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