Abstract: Mask (10, 10?, 21, 22, 30) for use in coating a carbon-carbon composite brake disc (25) with anti-oxidant. The mask is composed of carbon-carbon composite material or nonreactive ceramic material. The mask is configured with edge ridges (11, 13, 34, 36) that are aligned with the outer and inner annular diameters of the carbon-carbon composite brake disc, a gas flow channel (12, 32) between the ridges, and a gas access port (18, 40) that allows gas to enter the gas flow channel. The mask may also include a gas exit port (16) having a valve (17) operatively connected thereto, so that gas flow may be restricted when pressure within the mask and carbon-carbon composite brake disc falls below a specified minimum value.

Abstract: Mask (10, 10?, 21, 22) for use in coating a carbon-carbon composite brake disc (25) with anti-oxidant. The mask is composed of carbon-carbon composite material or nonreactive ceramic material. The mask is configured with edge ridges (11, 13) that are aligned with the outer and inner annular diameters of the carbon-carbon composite brake disc, a gasflow channel (12) between the ridges, and a gas access port (18) that allows gas to enter the gasflow channel. The mask may also include a gas exit port (16) having a valve (17) operatively connected thereto, so that gas flow may be restricted when pressure within the mask and carbon-carbon composite brake disc falls below a specified minimum value.