Sensor installing and protecting method for e.g. rotating vane of low pressure turbine in turbojet engine, involves performing laser densification of alumina deposition surface of covering layer by localized re-melt

摘要

The method involves depositing an electrically insulative sub-layer (3) on a substrate by spraying alumina. A sensor is placed on the electrically insulative sub-layer. A covering layer (6) is deposited on the sensor and the electrically insulative sub-layer by spraying alumina. The laser densification is performed on an alumina deposition surface (6a) of the covering layer by localized re-melt.