| abstract |
The application relates to the technical field of aluminizers, and particularly discloses a novel sandwich-structure aluminizer and a preparation method thereof. A novel sandwich structure aluminizer is of a four-layer sandwich structure of a basal layer/an aluminum layer-an aluminum oxide layer-an aluminum layer and comprises the basal layer, a first aluminizer layer plated on the basal layer, an aluminum oxide layer plated on the first aluminizer layer and a second aluminizer layer plated on the aluminum oxide layer; the first aluminum layer has a thickness of 200-500 angstroms, the aluminum oxide layer has a thickness of 1000-2000 angstroms, and the second aluminum layer has a thickness of 200-500 angstroms. The aluminium oxide layer reduces the second aluminized layer and takes place by the phenomenon of corroding, and first aluminized layer has further kept off vapor and alkaline cement mortar and has taken place the reaction with the second aluminized layer, and the heat reflection effect of this application stratum basale/first aluminized layer-aluminium oxide layer-four layers sandwich structure aluminizer of second aluminized layer is good, and corrosion resistance is strong, and the reliability is high. |