发明申请
US20080121225A1 RADIATION SELECTIVE ABSORBER COATING FOR AN ABSORBER PIPE, ABSORBER PIPE WITH SAID COATING, AND METHOD OF MAKING SAME 有权
用于吸收管的辐射选择性吸收剂涂层,具有涂层的吸收管及其制造方法

RADIATION SELECTIVE ABSORBER COATING FOR AN ABSORBER PIPE, ABSORBER PIPE WITH SAID COATING, AND METHOD OF MAKING SAME
摘要:
The radiation selective absorber coating of the invention includes two or more barrier layers arranged over each other on a substrate surface, an infrared-range reflective layer arranged on the two or more barrier layers, and at least an absorption layer arranged over the infrared-range reflective layer and a final antireflection layer arranged over the absorption layer. The absorber pipe, especially for a parabolic trough collector, is a steel pipe, on whose outer side the radiation selective absorber coating is applied. In the method of making the absorber pipe a first oxide barrier layer is provided on the outer side of the steel pipe by thermal oxidation, and then a second barrier layer, an infrared-range reflective layer, an absorption layer and a final antireflection layer are applied by gas-phase physical deposition.
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