Abstract
A new cermet film Nb-NbN, deposited on the stainless steel substrate by direct reactive magnetron sputtering, was reported as solar selective absorptive coating. Some fundamental studies on microstructure and optical properties of the Nb-NbN cermet films were carried out by XRD, EDX, SEM and spectrophotometer. A solar absorptivity of 0.94 and a normal emissivity of 0.16 at room temperature were achieved for the coating. Thermal stability was investigated at 350°C and 500°C and it was observed that the absorptivity was changed in a range from 0.92 to 0.94 and the surface emissivity varied firstly from 0.16 to 0.14 and then increasing to 0.19 when the temperature was increased from room temperature to 350°C and up to 500°C.
| Original language | English |
|---|---|
| Pages (from-to) | 899-904 |
| Number of pages | 6 |
| Journal | Advanced Materials Research |
| Volume | 24-25 |
| State | Published - 2007 |
| Event | PRICM 6: The 6th Pacific Rim International Conference on Advanced Materials and Processing - Jeju Island, Korea, Republic of Duration: 5 Nov 2007 → 9 Nov 2007 |
Keywords
- Magnetron sputtering
- Nb-NbN film
- Solar selective coating
- Thermal stability
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