2012 Volume 24 Issue 1 Pages 40-46
To confirm that IR-coated iron wire meets the criterion of the Ministry of Land, Infrastructure and Transport, we carried out wear tests and accelerated corrosion tests after the SUV(metal halide lamp) tests of 625h which were cleared to be more than twentyfold the WS-A(sunshine weather meter) tests for 7,500h as shown in the previous paper. Furthermore, a cross sectional analysis of surface changes and changes of C=O absorption in the IR spectrum were carried out on 6.8 year old specimens cut from IR-coated iron wire in the field. In conclusion, the life of IR-coated iron wire was shown to be equal to 30 years or more, and from this and previous paper, we evaluated that SUV test could be used for an alternative test in twentieth of the time it took for WS-A test.
