Study of durability of (molybdenum-copper)-black coatings in relation to their use as solar selective absorbers
✍ Scribed by K.M. Yousif; B.E. Smith; C. Jeynes
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 413 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0960-1481
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✦ Synopsis
In this work (Mo-Cu)-black coatings on Ni-plated Cu substrates have been prepared by. electrooeposition. Their stability and durability has been investigated. The durability tests were c .ao'ied out in two forms; accelerated ageing, and weathering. Reflectance measurements were used to evamate both solar absorptance (t~) and thermal emittance (e) of the coatings. The coatings have been cnaracterised before and after durability testing, using spectrophotome.try together with other techniques, such as electron microscopy, X-rays, and ion'beam. The mare degradation modes of these coatings are toss ot water, diffusion ofthetai atoms, and oxidation. (Mo-Cu)-lSlack coatings undergo some changes in tx and e during outdoor ageing.