Laser remelting of alumina tile surfaces: corrosion testing in aqueous solution


Yilbas B. S. , Khaled M., Karatas C.

CORROSION ENGINEERING SCIENCE AND TECHNOLOGY, cilt.46, ss.477-480, 2011 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 46 Konu: 4
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1179/147842209x12476568584331
  • Dergi Adı: CORROSION ENGINEERING SCIENCE AND TECHNOLOGY
  • Sayfa Sayıları: ss.477-480

Özet

Laser treatment of alumina surfaces in a nitrogen gas environment was carried out and the corrosion response of the resulting surfaces is examined. The corrosion tests were carried out using 5% NaCl solution for seven days, with continuous steering by a magnetic stirrer. Metallurgical and morphological changes in the laser irradiated region are examined using the scanning electron microscope, optical microscope, X-ray diffraction. It was found that formation of nitride (AlN) compounds was evident with a compact and dense structure formed in the laser irradiated region. Moreover, a few shallow pit sites are evident around the crack tips after the static corrosion tests, especially at a high laser output power.