Ni–P amorphous phases obtained by Nd–YAG pulsed laser alloying of deposited Ni–P coating with aluminum |
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Affiliation: | 1. State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China;2. Department of Mechanical Engineering, Curtin University, Perth, WA 6845, Australia |
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Abstract: | Ni–P electroless deposited coating with crystalline morphology was prepared on aluminum substrate. A Nd–YAG pulsed laser was used to alloy the materials at the condition of power density 5.36 × 109 W/m2 and scanning speed 3.0 mm/s. In the laser alloyed layer, Ni–P amorphous phases were found by means of TEM. Electron diffraction patterns and X-ray diffraction results showed that these Ni–P amorphous phases were decomposed as Ni and Ni3P equilibrium phases when tempered at temperature over 300 °C. |
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