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Study on Ni/P-coating deposition and interface behavior in solid-solid/ solid-liquid compositing process
DOI:10.1016/j.jmrt.2024.05.180.png)
Abstract
En 中文
Electroless Ni/P coating was obtained on the carbon -material substrate of graphite blocks and woven carbon fibers through a new plating solution, and three different temperatures and pH values were respectively adopted during the deposition process. The lactic acid presented an excellent stability capability, and the coatings with compact structure and appropriate P content could be generated under 343 K and pH 4.0, the reaction activation energy of which was around 110 kJ/mol. The coating with amorphous structure was more active than the metallic Ni with crystalline structure to react with Al, and the bonding interface between Ni/P-coating and Almatrix was composed of two layers of single-phase structure, namely Al 3 Ni and Al 3 Ni 2 . The preferred reaction product in the solid -solid compositing process was Al 3 Ni, and then Al 3 Ni 2 was formed between the Ni layer and Al 3 Ni layer because of the accumulation of Ni atoms. While, the preferred reaction product in the solid -liquid compositing process was Al 3 Ni 2 , and Al 3 Ni phase was proved by the pulsed magnet field to be generated during the subsequent solidification process.
Keywords:
Carbon/Al composites
Electroless plating
Interface behavior
Pulsed magnet field
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