Research on Micro-Structure of Electroless Ni-B Coatings

Autor: Jian Xin Pan, Ru Jun Chen, Cui Lan Wu
Rok vydání: 2012
Předmět:
Zdroj: Advanced Materials Research. :1641-1645
ISSN: 1662-8985
DOI: 10.4028/www.scientific.net/amr.602-604.1641
Popis: By means of X-ray diffractometry (XRD) and transmission electron microscope (TEM), the micro-structure of 5 different Ni–B alloy coatings prepared by electroless plating with Potassium borohydride content ranging from 0.2 to approximately 1.4g/L was studied The influence of the KBH4 content in the coatings on their micro-structure was also investigated. It has been found that Ni–B alloy coatings showed amorphous sytuctue with XRD while with TEM it showed a combination of amorphous and nanocrystalline structure. It was further revealed that the amorphous structure increased with increasing KBH4 content, which means that Ni-B alloy coating prepared with increasing KBH4 content undergoes a transition process as follows: nanocrystalline → crystalline → amorphous structure. Results indicated that the micro-structure of Ni-B alloy coatings should be studied by both methods of XRD and TEM.
Databáze: OpenAIRE