期刊
SURFACE & COATINGS TECHNOLOGY
卷 206, 期 8-9, 页码 2521-2524出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2011.11.004
关键词
Electroless plating; Ni-Cu-B layer; Cemented carbides; Brazability; Shearing strength
Electroless plating was applied to prepare Ni-Cu-P layer on the surface of YT15 cemented carbide. The effect of electroless plating parameters (pH values, copper sulfate concentration, and reaction temperature) on brazability of cemented carbide to steel was investigated by testing the weld shear strength between the cemented carbide and steel substrate. The surface's and interface's morphologies of the layer and the brazing seam were analyzed by scanning electron microscopy. The results show that the electroless plating Ni-Cu-P layer apparently improves the brazability of cemented carbide to steel. In addition, the electroless plating parameters significantly affect the brazability of cemented carbide to steel substrate. Under optimal conditions: the concentration of copper sulfate (CuSO4) is 1.25 g/L, pH value is 11, and plating temperature is 90 degrees C, the Ni-Cu-P layer is homogeneous, compact, with good metallurgical bonding between the Ni-Cu-P layer, the cemented carbide and the solder. The weld shear strength of copper brazing is up to 480 MPa, and the brazability reaches the best. (C) 2011 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据