Fabrication of Highly Adhesive Grits Abrasive Wheels by Electroless Composite Plating with Ultrasonic Vibration

无电塑料的cBN粗糙的轮子，生活依赖于格栅粘合剂和在界面上的投影高度，已经被应用于研磨的铁材料。本文介绍了一个用无电复合材料制作的高粘合剂gratsabrasive wheels用超声波振动来改善轮子的生活的新颖过程。cBN格栅和Ni-P矩阵之间的理想接口预计会在矩阵一侧形成表面形态，无电平板在363 K和15个不同的超声波放大器（X_a）中携带363 K。存款率是根据每个存款的厚度来估计的。它增加了X_a到11 μm，然后它减少了X_a到12μm。X_a的最大沉积率为11· m大于1.6倍，而没有超声波。沉积率中的增加是通过在极化测量中的交换电流中的增加来确认的，由于超声波在基底表面和镍供应中的分离，超声波导致氢泡沫的分离。在对比度下，沉积率中的退化被解释为塑料矩阵到空化的破坏，而界面形态学被观察到表面准备好了，而且没有超声波。这个界面是一个平坦的或轻微的下沉形状，在没有超声波振动的情况下。在相反的情况下，它展示了用超声波应用的Heap-up形态学。Heaping-up高度和宽度取决于A，并且在X_a的11 μm上成为最大值。使用最好的界面形态学，粘合剂强度比没有在水平推测测试中应用超声波的情况高出20%，这也是在FEM的压力分析中可靠地确认的。Hence，用超声波振动的无电平板工艺对高粘合剂的制造有效，因为界面展示了heaping-up形态学。

Electroless plated cBN abrasive wheels, which life is dependent on the grit adhesion and the projection height at the interface, have been applied to grind ferrous materials. This paper presents a novel process of fabrication of highly adhesive grits abrasive wheels by electroless composite plating with ultrasonic vibration to improve the wheel life. The ideal interface between cBN grits and Ni-P matrix is expected to be heaping-up morphology in the matrix side.Electroless plating was carried out at 363 K for 15 ks with different vibrational amplitudes (X_a) of ultrasound. The deposition rate was estimated by measuring each deposit thickness. It increases, with X_a up to 11 μm, however, it decreases beyond X_a of 12μm. The maximum deposition rate at X_a of 11・ m is 1.6 times higher than that without ultrasound. An increase in the deposition rate is confirmed by an increase in the exchange current in polarization measurements, since the ultrasound promotes the separation of hydrogen babbles at the substrate surface and the supplies of Ni^<2+> H_2Po_2^-. In contrast, a decrease in the deposition rate is explained by the destruction of plated matrix due to cavitations.The interfacial morphology was observed on surface prepared with and without ultrasound. The interface is a flat or slightly sink-shape in the case without ultrasonic vibration. On the contrary, it exhibits heaping-up morphology with applying ultrasound. The heaping-up height and width depend upon A, and become the maximum at X_a of 11 μm. With the best interfacial morphology, the adhesive strength becomes 20 % higher than that without applying ultrasound in the horizontal pushing away tests, this is also qualitatively confirmed in stress analysis of FEM. Hence, electroless plating process with ultrasonic vibration is effective for the fabrication of highly adhesive grits abrasive wheels, since the interface exhibits heaping-up morphology.