公开(公告)号：US5441788A

公开(公告)日：1995-08-15

申请号：US148136

申请日：1993-11-03

申请人： Darrel R. Bloomquist ,  Stephan P. Howe ,  Arun K. Agarwal

发明人： Darrel R. Bloomquist ,  Stephan P. Howe ,  Arun K. Agarwal

IPC分类号： G11B5/82 ,  G11B5/73 ,  G11B5/738 ,  G11B5/84 ,  B32B3/02 ,  B32B3/10 ,  G11B5/66

CPC分类号： G11B5/7325 ,  G11B5/8404 ,  Y10S428/90 ,  Y10T428/12465 ,  Y10T428/12736 ,  Y10T428/12743 ,  Y10T428/1275 ,  Y10T428/12764 ,  Y10T428/12806 ,  Y10T428/12847 ,  Y10T428/12854 ,  Y10T428/24355 ,  Y10T428/265 ,  Y10T428/31

摘要： A magnetic recording disk has a layered structure comprising a metal substrate, a layer of NiP atop the metal substrate, the NiP layer having a surface roughness of less than 2.0 nanometers RMS, a metal layer over the polished NiP layer, the metal layer having a desired textured outer surface as a result of the sputter deposition, the textured outer surface being characterized by a cobblestone-like metallic grain structure with between 10 and 100 grains per square micron, an RMS surface roughness of between 1.0 and 8.0 nanometers, and with peak heights as measured from the mean plane of the surface over a 10 micron square area of between 2.0 and 20.0 nanometers, a magnetic layer atop the metal layer.

摘要翻译： 磁记录盘具有包括金属基板，金属基板顶部的NiP层，NiP层的表面粗糙度小于2.0纳米RMS的层状结构，在抛光的NiP层上的金属层，金属层具有 作为溅射沉积的结果的期望的纹理外表面，纹理化外表面的特征在于具有10至100个晶粒/平方微米之间的鹅卵石状金属晶粒结构，1.0至8.0纳米的RMS表面粗糙度，以及峰 从表面的平均平面测量的，在2.0至20.0纳米之间的10微米正方形面积上测量的高度，在金属层顶部的磁性层。