公开(公告)号：WO1988002538A1

公开(公告)日：1988-04-07

申请号：PCT/GB1987000692

申请日：1987-10-02

Applicant: THE UNIVERSITY OF TORONTO INNOVATIONS FOUNDATION ,  WALSH, Pauline, Margaret

Inventor： THE UNIVERSITY OF TORONTO INNOVATIONS FOUNDATION ,  WALSH, Pauline, Margaret ,  MOSKOVITS, Martin ,  SCHMIDHALTER, Beat

IPC: G11B05/858

CPC classification number: G11B5/84 ,  G11B5/858 ,  Y10S205/922

Abstract: Process for preparing magnetic recording material by depositing ferromagnetic material in particulate form into an aluminum substrate. The aluminum substrate is prepared by cleaning an aluminum or aluminum metal containing substrate; anodizing the cleaned metal substrate, to produce a suitably pitted or porous oxide substrate surface; and rinsing the anodized substrate,substantially to remove therefrom acid residues remaining from the anodizing step. The substrate in contact with a liquid solution of a salt of at least one ferromagnetic metal is then subjected to electrolysis with alternating current, to deposit the metal into the pores of the oxide in small-particle, ferromagnetic form while adjusting and controlling the frequency of the alternating current to obtain discrete particles in the pores assembled in an anisotropic configuration. Excess liquid solution is subsequently removed from the so-treated substrate. The material is then preferably coated with a suitable resin or polymer to seal the pores and then polished to generate a suitable surface for reading or writing by magnetic heads.

Abstract translation: 通过将颗粒形式的铁磁材料沉积到铝基底中来制备磁记录材料的方法。 通过清洗含铝或铝金属的基材来制备铝基板; 阳极氧化清洁的金属基底，以产生适当的凹坑或多孔的氧化物衬底表面; 并漂洗阳极氧化的基底，基本上从其中除去残留在阳极氧化步骤中的酸残余物。 接触至少一种强磁性金属的盐的液体溶液的基片随后用交流电进行电解，将金属以小粒子铁磁形式沉积在氧化物的孔中，同时调节和控制 交流电流以获得在各向异性配置中组装的孔中的离散颗粒。 随后从经处理的底物中除去过量的液体溶液。 然后优选用合适的树脂或聚合物涂覆材料以密封孔，然后抛光以产生用于磁头读取或写入的合适表面。