SBIR Phase II: Development of High Performance, Environmentally Benign Lapping Fluids for Hard Disk Drive Manufacturing Applications

这个小型企业创新研究（SBIR）第二阶段项目将开发新型的，水溶性的，环境友好的，天冬氨酸共聚酰胺共聚物用作铝钛碳化物（AlTiC）巨磁阻（GMR）读写头研磨液添加剂。 努力将针对细化这些共聚物的组合物，使得它们在AlTiC表面上表现出最大的吸附静电荷效应。 这将能够快速去除研磨过程中形成的AlTiC切屑，从而生产出与目前生产的GMR磁头相比具有上级表面质量和均匀性的GMR磁头。 此外，还将使用Zeta电位电化学技术更详细地表征这些共聚物在AlTiC陶瓷GMR头表面以及其金属传感器层上的吸附特性。 将建立一个优化的程序，用于合成这些共聚物，使他们能够经济地大量生产。最后，该公司将与硬盘驱动器制造商密切合作，并将这些共聚物配制的水性研磨液整合到其目前的GMR磁头制造业务中。 从商业和工业角度来看，由这些共聚物配制的研磨液将使最后一家垂直整合的国内硬盘制造商能够更经济有效地生产GMR读写磁头，从而增强公司在市场上的竞争力。 未来的数据存储技术也可能受益于这些流体，因为它们很可能仍然需要高精度研磨或相关的超精加工技术来抛光其驱动部件。

This Small Business Innovation Research (SBIR) Phase II project will develop novel, water soluble, environmentally benign, aspartate co-aspartamide copolymers for use as aluminum titanium carbide (AlTiC) Giant Magnetoresistive (GMR) Read Write Head lapping fluid additives. Efforts will be directed towards refining the composition of these copolymers such that they exhibit maximum adsorption & electrostatic charging effects upon AlTiC surfaces. This will enable rapid removal of AlTiC swarf formed during lapping producing GMR Heads of superior surface quality and uniformity compared to those manufactured currently. Furthermore, the adsorption properties of these copolymers upon AlTiC ceramic GMR Head surfaces as well as their metallic sensor layers will also be characterized in greater detail using Zeta Potential & Electrochemical Techniques. An optimized procedure for synthesizing these copolymers will be established enabling them to be economically produced in bulk quantities. Finally, the company will work closely with hard drive manufacturers and will integrate the aqueous lapping fluids formulated from these copolymers into its current GMR Head manufacturing operations. Commercially and from an industrial standpoint, lapping fluids formulated from these copolymers will enable the last vertically integrated domestic hard drive manufacturer to produce GMR Read Write Heads more economically & efficiently thereby enhancing the company's competitiveness within the marketplace. Future data storage technologies may also benefit from these fluids since they will in all likelihood still require high precision lapping or a related super finishing technique to polish their drive components.