Chemical mechanical polishing method for tungsten

    公开(公告)号:US09984895B1

    公开(公告)日:2018-05-29

    申请号:US15815276

    申请日:2017-11-16

    摘要: A process for chemical mechanical polishing a substrate containing tungsten is disclosed to reduce corrosion rate and inhibit dishing of the tungsten and erosion of underlying dielectrics. The process includes providing a substrate; providing a polishing composition, containing, as initial components: water; an oxidizing agent; a dihydroxy bis-sulfide; a dicarboxylic acid, a source of iron ions; a colloidal silica abrasive; and, optionally a pH adjusting agent; providing a chemical mechanical polishing pad, having a polishing surface; creating dynamic contact at an interface between the polishing pad and the substrate; and dispensing the polishing composition onto the polishing surface at or near the interface between the polishing pad and the substrate; wherein some of the tungsten (W) is polished away from the substrate, corrosion rate is reduced, dishing of the tungsten (W) is inhibited as well as erosion of dielectrics underlying the tungsten (W).

    BRIGHTENING AND PASSIVATION OF STAINLESS STEEL SURFACES
    6.
    发明申请
    BRIGHTENING AND PASSIVATION OF STAINLESS STEEL SURFACES 审中-公开
    不锈钢表面的腐蚀和钝化

    公开(公告)号:US20150267307A1

    公开(公告)日:2015-09-24

    申请号:US14729431

    申请日:2015-06-03

    IPC分类号: C23F3/03 C23F1/28

    摘要: This invention relates to a composition for the brightening and/or passivating of stainless steel after pickling. The invention is based on the discovery that the presence of organic compounds containing multiple hydroxyl groups with at least 3, but not more than 8 carbon atoms as a further ingredient of passivating and brightening solution significantly increases the desmutting performance of pickled stainless steel surfaces. The compositions of the invention are especially useful for the passivating and brightening of stainless steel grades being alloyed with sulfur. The invention thus further encompasses a passivating and brightening process for pickled stainless steel surfaces wherein the stainless steel is alloyed with at least 0.10 at.-% of sulfur.

    摘要翻译: 本发明涉及酸洗后不锈钢的增白和/或钝化的组合物。 本发明基于以下发现:含有多个具有至少3个但不超过8个碳原子的羟基的有机化合物作为钝化和增亮溶液的另一成分的发现显着增加了酸洗的不锈钢表面的去污性能。 本发明的组合物对于与硫合金化的不锈钢等级的钝化和增亮是特别有用的。 因此,本发明进一步包括用于酸洗的不锈钢表面的钝化和增亮方法,其中不锈钢与至少0.10%(重量)的硫合金化。

    CMP COMPOSITION CONTAINING ZIRCONIA PARTICLES AND METHOD OF USE
    8.
    发明申请
    CMP COMPOSITION CONTAINING ZIRCONIA PARTICLES AND METHOD OF USE 有权
    包含ZIRCONIA颗粒的CMP组合物及其使用方法

    公开(公告)号:US20130313225A1

    公开(公告)日:2013-11-28

    申请号:US13477535

    申请日:2012-05-22

    摘要: The invention provides a chemical-mechanical polishing composition containing zirconia particles, a modifying agent that adheres to the zirconia particles, an organic acid, and water, as well as a method of using such a polishing composition to polish substrates and a method of using a polishing composition comprising zirconia particles, an organic acid, an oxidizing agent, and water to polishing substrates containing metal and oxide-based dielectric materials.

    摘要翻译: 本发明提供一种包含氧化锆颗粒,粘附于氧化锆颗粒的改性剂,有机酸和水的化学机械抛光组合物,以及使用这种抛光组合物抛光底物的方法和使用 包含氧化锆颗粒,有机酸,氧化剂和水的抛光组合物以研磨含有金属和氧化物基介电材料的基材。