Abstract:
The invention provides a chemical-mechanical polishing composition including (a) an abrasive comprising wet-process silica particles, (b) a water-soluble polymer, (c) an oxidizing agent, (d) a chelating agent, (e) a pH-adjusting agent, and (f) an aqueous carrier, wherein the pH of the polishing composition is about 1 to about 7. The invention also provides a method of polishing a substrate, especially a nickel-phosphorus substrate, with the polishing composition.
Abstract:
The invention relates to a chemical-mechanical polishing composition comprising silica, one or more organic carboxylic acids or salts thereof, one or more polysaccharides, one or more bases, optionally one or more surfactants and/or polymers, optionally one or more reducing agents, optionally one or more biocides, and water, wherein the polishing composition has an alkaline pH. The polishing composition exhibits a high removal rate and low particle defects and low haze. The invention further relates to a method of chemically-mechanically polishing a substrate using the polishing composition described herein.
Abstract:
The inventive method comprises chemically-mechanically polishing a substrate comprising at least one layer of silicon carbide with a polishing composition comprising a liquid carrier, an abrasive, and an oxidizing agent.
Abstract:
The invention provides a chemical-mechanical polishing composition containing aluminate-modified silica particles, a polyacrylamide, a heterocyclic film-forming agent, and water. The invention also provides a method of chemically-mechanically polishing a substrate, especially a nickel-phosphorous substrate, by contacting a substrate with a polishing pad and the chemical-mechanical polishing composition, moving the polishing pad and the polishing composition relative to the substrate, and abrading at least a portion of the substrate to polish the substrate.
Abstract:
The invention provides a polishing composition comprising silica, an aminophosphonic acid, a polysaccharide, a tetraalkylammonium salt, a bicarbonate salt, a compound comprising an azole ring, and water, wherein the polishing composition has a pH of 7 to 11. The invention further provides a method of polishing a substrate with the polishing composition.
Abstract:
The invention provides a chemical-mechanical polishing composition and a method of chemically-mechanically polishing a sapphire substrate. The composition contains a diamond abrasive and a pH adjuster. The method involves contacting the substrate with a polishing pad and the chemical-mechanical polishing composition, moving the polishing pad and the polishing composition relative to the substrate, and abrading at least a portion of the substrate to polish the substrate.
Abstract:
Chemical mechanical polishing (CMP) compositions and methods for planarizing a nickel phosphorus (NiP) substrate are described. A NiP CMP method comprises abrading a surface of the substrate with a CMP composition. The CMP composition comprises a colloidal silica abrasive suspended in an aqueous carrier having a pH of less than 2, and containing a primary oxidizing agent comprising hydrogen peroxide, a secondary oxidizing agent comprising a metal ion capable of reversible oxidation and reduction in the presence of NiP and hydrogen peroxide, a chelating agent, and glycine. The chelating agent comprises two or three carboxylic acid substituents capable of chelating to the metal ion of the secondary oxidizing agent.
Abstract:
The invention relates to a chemical-mechanical polishing composition comprising silica, one or more tetraalkylammonium salts, one or more bicarbonate salts, one or more alkali metal hydroxides, one or more aminophosphonic acids, one or more rate accelerator compounds, one or more polysaccharides, and water. The polishing composition reduces surface roughness and PSD of polished substrates. The invention further relates to a method of chemically-mechanically polishing a substrate, especially a silicon substrate, using the polishing composition described herein
Abstract:
The invention provides a polishing composition comprising (a) silica, (b) one or more compounds that increase the removal rate of silicon, (c) one or more tetraalkylammonium salts, and (d) water, wherein the polishing composition has a pH of 7 to 11. The invention further provides a method of polishing a substrate with the polishing composition.
Abstract:
The invention provides a polishing composition comprising (a) silica, (b) one or more compounds that increase the removal rate of silicon, (c) one or more tetraalkylammonium salts, and (d) water, wherein the polishing composition has a pH of 7 to 11. The invention further provides a method of polishing a substrate with the polishing composition.