Abstract:
The invention provides a chemical-mechanical polishing composition containing (a) an abrasive selected from wet-process silica, alpha alumina, fumed alumina, ceria, zirconia, titania, and combinations thereof, (b) an oxidation catalyst, (c) a non-transition metal sulfate salt, (d) a complexing agent, (e) hydrogen peroxide, (f) a nonionic surfactant, (g) an anionic surfactant, and (h) water. The polishing composition has a pH of about 1 to about 5, and the polishing composition is substantially free of a peroxydisulfate salt. 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, an azole ring, and water, wherein the polishing composition has a pH of about 7 to about 11. The invention further provides a method of polishing a substrate with the polishing composition.
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 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:
The invention provides a chemical-mechanical polishing composition and a method of chemically-mechanically polishing a substrate, such as a nickel-phosphorous substrate. The composition contains water, silica particles, a first alcohol comprising one or more of monohydric alcohol, polyhydric alcohol, and diglycol, a second alcohol in the form of polyvinyl alcohol, a nickel complexing agent, and optionally hydrogen peroxide, pH adjuster, and/or biocide. 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:
The invention provides a polishing composition comprising (a) silica, (b) one or more compounds that increases the removal rate of silicon, (c) one or more tetraalkylammonium salts, and (d) water, wherein the polishing composition has a pH of about 7 to about 11. The invention further provides a method of polishing a substrate with the polishing composition.