Polishing composition

Patent metadata

Field	Value
Publication number	US-9994748-B2
Application number	US-201414910839-A
Country	US
Kind code	B2
Filing date	Jul 17, 2014
Priority date	Aug 9, 2013
Publication date	Jun 12, 2018
Grant date	Jun 12, 2018

Abstract

[Problem] An object is to provide a polishing composition which can improve smoothness of a surface of an alloy material to obtain a highly glossy surface, and can obtain a high-quality mirror surface having significantly reduced scratches or the like.
[Solution] There is provided a polishing composition which is used for polishing an alloy material, and which comprises abrasive grains and an additive which does not form a complex with specific metal species and is adsorbed on a surface of the alloy to exhibit an anticorrosive effect.

First claim

The invention claimed is:

1. A polishing method for polishing an alloy material using a polishing composition wherein the polishing composition comprises:
abrasive grains; and
an additive which does not form a complex with specific metal species and is adsorbed on a surface of the alloy to exhibit an anticorrosive effect and
the additive is represented by the following formula (I):
Z—O-(AO) n H  (I),

wherein Z is a hydrophobic portion, and the hydrophobic portion is a substituted or unsubstituted alkyl group or aryl group having a carbon number of 5 or more and 15 or less,

A is an alkylene group having a carbon number of 1 or more and 3 or less,
n is an integer of 1 or more and 50 or less and
wherein a main component of the alloy material is at least one member selected from the group consisting of aluminum, titanium, iron, nickel, and copper.

2. The polishing method for polishing an alloy material according to claim 1 , wherein the abrasive grains are made of silica.

3. The polishing method for polishing an alloy material according to claim 1 , wherein an average aspect ratio of primary particles of the abrasive grains is 1.10 or more.

4. The polishing method for polishing an alloy material according to claim 1 , wherein the main component of the alloy material is at least one member selected from the group consisting of aluminum, iron, and nickel.

5. The polishing method for polishing an alloy material according to claim 1 , wherein the main component of the alloy material is aluminum.

6. The polishing method for polishing an alloy material according to claim 1 , wherein the main component of the alloy material is aluminum, and comprises at least one member of metal element selected from the group consisting of silicon, magnesium, iron, copper, and zinc at a content of 0.5% by mass or more and 20% by mass or less with respect to a total amount of the alloy material.

7. A method for manufacturing an alloy material, comprising a step of polishing by the polishing method according to claim 1 .

Assignees

• Fujimi Inc

Inventors

• Asano Hiroshi
• Asai Maiko
• Morinaga Hitoshi
• Tamai Kazusei

Classifications

• C09K3/1445

  the coating consisting exclusively of metals · CPC title

• C09K3/1436 Primary

  Composite particles, e.g. coated particles · CPC title

• C09G1/02

  containing abrasives or grinding agents {(abrasives as such C09K3/14; polishing of semi-conductors H10P52/40)} · CPC title

• B24B37/00 Primary

  Lapping machines or devices; Accessories (B24B3/00 takes precedence) · CPC title

• B24B1/00

  Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes · CPC title