Exterior material of home appliance, home appliance including exterior material and manufacturing method of exterior material of home appliance

Patent metadata

Field	Value
Publication number	US-11655533-B2
Application number	US-201816609178-A
Country	US
Kind code	B2
Filing date	Apr 19, 2018
Priority date	Apr 28, 2017
Publication date	May 23, 2023
Grant date	May 23, 2023

Abstract

An exterior material of a home appliance having improved corrosion resistance and fingerprint resistance by changing a treatment method of a surface of the exterior material, and the home appliance including the same, and a manufacturing method therefor are provided. The method of manufacturing the exterior material of the home appliance, the method including applying a diamond like carbon (DLC) coating on the substrate to form a DLC coating layer; and conducting anti-fingerprint coating to form the anti-fingerprint coating on the DLC coating layer.

First claim

The invention claimed is:

1. An exterior material of a home appliance comprising:
a substrate including a surface subjected to a passivation treatment;
a diamond like carbon (DLC) coating layer formed on the passivated surface of the substrate;
a buffer coating layer formed between the substrate and the DLC coating layer to improve adhesion between the substrate and the DLC coating layer; and
an anti-fingerprint coating layer formed on an upper surface of the DLC coating layer.

2. The exterior material of the home appliance of claim 1 , wherein the buffer coating layer includes a chrome buffer coating layer.

3. The exterior material of the home appliance of claim 1 , wherein the passivation treatment of the substrate includes electrolytic pickling using a phosphate pickling solution, and an electrolytic passivation treatment using a solution containing a dichromate acid passivating solution and an amine additive.

4. The exterior material of the home appliance of claim 1 , wherein an etching portion from which an oxide film is removed is formed on an upper surface of the substrate to increase adhesion to the DLC coating layer.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Shin Hyun Seok
• Kim Kwang Joo
• Koh Young Deog
• Kwak Jin O
• Byeoun Da Hyun
• Yoo Young Min
• Lee Kyung Hwan
• Lee Min Kyung

Classifications

• C23C16/26

  Deposition of carbon only · CPC title

• C25D11/38

  Chromatising · CPC title

• B05D1/02

  performed by spraying · CPC title

• F24C15/00

  Details · CPC title

• C23C16/0227

  by cleaning or etching · CPC title