Method of making heat treated coated article using diamond-like carbon (DLC) coating and protective film

US8003167B2 · kind B2 · utility

Assignee

• Guardian Industries Corp. · US

Inventors

• Alexey Krasnov · Brampton, CA
• Rudolph Hugo Petrmichl · Ann Arbor, US
• Jiangping Wang · Novi, US
• Nestor P. Murphy · Beverly Hills, US
• Maximo Frati · Ann Arbor, US
• Jose Nunez-Regueiro · Ann Arbor, US

Key dates

• Filing date: Jun 1, 2007
• Grant date: Aug 23, 2011
• Expiry date: Dec 13, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C2218/355
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

There is provided a method of making a heat treated (HT) coated article to be used in shower door applications, window applications, or any other suitable applications where transparent coated articles are desired. The method may include heat treating a glass substrate coated with at least a layer of or including diamond-like carbon (DLC) or other type of carbon, with a protective film thereon. In certain example embodiments, the protective film may be of or include a layer of or including SnOx prior to HT. Optionally, a release layer of a material such as zinc oxide may be provided between the SnOx and the DLC. Following and/or during heat treatment the SnOx transforms into SnOy (y>x) so that stress is created due to the SnOx to SnOy transition. Then, during quenching, stress relief may occur which causes the layer to buckle, creating cracks which may act as liquid channels that permit the sacrificial film to be easily removed via washing or the like.