Patent ID: 6217952
Filing Date: 2001-04-17
Classification: C23C

Abstract:
A method of forming films over an inner surface of a cylindrical member having a bore, said method comprising:an intermediate film forming process comprising steps of:placing the cylindrical member in a vacuum vessel,inserting an electrode of an intermediate film forming material for enhancing adhesion of a hard carbon film in the bore of the cylindrical member, and keeping the cylindrical member at a ground potential or floating potential,supplying a sputtering gas into the vacuum vessel after evacuating the vacuum vessel, andapplying a voltage to the electrode to produce a plasma around the electrode in the bore of the cylindrical member in order that the intermediate film forming material is sputtered from the electrode and is deposited so as to form an intermediate film over the inner surface of the cylindrical member; anda hard carbon film forming process comprising steps of:keeping the electrode at a ground potential,supplying a gas containing carbon into the vacuum vessel after evacuating the same, andapplying a voltage to the cylindrical member to produce a plasma in the vacuum vessel in order that a hard carbon film is deposited by plasma CVD process on the intermediate film formed over the inner surface of the cylindrical member,wherein the intermediate layer forming process and the hard carbon film forming process are performed sequentially by using the same vacuum vessel.