IP Library Patent Application 11039571
Patent Application
App. No. 11/039,571

Method of making wear-resistant components

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Quick Facts
Patent No.
US None
App. No.
11/039,571
Abstract

A process for cleaning and coating CVT bands includes a precleaning step, an argon sputtering step, a bond layer deposition step, and a final layer deposition.

Claims (18)

1 . A method of making a wear-resistant continuously variable transmission belt comprising the steps of:

(1) precleaning said belt;

(2) installing said belt in a chamber and producing a vacuum in said chamber;

(3) sputtering a surface of said belt with argon;

(4) depositing a first layer on said belt;

(5) depositing a diamond-like carbon layer on said belt; and

(6) removal of said belt from said vacuum chamber.

2 . A method of making a wear-resistant continuously variable transmission belt comprising the steps of:

(1) precleaning said belt in a degreasing solution and in an industrial cleaner solution at 55° C.;

(2) rinsing said continuously variable transmission belt after each cleaning step;

(3) cleaning said belt with copious amounts of methanol;

(4) placing said belt in a vacuum chamber and reducing the pressure therein to a predetermined value;

(5) introducing argon into said chamber at a predetermined pressure;

(6) pulsing said chamber and said belt with a bias voltage having a predetermined voltage level cycle and cycle time;

(7) introducing silane gas into said vacuum chamber and cleaning off said argon gas while said bias voltage remains constant;

(8) introducing acetylene gas into said chamber and reducing or withdrawing said silane gas while said bias voltage remains constant;

(9) maintaining said acetylene gas until a diamond-like carbon hydrogen coating is deposited on said bands to a thickness in the range of 1-3 μm;

(10) removing said bias voltage and removing said belt from said vacuum chamber.

Assignments (4)
SECURITY AGREEMENT Recorded Apr 16, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: CITICORP USA, INC. AS AGENT FOR BANK PRIORITY SECURED PARTIES; CITICORP USA, INC. AS AGENT FOR HEDGE PRIORITY SECURED PARTIES
Reel/Frame 022553/0446 →
SECURITY AGREEMENT Recorded Feb 4, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: UNITED STATES DEPARTMENT OF THE TREASURY
Reel/Frame 022201/0610 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 14, 2009
From: GENERAL MOTORS CORPORATION
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 022117/0022 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 7, 2005
From: WANG, YUCONG; WEI, RONGHUA
To: GENERAL MOTORS CORPORATION
Reel/Frame 016024/0266 →