Metalliferous carbon coating composition similar with diamond

A diamond and carbon coating technology, applied in the direction of metal material coating process, coating, layered products, etc.

Inactive Publication Date: 2008-04-02
UNITED TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are many issues with scaling up this RF technology to industrially relevant sizes and geometries

Method used

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  • Metalliferous carbon coating composition similar with diamond
  • Metalliferous carbon coating composition similar with diamond

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Embodiment Construction

[0022] Metal-diamond-like carbon coatings were deposited by magnetron sputtering, in which four targets including metals of interest were installed inside the deposition chamber, activated and treated with argon (Ar) and acetylene (C 2 h 2 ) gas for sputtering. A deposition substrate comprising a rolling contact fatigue rod, or a substrate 10 comprising a hardened iron-based alloy such as AISI M50, is placed within the deposition chamber and negatively biased with a direct current (DC) potential in the range of about -50 to -750 DC volts . The sputter target composition includes the elements titanium (Ti), niobium (Nb) and tungsten (W).

[0023] Metal hydrocarbons (Me- DLC) coating. Before starting the deposition process, the residual pressure in the vacuum chamber was set to be less than about 10 -3 Pascal (Pa). During the deposition process, the total gas pressure in the vacuum chamber is between about 0.3Pa and 0.6Pa. The substrates referred to herein are supported w...

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PUM

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Abstract

A basal body comprises a metal diamond-like carbon coat. The metal diamond-like carbon coat comprises a first layer and a second layer with the thickness of 0.5 micron to 10 micron which is stored on the first layer. The first layer comprises a transition metal, a first surface and a second surface which is touched with the basal body. The second layer comprises carbon, transition metal chosen form wolfram, niobium, titanium and the combination group, a first surface and a second surface which is contacted with the first surface of the first layer. The metal diamond-like carbon coat combination is provided with the negative voltage bias potential range of 50 volt to 750 volt, within which the wearing rate is less than 10*10-15 m3m-1N-1.

Description

[0001] Cross References to Related Applications [0002] not applicable. [0003] Federally Funded Research [0004] The US Government has a paid license to this invention and has limited authority to require the patent owner to license others under DAAH 10-98-2-0004 awarded by the US Military as appropriate. technical field [0005] The present invention relates to metallic diamond-like carbon coating compositions, and more particularly, to metallic diamond-like carbons comprising an intermediate layer of a transition metal such as chromium or a transition metal carbide and an outer layer of carbon and a transition metal such as titanium, tungsten or niobium Carbon coating composition and method of making same. Background technique [0006] It has been known for many years that diamond-like carbon (DLC) films are harder and have a lower coefficient of friction (μ) especially for steel. These lower values ​​of μ (˜0.2) are disclosed for amorphous hydrogenated (abbreviated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B33/00B32B9/00C23C14/06C23C14/35
Inventor C·V·库珀B·D·汉森K·贝维洛瓜
Owner UNITED TECH CORP
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