Group No.8 DLC Coating (Diamond-Like-Carbon)
① DLC (Diamond-like carbon) coating
■What is DLC Coating?
A DLC coating is a treatment to apply an amorphous hard carbon film that has intermediate physical properties between diamond and graphite to the surfaces of various kinds base materials. The DLC coating film has the following features: high hardness, surface smoothness, affinity, and infrared ray transmissivity. We adopt chemical vapor deposition (CVD) to create the coating film with a low frictional property.
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■DLC Coating 's characteristics
■DLC Coating's technical data
| Item | Detail | Photograph |
|---|---|---|
| Coating method | CVD method |
Appearance of DLC 
Sectional view of DLC 
Appearance of DLC 
AFM(area 20μm) |
| Hardness | About 2200HK | |
| Surface roughness※1 | Ra：About 0.02μm | |
| Frictional coefficient | 0.1～0.2 | |
| Film thickness | About 6μm (DLC layer about 3μm) | |
| Color tone | Grey～Blac | |
| Cure temperature | 150～200℃ | |
| Characteristics |
Our DLC coating film has excellent smoothness and a low frictional property. The film is highly durable and protects slide members from abrasion caused by sliding. The DLC film exhibits stable sliding properties not only dry conditions but also wet conditions in which oil or water exists. In addition to standard metal parts, the DLC film has been used for metal parts made of a thin plate and silicon rubber parts. |
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※1 Ra (surface roughness) described in the table refers a measured value after applying CDV coating to a base material with surface roughness of 0.02 μm. (The roughness did not change before and after the coating.)
＊Full function ：TOYO DRILUBE CO.,LTD (JAPAN)
＊The data shown above are for your reference only. The numerical values described on this page are not guaranteed.
② Infrared ray transmission film
■What is an infrared ray transmission film?
An infrared-ray transmission film is a coating film to increase infrared ray transmissivity. By applying the film to the surfaces of a part, the transmissivity of the part is improved.
■Main features
In addition to giving the excellent transmissivity, this film improves wear resistance of a part to be coated.
Appearance of infrared ray transmission film
Infrared ray transmittance of DLC
