10 DLC Coating Manufacturers in 2023
This section provides an overview for dlc coatings as well as their applications and principles. Also, please take a look at the list of 10 dlc coating manufacturers and their company rankings.
Table of Contents
What Is a DLC Coating?
A DLC coating is a surface treatment technology with excellent features such as high hardness, wear resistance, low friction, and resistance to adhesion.
DLC stands for Diamond-like Carbon.
Uses of DLC Coating
DLC coating is mainly used to improve wear resistance of metals. It is expected to prevent seizure and improve durability. The main applications of DLC coating are as follows:
- Coating of automobile engines to improve durability
- anti-wear coating for cutting tools
- Coating for improving durability of industrial robots
- Coating for shafts and bearings of processing machines
Principle of DLC Coating
DLC is synthesized from diamond and carbon components. It is synthesized by injecting acetylene gas and generating plasma with high frequency and high voltage to break it down into carbon and hydrogen, with the hydrogen being discharged. The positively ionized carbon adheres to the negatively charged product and non-crystals similar to diamond are formed on the surface of the product.
DLC coating reduces the coefficient of friction for many materials, thus contributing to the reduction of CO2 emissions.
Other Information on DLC Coating
1. Deposition Method of DLC Coating
The characteristics of DLC coating vary depending on the deposition method. There are three major types of deposition methods.
CVD Method
The deposition speed is faster than PVD and can be used for complex shapes. Thick films can also be deposited with hydrogen.
PVD method
Hydrogen-free deposition and high-hardness deposition are possible. It has strong adhesion to the base material and can be used for conductive materials, but thicker films are difficult to achieve.
Plasma ion implantation method
Room temperature deposition is possible and can be applied to rubber, resin, and ceramics.
2. Demerits of DLC Coating
DLC coating has some drawbacks to go with its benefits:
- Easily chipped and fragments can be mixed in
- poor adhesion to fabric
- limited to coatings of up to 2 microns
- hardness decreases as the amount of hydrogen content increases
3. DLC Coating on Aluminum
DLC coating on aluminum can provide wear resistance and low friction. This feature makes it possible to reduce the weight of machine parts, etc. Since aluminum alloys are susceptible to oxidation and contain many different elements, it is necessary to select an intermediate layer that matches the boundary surface between the DLC thin film and the base material. An example of application of DLC coatings to aluminum alloys is coating of engine parts, but low adhesion resulting from the low affinity between carbon and aluminum has been cited as an issue.
4 DLC Coating and Molybdenum-Based High Lubricity Lubricants
Cases of wear of DLC coatings has been reported when sliding with oils containing molybdenum dialkyl dithiocarbamate, a friction modifier. Although the DLC coatings exhibits low friction in a dry environment, it is unlikely to achieve extremely low friction when used as it is as a boundary lubricant. When molybdenum disulfide bonding curtain is used, it is dry and low-friction, but when used as a boundary lubricant, it does not have much durability against friction due to its low wear resistance.
5. Peeling of DLC Coating
Although DLC coating can be processed on aluminum and brass, the DLC coating may peel off under high load environments. To avoid peeling, the substrate must have high hardness. This method allows the deposited ions to penetrate the substrate surface and achieve high adhesion with the deposited film.
List of 10 DLC Coating Manufacturers
*Including some distributors, etc.
Sort by Features
- Default
- Company Size: largest first
- Year Founded: oldest first
- Year Founded: earliest first
Sort by Area
- United States of America
- China
- Switzerland
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Calico Coatings
DLC Coatings
-
-
-
-
-
Richter Precision Inc.
DIAMOND-LIKE CARBON (DLC) PVD COATINGS
-
-
DLC Coating Manufacturer Ranking
*Including some distributors, etc.Number of Employees
Newly Established Company
- Shenzhen DEK Manufacturing Co., Ltd.: 2002 (21 years ago)
- EMF: 1936 (87 years ago)
Company with a History
- EMF: 1936 (87 years ago)
- Shenzhen DEK Manufacturing Co., Ltd.: 2002 (21 years ago)
Related Products
Search from All Categories
This is the version of our website addressed to speakers of English in the United States. If you are a resident of another country, please select the appropriate version of Metoree for your country in the drop-down menu.