Why the diamond-like-carbon coating works well with water?

Click For Summary
SUMMARY

The discussion centers on the exceptional frictional properties and wear resistance of Diamond-like Carbon (DLC) coatings, specifically a-C and ta-C types, when used with water lubrication. Participants highlight that the absence of hydrogen in these coatings contributes to their performance, allowing water to act as an effective lubricant. The benefits of using water include the formation of a sacrificial layer that protects the DLC surface and the cooling effect of water, which prevents overheating during high contact pressures. This makes DLC coatings a viable option for eco-friendly engineering applications.

PREREQUISITES
  • Understanding of Diamond-like Carbon (DLC) coatings
  • Knowledge of tribology and lubrication principles
  • Familiarity with eco-friendly engineering concepts
  • Basic chemistry related to surface interactions
NEXT STEPS
  • Research the properties and applications of a-C and ta-C DLC coatings
  • Explore tribological studies on water lubrication in engineering
  • Investigate the cooling effects of water on frictional surfaces
  • Examine the role of sacrificial layers in lubrication systems
USEFUL FOR

Engineers, researchers in eco-friendly technologies, and tribologists interested in advanced lubrication methods and the performance of DLC coatings in various applications.

Nahahahah
Messages
8
Reaction score
0
Hi everyone.
I have a question with a DLC (Diamond-like-carbon) coating.

In many papers, the DLC coating without hydrogen (a-C or ta-C) shows very good frictional properties and wear resistance with water lubrication.

I'm studying on eco-friendly engineering, so I surprised that water can be used as lubricant in engineering devices with this coating.

But why the DLC coating shows that good friction and wear properties with water lubrication??

Is it by chemical reaction? or just it does not make rust with water? (then, why not stainless steel??)

I'm searching the papers to know the reason, but it is not easy...

Please help me!
 
Engineering news on Phys.org
I think using water as a lubricant has a couple of benefits. It provides a replaceable sacrificial layer that can wet and protect the DLC surface by binding with any free surface bonds. Diamond is sensitive to heat, the water cools the surface and so prevents burning that might happen with a surface exposed to air and high contact pressures.
https://en.wikipedia.org/wiki/Diamond-like_carbon#Tribology
 

Similar threads

Synhelion -- Using solar heliostat farms to create liquid fuels from Water Vapor and CO2
  • · Replies 7 ·
Replies
7
Views
3K
Chemically regenerating my auto's catalytic converter?
  • · Replies 19 ·
Replies
19
Views
9K
Cooking (Thermodynamics) Problems
  • · Replies 14 ·
Replies
14
Views
4K
How Can I Design a Solvent Recovery Column for MIBK and Acrylic Acid Separation?
  • · Replies 3 ·
Replies
3
Views
7K
Why water cracks hot exhaust manifold
  • · Replies 15 ·
Replies
15
Views
14K
Reactor Channel Layout: RBMK, PWR, CANDU Comparison
  • · Replies 1 ·
Replies
1
Views
5K
Could New Materials Propel China's Industry to Bill Gates-Level Success?
  • · Replies 4 ·
Replies
4
Views
10K
Thoughts on Excerpt from My Chem Prof's Textbook?
  • · Replies 8 ·
Replies
8
Views
4K
Struggling with Chemistry Lab Equations?
  • · Replies 1 ·
Replies
1
Views
4K
Surface roughness in 2D sinusoidal corrugation
  • · Replies 1 ·
Replies
1
Views
5K