Haygor Advanced Coating Service
DLCDiamond-Like Carbon
Reduce friction, galling and adhesive wear in sliding or rolling contact.
Haygor’s application-first review begins with the failure mode, the operating environment and the part—not a coating acronym alone.
Coating overview
A carbon-based surface for friction-driven failure modes.
DLC describes a family of diamond-like carbon coatings engineered to provide low friction and strong resistance to adhesive wear, abrasion and scuffing. Properties vary substantially among hydrogenated, hydrogen-free, doped and multilayer architectures, so the acronym alone is not a complete specification.
For Haygor applications, DLC may be considered for sliding or rolling components, valve and pump hardware, precision mechanisms, molds and parts that operate with limited lubrication. Final selection depends on contact pressure, speed, temperature, lubricant, substrate support, counterface material and surface finish.
Problems it helps solve
Start with what the surface is doing wrong.
DLC becomes relevant only when its strengths align with the observed failure, the component and the operating conditions.
Scuffing and cold welding
High contact pressure can seize compatible metal surfaces and rapidly damage both parts.
Galling and material transfer
Sliding contact can smear material, increase drag and disrupt dimensional control.
Fretting and micro-motion wear
Small repeated movements can generate debris, oxidation and surface fatigue.
Lubrication loss
Startup, washout or dry-running periods can remove the protective fluid film.
Why use an advanced coating
Engineer the working surface—not just the bulk material.
DLC is a more targeted approach than a conventional hard coating when the failure is driven primarily by friction, adhesive interaction or insufficient lubrication.
Low-friction surface
Can reduce drag and heat generation in qualified sliding or rolling interfaces.
Anti-galling behavior
Helps limit adhesive wear, material transfer and scuffing between compatible mating surfaces.
Performance with limited lubrication
Certain DLC architectures support boundary, emergency or dry-running conditions after review.
Smooth precision finish
Thin carbon-based layers can protect close-tolerance components when surface preparation is controlled.
Industries & common uses
Where DLC is commonly evaluated.
These are application starting points—not blanket approvals. Substrate, geometry, process conditions and qualification requirements still control the final recommendation.
Valve stems & trim
Sliding and actuating surfaces where friction, galling and limited lubrication affect reliability.
Pins, shafts & followers
Loaded moving components exposed to adhesive wear, startup contact or oscillation.
Gears & rolling contacts
Qualified teeth, races and rolling interfaces requiring a tribological surface review.
Pump components
Selected rotors, sleeves, plungers and internal parts where friction and wear interact.
Molds & forming tools
Surfaces where release, sticking and material transfer are production problems.
Precision mechanisms
Instrument and machine components that must move smoothly with minimal dimensional build-up.
Selection guidance
Know when DLC is a strong candidate—and when to pause.
The right coating discussion helps narrow the options without presenting any coating as a universal answer.
Strong-fit signals
- Friction or galling is the dominant failure
- Lubrication is limited, inconsistent or temporarily absent
- Sliding or rolling contact is well defined
- The counterface and surface finish can be controlled
Review carefully when…
- High service temperature exceeds the selected DLC architecture
- Impact or edge loading dominates the contact
- The substrate is rough, soft or poorly supported
- DLC is being treated as a universal corrosion barrier
Haygor application review
Four inputs move the discussion forward.
Define the failure
Describe wear, friction, corrosion, heat, sticking, galling, erosion, buildup or dimensional loss.
Document the service
Provide media, temperature, pressure, motion, load, lubrication and cleaning conditions.
Identify the component
Share the material, heat treatment, finish, geometry, drawing and critical dimensions.
Confirm qualification
Align on masking, coverage, inspection, testing, documentation, quantity and schedule.
Technical questions
Important limits to address before quoting.
Final properties and process limits must be tied to Haygor’s approved coating recipe and the exact customer component.
Will DLC change the part dimensions?
Advanced coatings may be thin, but even a small layer matters on tight fits, threads, bores, sealing surfaces and sharp edges. Critical dimensions should be identified for masking, tolerance review or post-coating finishing.
Can every internal bore, recess or thread be coated?
Vacuum and deposition processes are strongly influenced by the selected process, line of sight, fixturing and geometry. Deep bores, hidden features and shadowed surfaces may receive limited coverage. Haygor should review the drawing before coverage is promised.
Is DLC guaranteed to extend service life?
No coating should be presented as a universal service-life guarantee. Improvement depends on whether the coating is matched to the substrate, dominant failure mode, operating environment, preparation, thickness, finish and inspection criteria.
Talk with Haygor
Bring the component—and the performance problem.
Send the material, drawing, operating conditions and current failure mode. Haygor can determine whether DLC is a credible candidate or whether another surface strategy should be evaluated.