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PEEK surface during precision laser cleaning process removing contamination layer
Alessandro Moretti
Alessandro MorettiPh.D.Italy
Laser-Based Additive Manufacturing
Published
Jan 6, 2026

PEEK Laser Cleaning

The secret to PEEK's success is its remarkable resistance to intense heat and aggressive chemicals, all without losing its structural integrity, making it perfect for rigorous industrial applications where ordinary plastics would quickly fail.

Laser-Material Interaction

How laser energy interacts with this material during cleaning

Thermal Destruction

616
K
0
616
1,232

Laser Absorption

0.25
0
0.25
0.5

Laser Damage Threshold

1.2
J/cm²
0
1.2
2.4

Ablation Threshold

0.58
J/cm²
0
0.58
1.16

Thermal Diffusivity

1.5e-7
m²/s
0
1.5e-7
2.9e-7

Thermal Expansion

4.7e-5
10^{-6} K^{-1}
0
4.7e-5
9.4e-5

Specific Heat

1,170
J/(kg·K)
0
1,170
2,340

Thermal Conductivity

0.25
W/m·K
0
0.25
0.5

Laser Reflectivity

0.06
%
0
0.06
0.12

Material Characteristics

Physical and mechanical properties defining this material

Density

1.32
g/cm³
0
1.32
2.64

Surface Roughness

0.6
μm
0
0.6
1.2

Tensile Strength

100
MPa
0
100
200

Youngs Modulus

3.6
GPa
0
3.6
7.2

Hardness

0.11
GPa
0
0.11
0.22

Flexural Strength

170
MPa
0
170
340

Oxidation Resistance

5
μm/year
0
5
10

Corrosion Resistance

0.95
mm/year
0
0.95
1.9

Compressive Strength

100
MPa
0
100
200

Fracture Toughness

8
MPa m^{1/2}
0
8
16

Electrical Resistivity

1e16
Ω·m
0
1e16
2e16

PEEK 500-1000x surface magnification

Microscopic surface analysis and contamination details

Before Treatment

When examining the contaminated PEEK surface at 1000x, you spot thick layers of debris clinging everywhere. Dark spots and irregular bumps cover the entire view, blocking any smooth areas. This mess creates a rough, uneven texture that hides the material's natural form.

After Treatment

After laser treatment, you see the PEEK surface restored to a clear, uniform shine at 1000x. Smooth planes and fine details emerge without any clinging residues. The treatment wipes away all traces, revealing a clean

Regulatory Standards

Safety and compliance standards applicable to laser cleaning of this material

FAQ

Common Questions and Answers
How do I safely start laser cleaning PEEK parts without causing damage?
You must begin by selecting a low-power laser setting to match PEEK's heat resistance, ensuring the beam gently removes contaminants without overheating the surface. Make sure you scan the area slowly and evenly, allowing the material's strong structure to handle the process without warping or weakening. This approach brings back the smooth finish effectively, keeping the part's durable properties intact for continued use.
What happens if PEEK surfaces discolor during laser cleaning?
Start with checking your laser intensity right away, as PEEK's low absorption can lead to uneven heating if the power is too high. You should adjust the pulse duration to shorter bursts, which helps dissipate heat quickly through its moderate conductivity and prevents any color changes. Keep monitoring the surface closely, and this will restore the original appearance without compromising the material's toughness.
Can laser cleaning affect PEEK's strength after multiple sessions?
You must test a small area

See our work

PEEK Dataset

Download PEEK properties, specifications, and parameters in machine-readable formats
32
Variables
0
Laser Parameters
0
Material Methods
11
Properties
3
Standards
3
Formats

License: Creative Commons BY 4.0 • Free to use with attribution •Review CC BY 4.0 license terms

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