The DIAMANT penetration depth function test
Maximum performance for your coating sealing system

Thermal spraying

Does your sealer have proof of function?

To achieve long-term protection of your thermal sprayed coating, it is important that the sealer penetrates deeply into the TS layer. Sealers that only adhere to the surface or penetrate minimally will be removed along with the TS layer during finishing or after a few hours of operation. The remaining layer is unprotected and thus susceptible to e.g. corrosion damage.

In cooperation with the Institute of Surface Technology (IOT) at RWTH Aachen University, we have succeeded in developing a fast and cost-effective detection method for the penetration behavior of sealers into thermally sprayed coatings. We use this method to ensure that our sealers really work in interaction with your TS layer and the respective process parameters and deliver lasting performance.

We check the function of your sealer!

With the new DIAMANT penetration depth function test based on permeability measurements it is possible to get a clear statement about the penetration depth of the sealer. This helps us to develop a sealer that perfectly matches your specific coating, penetrates the complete TS layer and guarantees maximum performance!

Subsequently, a joint detailed analysis of your specific layer sealer system will be performed with our managing director and test developer Dipl.-Ing. Carsten Kunde.

Feel free to contact us and maximize the performance of your layer sealer system!

Your contact

Mr. Carsten Kunde

Tel: +49 (0) 2166 – 98360
Fax: +49 (0) 2166 – 83025

Only a layer completely sealed up to the carrier body is permanently protected against corrosion!

For the test, we use special carrier bodies made of sintered metal. These carriers are coated by you with your spray parameters and thus represent a 100% suitable, practical laboratory sample of your TS coating. We measure the coated specimens and apply the sealer in our laboratory. The specimens are then ground step by step and the permeability of the carrier bodies is determined. The penetration depth of the sealer correlates with the measured permeability and can thus be clearly determined for each sample.

What are the benefits of the penetration depth function test?

Clear statement on the functional penetration of your winner
Avoidance of loss of function, e.g. due to corrosion
Quality increase
Economic and ecological action
Recognition of potential for improvement
Reduction of production times
Life extension
Saving of follow-up costs

Example 1

Sealer	#1	#2	#3
⌀ Layer thickness	1060 µm	1120 µm	960 µm
⌀ Grinding operations	28	24	29
⌀ Penetration depth	594 µm	672 µm	730 µm
	56 %	60 %	76 %

INITIAL SITUATION:
HVOF – WC coating with 200 µm layer thickness
Existing sealant 4h curing at RT, solvent-based sealant

DIAMANT solution:
Solvent-free sealant, 2h curing at RT without heating

RESULT:
– Increased penetration depth
– Time saving
– Environmentally friendly, as without VOC

Example 2

Sealer	#1	#2	#3
⌀ Layer thickness	186 µm	162 µm	179 µm
⌀ Grinding operations	18	26	21
⌀ Penetration depth	52 µm	120 µm	75 µm
	28 %	74 %	42 %

INITIAL SITUATION:
APS – Al203 coating with 1.000 µm layer thickness
Existing sealant 1h curing at RT + 1h at 150°C

DIAMANT solution:
Application at 30 – 50°C, curing 4h RT

RESULT:
– Increased penetration depth
– Cost and time savings due to curing without heat treatment

Discover our dichtol product range

The DIAMANT penetration depth function testMaximum performance for your coating sealing system