ingot700x150a

The following table shows some hints to solve most common problems when applying boron nitride coatings:

.

Problem

Cause

Solution

Coating peels.

Coating is too thick.

Dilute coating so that the layer thickness does not exceed 100µm.

Coating does not adhere on the surface.

Bad surface conditions.

Clean and degrease surface, perhaps grit blasting, warm surface prior to application to 100-150°C.

Further layers do not stick on the first layer.

First coating is not yet completely dried.

Extend drying time, remove loose particles and coat again.

Exfoliation and cracking.

Coating is too thick.

Dilute coating in such way that thinner layers can be applied.

Cloudy, uneven application when spraying.

Coating is not stirred up, spray gun is led jerkily not homogenious.

Stirr coating or use mixer. Pull even courses with spray gun.

 


© 2015 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst


These recommendations are believed to be correct. However, no guarantee of their accuracy is given. Therefore, purchasers shall make their own tests to determine suitability for their use. These products are offered for industrial and related uses (e.g. research and development) only. However the user must take the necessary precautions appropriate for products containing chemicals. This description does not imply the absence of any patents, the responsibility whatsoever solely rests with the user.

Application procedures - error table

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