A transparent thin coating or film to be applied on cross linked polystyrene blocks that will be in contact with an aqueous couple gel to improve scratch resistance and surface hardness with the following parameters.
Desired Timeframe : Within 3 months
Field Of Use and Intended Application
Desired Outcome
The coating is required to reduce the wear out of the sound transducer block, improve the quality of the product and it's life cycle and reduce maintenance costs.
Previously Attempted Solutions
We have tried with 3 different nanocoatings that have not satisfied our needs. The problem is that it is difficult to harden the surface of our soft polymer coating it with a nano film and so we need to increase the coating's thickness. We try also with amorphous DLC (1.5 micron thick) and it increases the surface hardness more 60% and so it is a quite good result for us. The problem with amorphous DLC is that it have a high acoustic impedance (because of coating is metallic) and so we had waste it.
Some parameters that can be related to applications:
a) Sound Frequency Band: 1 / 5 MHz
b) Exercise Voltage: 80 V
d) Impulse width: 100.00 ns
(Source Courtsey : Prof D.J.Desai, LD Engg. College)
{{comment.DateTimeStampDisplay}}
{{comment.Comments}}