this wax protective layer only can work for 1hour at 60 degree, i think.

--- On Mon, 7/7/08, 汪飞  wrote:

From: 汪飞 
Subject: Re: [mems-talk] Black wax
To: "General MEMS discussion" 
Date: Monday, July 7, 2008, 11:50 PM

What do you mean about "that this protective film only takes about an
hours in KOH 40% at 60ºC"?

2008/7/4, Anahí Weinstock :
> Hi
> I´m using black wax as wet etching protector. In bibliografy it is
> dissolved in toluene and cured at 100 ºC in oven for 1 hs, then after
> being deposited on the wafer. The problem is that this protective film
> only takes about an hours in KOH 40% at 60ºC.
> Someone has experience what are the optimal conditions for working with
> this material?
> Thanks
> Anahí

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