In Reply to: Re: How To Control The Parameters In Al Vacuum Evaporation posted by Donald Mattox on 04/29/02 at 11:10 AM:
Thank you very much for your reply.
1. Actually we had tried to heat the filaments without the aluminium at the constant ratios of 10%, 20%, 30% and 40%. The consequence is below:
-The total evaporating current dropped down from maximum value to 2/3 max value during 20s to 7s (in different ratio). this showed the resistance going up as heating (vol was stable).
-Some filaments blacken and the rest not.
2. We will consider to improve the clamping jigs and try again in different parameters.
If you have further suggests, pls advise.