You may use almost any crucible. Vitreous carbon will meet the requirements. The bad news is that the soft metals will heavily contaminate the chamber... Best...
angel
angel@...
Jun 1, 2006 5:17 pm
3153
I think that the issue of contamination of vacuum chambers by the "soft metals" is a worthy topic for this PVD Forum to discuss. I have heard the "lore" since...
CALL FOR PAPERS Invites Research and Review Articles NanoTrends attract scholarly contributions that fall under the broad tag of nanoscale science and...
IF evaporation of these materials is not possible, can they be sputtered? please clarify. Dave Baldwin <dbaldwin@...> wrote: I think that the issue of...
Dhayal, It is easy to evaporate or sputter these metals. Check with your equipment supplier or materials vendor for typical evaporation parameters and...
I think this is a classic case of all things are relative. If the aim is to deposit an ultra pure material very slowly then there is a potential problem of...
Charles A Bishop
cabishopconsulting@...
Jun 3, 2006 2:23 pm
3158
Hi, Has anyone deposited CaCl2, CaO or another compound of Ca (not CaF) by e-beam or PVD? Is it difficult to deposit these compounds? Are there any special...
Great points, Charles, about relative arrival rates. I agree. If you deposit at high deposition rate and keep everything cold, contamination by the "soft...
I think that the bigger concern is putting Sn, Cd and Pb -containing materials in the vacuum system as part of the fixturing. Brass which is easily machined...
SVC
donmattox@...
Jun 6, 2006 11:31 am
3161
Hello all, i have the problem with evaporation of aluminium from tungsten filament on the surface of deep plastic substrate. (deep of 7 cm, width 5 cm length...
Dear Jaromir, Can you use boat for Al evaporation. Probably it will help because of evaporation only in the substrate direction - thus you will increaase the...
Dear colleagues, I saw, that this debate continue and decide to join in it. Regarding the Sn - everybody can deposit (by evaporation or sputtering) Sn thin...
Yes, Don, what you raise is a concern. However, some of us are starting to explicitly deposit, for ex., Sn and Zn oxides and variants which make, for ex.,...
Jaromir: Your base vacuum of 10(-5) is not sufficient for adding Argon to scatter Al atoms sufficiently to reach the end of the tube. You should reach 10(-6)...
Masud Naraghi
masud.naraghi@...
Jun 6, 2006 10:58 pm
3166
Good point about brass. I once transformed some 8-32 brass screws into 6-32 screws when they were heated up in the water-cooled shielding for a large electron...
I am interested to follow this on-line course. Does anyone have experience with it? response, course-material, etc.? Thanks in advance, David ... From:...
David Schijve / A. de...
davidschijve@...
Jun 7, 2006 2:18 pm
3169
hello Milko, unfortunately the machine is vertical one, so using the boats is very difficult, i think nearly impossible:o( ... of evaporation only in the...
Dave, in my early years (25+yrs ago) I do recall reading a vacuum textbook that gave a list of materials that should or shouldn't be used in vacuum systems....
Charles A Bishop
cabishopconsulting@...
Jun 7, 2006 2:19 pm
3171
Dear all, One of our member companies wants to reduce the fouling of their moulds when moulding epoxy. They have a lot of sticking of the epoxy and cleaning...
There's a whole industry selling "Mold releases" just for this purpose. A quick "Google" will locate most of them. It will also help if your process can...
Did they try a mould rtelease agent, such as a Silicone based one. \Hans....
Hans Luedi
hluedi@...
Jun 8, 2006 7:29 pm
3174
Dear Wendi, I deposited Eu doped CaO films by e-beam evaporation. (ref. Jpn. J. Appl. Phys., vol.29, p.305 (1990)) Pressed powder of CaO was used as an...
Yoshio Abe
abeys@...
Jun 8, 2006 7:30 pm
3175
Jaromir: We have several customers in the world doing exactly this type of evaporation process, including several levels of substrate complexity...The vacuum...
I have tried to change all the process parameters, distance between evaporator and substrate, amount of Auminium....and the best , amazing result i achieved...
See US Patent # 4,948,529 and # 4,710,441 Regards, Paul Diffendaffer ... From: PVD_coatings@yahoogroups.com [mailto:PVD_coatings@yahoogroups.com]On Behalf Of...
Dear Kris You may try glasslike non-stick Al2O3 and Cr2O3 coatings prepared by our technology "Cold High Voltage Sputtering". We utilize them for plastic...
Dina
thinfilm@...
Jun 8, 2006 7:38 pm
3179
Quartz lamps are standard items [Non-text portions of this message have been removed]...
Dear Jaromir, As I understood, you found the perfect solution of the problem alone. There are a lot of plastics (for example polyamide), which need heating...
Hi Jaromir. For good thin film adhesion you're almost certainly going to need to heat the substrate up a little bit. If a glow discharge is insufficient you...
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