Conference : Public : tetetswtsetse http://www.svc.org/forums/ Hello, I would suggest that if you are making the coating in a coating machine of average vacuum levels that the following practices may help you. Heat the glass to around 100 C to drive off water, methane and other stuff adsorbed onto the surface. If you are doing this in a bell jar, use a shutter to cover the substrate. Start your Al evaporator (a filament, I am guessing) and as the rate becomes large, quickly open the shutter, so that only high rate of arrival of Al is allowed. Al is a getter pump as well as a coating. The slower you shoot in average vacuums, the more oxides you form in your coating. Usually fast is best. Good Luck http://feedproxy.google.com/~r/SocietyOfVacuumCoatersForumConferencePublic/~3/lR9xEXslzxk/messages.cfm 2009-10-30T17:56:37-05:00 Physics of Thermal Evaporation http://www.svc.org/forums/messages.cfm?threadid=742F1FC4-9F2C-0556-7B8C227D4C9C0318&r=1 I would like some help understanding the parameters that determine the grain size of an thermally evaporated Al film deposited on a glass substrate. For example, how does the chamber pressure, deposition rate, source to substrate distance, source temperature, and substrate surface temperature affect the grain size? Which of these parameters are most dominant in determining the grain size? I need a very compact film with a small grain size. I was under the impression that at a fixed distance, a low temperature deposition at a slow rate would give the most compact film (smallest grains). Also, by decreasing the source to substrate distance you would be able to deposit at a lower temperature, thus decreasing the grains. However, my films look pretty bad right now, and I need to change some parameters and would appreciate some guidance. Any help would be great! Thank you. http://feedproxy.google.com/~r/SocietyOfVacuumCoatersForumConferencePublic/~3/A-3CMEvrPLM/messages.cfm 2009-10-20T19:01:35-05:00 Physics of Thermal Evaporation http://www.svc.org/forums/messages.cfm?threadid=742F1FC4-9F2C-0556-7B8C227D4C9C0318&r=2 Does anyone have experience with the bio-compatibility of vacuum metalized coated parts? http://feedproxy.google.com/~r/SocietyOfVacuumCoatersForumConferencePublic/~3/SPaNLryoRfg/messages.cfm 2009-10-20T08:37:00-05:00 Biocompatibility http://www.svc.org/forums/messages.cfm?threadid=71F364CA-9732-3CEC-528BC0C7D9EBABE4&r=3 we are looking for a second hand metallizer up 1600mm if there is any please contact or giving the details. http://feedproxy.google.com/~r/SocietyOfVacuumCoatersForumConferencePublic/~3/OyZBHsPUBuU/messages.cfm 2009-10-04T04:03:17-05:00 second hand metallizer http://www.svc.org/forums/messages.cfm?threadid=1E92F3FB-F0EE-10B1-0E1DA88FF005BD4E&r=4 I'm looking for a second hand DC PSU in the 100kW range for a Dc magnetron sputtering process by a HRC 7200 Al cathode : any idea where to search ? Thanks Pierre http://feedproxy.google.com/~r/SocietyOfVacuumCoatersForumConferencePublic/~3/yfPf5TCXIGY/messages.cfm 2009-10-01T19:52:00-05:00 second hand PSU http://www.svc.org/forums/messages.cfm?threadid=128471F4-DB9D-8422-631AF2A39FDEFD72&r=5 We seem to have to replace the ion source very often (every 4 wks). I was wondering if this is a normal life time or should I be looking at other factor in my process. http://feedproxy.google.com/~r/SocietyOfVacuumCoatersForumConferencePublic/~3/mlFfdKnV2eo/messages.cfm 2009-09-22T10:15:20-05:00 ion source use life http://www.svc.org/forums/messages.cfm?threadid=E21B4435-B47E-5C0A-BFB360AE48FF06F5&r=6 thank you for your reply Daryl and reducing the time the chamber is open seem to help with this issue. http://feedproxy.google.com/~r/SocietyOfVacuumCoatersForumConferencePublic/~3/YzsH1QdKVWM/messages.cfm 2009-09-22T10:13:34-05:00 problems with vacuum cycle http://www.svc.org/forums/messages.cfm?threadid=EB379B59-9B4F-E0E0-FA49BF4DDADEC57A&r=7 Rudy - increased pump down cycles can be cause by a few different issues. My first thoughts are moisture in the chamber from ambient conditions. In other words, what is the humidity like during the longer pump down cycles? Also another though pops into my mind - if the chamber is left open (not under vacuum) for any length of time, that can increase the pump down cycle as well. One last thought, during the "long" pump down cycle, has anything different been introduced into the chamber that could be outgassing? Of course not to be forgotten or ignored - a pesky leak that may occur on occasion when you open and/or close the chamber. Check the seal for nicks are particulates. Regards - Daryl http://feedproxy.google.com/~r/SocietyOfVacuumCoatersForumConferencePublic/~3/7sNMUte07r0/messages.cfm 2009-09-04T02:51:02-05:00 problems with vacuum cycle http://www.svc.org/forums/messages.cfm?threadid=EB379B59-9B4F-E0E0-FA49BF4DDADEC57A&r=8 I am looking for a company that has experience in coatings that increase reflectance of anodized spun reflectors or metalized plastic molded reflectors used for commercial or industrial lighting applications. http://feedproxy.google.com/~r/SocietyOfVacuumCoatersForumConferencePublic/~3/R6yM2Cd6x5s/messages.cfm 2009-09-01T11:01:00-05:00 seeking high reflectance coating http://www.svc.org/forums/messages.cfm?threadid=761FF332-C99B-110F-FEB773A0DD997D7D&r=9 I have problems with cycle of the vacuum inside the sputtering chamber sometimes it runs a typical 30 minute cycle but other days it take more than an hour to finish the vacuum cycle. what factors could be influencing this? http://feedproxy.google.com/~r/SocietyOfVacuumCoatersForumConferencePublic/~3/A8Xqu0C_RnU/messages.cfm 2009-08-05T11:40:00-05:00 problems with vacuum cycle http://www.svc.org/forums/messages.cfm?threadid=EB379B59-9B4F-E0E0-FA49BF4DDADEC57A&r=10 Hi everyone, I'm playing around with my new made vacuum system its thermal evaporation vacuum system. Now i will like to do some cold mirror reflector coating but don't know what material i have to use and how many layer do i use for visible light reflection from 400nm to 700nm wavelength. Dont have to be so perfect, I know its little bit tough doing this kind of coating with thermal evaporation but I heard there are some people doing with this kind of vacuum system. I hope anyone can guide me to the right direction. Thank you! Regards, Aaron email aydinnl2000@yahoo.com.sg http://feedproxy.google.com/~r/SocietyOfVacuumCoatersForumConferencePublic/~3/E8fkeitIi9Y/messages.cfm 2009-06-23T22:27:06-05:00 Cold Mirror Coating http://www.svc.org/forums/messages.cfm?threadid=10168146-D213-99A8-779939E35841E554&r=11 This is Kevin Jackson from CA. I am looking for the best options available regarding energy saving coatings. I got to know that Industrial Nanotech is doing wonders with its product Nansulate based on some Nano technology. I am not sure of it's effectiveness however before testing. Can you advise me for more substitutes of Nansulate which can help me for energy saving & reducing heat as well?? The coating will be applied on Refrigerated Steel Containers which are being used for storage of food items that shall help to reduce heat & also help in energy saving. Normal food including milk, juice, fruits, yogurt, eggs etc. is mainly stored in these containers PUF material is used for the steel containers as an insulation material which is inside it & of 58mm thickness & surrounded by exteriors of Steel -galvanized iron (GI) which is of thickness 0.6mm & on both sides(interior & exterior) of the PUF material. The inside and outside of the steel containers are already coated with Normal white paint The containers are exposed directly to the sun light but some areas are exposed to cloudy & rainy weather so we want 24X7 days protection for all seasons.The dimensions of the containers are 3m (L) x 2.6m (W) x 2.5m (H) approx. The power usage of one container is 60 units per day. We are looking for 10-15 units of saving per day. I want to apply the coatings for the energy saving to the exterior walls and roofs of the containers & i am looking for a complete energy saving coating working for all seasons & not just only reflecting the sunlight energy. Please advise for the best solutions available with which i should go further Awaiting your earliest response. Regards, Kevin Jackson http://feedproxy.google.com/~r/SocietyOfVacuumCoatersForumConferencePublic/~3/UxoSyduI_s4/messages.cfm 2009-06-18T02:30:34-05:00 For energy saving solutions http://www.svc.org/forums/messages.cfm?threadid=F20F42A1-B74A-1002-1265377CE6905FDD&r=12 Hi Ed, Kind of lonely trying to make a dense sputtered film. Please clarify your requirements. FIrst, are you trying to add some capability to an existing source/substrate set up or are you looking for a different source/substrate set up that will make a dense film. Since you already have in mind that you want more density, do you know how much density you currently have or what density are you attempting to achieve. In order of difficulty, you can decrease the open porosity, eliminate open porosity, decrease closed porosity, eliminate closed porosity - up to the point of some specification such as dielectric strength or optical transmission or moisture transmission. There is quite allot of literature in each of various fields which relate the density to some derived film performance criteria such as hardness, modulus, optical transparency or optical intensity damage threshold, dielectric strength, film resistivity, etc. But there has never been much published work which correlates more than a couple of those with film density. There is the further thorny issues around polycrystalline and amorphous or glassy as well which uncouple some of the extream attributes of film density. There are many different ways to increase film density. There are also many ways to characterize film density and density uniformity. It turns out that density and stress are related. Optical birefringence and stress are are also quite closely coupled. But it would be good to know what your requirements are viz. substrate size and shape, film type and film requirements from simple changes such as unbalancing the magnetron to diffuse to line of sight ion source treatment to full on duel power techniques which provide a separate plasma across the substrate via capacitive or other coupling methods. All of these have been made production worthy up to Gen V glass size, as an example. I'd be glad to provide another round of information if you have more clarity wrt your requirements and cost goals. Cheers, Erni red2erni http://feedproxy.google.com/~r/SocietyOfVacuumCoatersForumConferencePublic/~3/GNrNknwLQ4A/messages.cfm 2009-06-05T11:26:23-05:00 Sputter Film Densification http://www.svc.org/forums/messages.cfm?threadid=3A872028-E1FE-4191-9927130D66EE5F4A&r=13 We are in to the business of thermoforming of thermoplastic sheets like Polycarbonate,ABS and Acrylic. We need assistance on PVD of this articles mainly used for signage, safety glasses and POP. http://feedproxy.google.com/~r/SocietyOfVacuumCoatersForumConferencePublic/~3/Zi-Pwf3dAhc/messages.cfm 2009-06-05T06:42:19-05:00 PVD coating on 3D thermoformed parts http://www.svc.org/forums/messages.cfm?threadid=B003125C-AF8B-4888-B246591D274074F6&r=14 I am trying to find plasma assist sources to help densify sputtered thin films. I found that Jeol manufactures one but it is manufactured and supported in Japan only! Any help would be appreciated. Thanks, Ed http://feedproxy.google.com/~r/SocietyOfVacuumCoatersForumConferencePublic/~3/1m9QBzh10PI/messages.cfm 2009-05-13T11:11:22-05:00 Sputter Film Densification http://www.svc.org/forums/messages.cfm?threadid=3A872028-E1FE-4191-9927130D66EE5F4A&r=15 Do you see a trend for coating thickness or elemental analysis moving through the vacuum coating industry? http://feedproxy.google.com/~r/SocietyOfVacuumCoatersForumConferencePublic/~3/bF0LADna9IE/messages.cfm 2009-05-07T10:24:36-05:00 ?Coating Thickness Analysis? http://www.svc.org/forums/messages.cfm?threadid=1B762628-C461-16EE-E95E7B24E4EBEB4C&r=16 I have seen a trend of vacuum coaters to verify the thickness of various and multiple layers within their process. A reliable technique is using a non destructive XRF instrument similar to an X-Strata 980. If anyone would like some more information please contact me. [link]Karl.Mayle@oxinst.com[/link] or gather information at [link]oxford-instruments.com[/link] http://feedproxy.google.com/~r/SocietyOfVacuumCoatersForumConferencePublic/~3/dAHZrZPR-cU/messages.cfm 2009-05-07T10:22:05-05:00 Coating Thickness and Elemental Analysis http://www.svc.org/forums/messages.cfm?threadid=1B73D8FC-9763-2BFD-68A959F9F6DDFD5C&r=17 Hello, we have expereince in high adherence gold sputtering; realizing pilot plant or small production system and/or by custoimer deposition service. We are small and usually operate on small but high value projects. Please don't hesitate to contact me at luigi.marras@gmail.com thank you Luigi Marras Genefinity http://feedproxy.google.com/~r/SocietyOfVacuumCoatersForumConferencePublic/~3/eYwlxb2HFng/messages.cfm 2009-04-14T05:28:50-05:00 Small run gold sputtering http://www.svc.org/forums/messages.cfm?threadid=D773CAED-EDA9-4728-EFAD73D68096E0F8&r=18 I worked many years in the semicondutor industry supplying sputtering target. You are absolutely right that the uniformity etc are excellent for those applications. How do you coat the LiCo? What tools, settings, etc.? will.guo@6nmetals.com http://feedproxy.google.com/~r/SocietyOfVacuumCoatersForumConferencePublic/~3/hkJ-i1E40Z0/messages.cfm 2009-04-12T11:17:04-05:00 Thin Film Batteries http://www.svc.org/forums/messages.cfm?threadid=022911D1-B66B-65D1-597F029A17B6DE9C&r=19 Sometimes if the sputtering target is magnetic, such as Co, Ni, Fe or some of their alloys. The pass through flux (PTF) is really important. I had many experiences of customers not being able to strike a plasma due to this issue. That's also the reason some of the sputtering target thickness has to be very thin in order to have good PTF to initiate plasma. If you need more info, please feel free to contact me will.guo@6nmetals.com http://feedproxy.google.com/~r/SocietyOfVacuumCoatersForumConferencePublic/~3/sCd1uIgJAGs/messages.cfm 2009-04-12T11:11:30-05:00 Sputtering Issue http://www.svc.org/forums/messages.cfm?threadid=B3EED1C4-91C0-916E-A67B28CF1E603228&r=20