Hard Bright Gold ORIMA B - Schloetter.de

Hard Bright GoldORIMA BHard Bright Gold ORIMA B is a weak acid electrolyte for the deposition of 24 carat brightgold coatings. The coatings have a thickness of approx. 4 µm and a hardness of120 - 180 HV 0.05 . Hard Bright Gold ORIMA B is easy to maintain and is suitable for technicaland decorative application as well, since it deposits constant gold coatings over the entirecurrent density range. Hard Bright Gold ORIMA B is supplied as a ready-to-use solution(upon request without gold). Depending on its intended purpose three variants are available.Hard Bright Gold ORIMA B can be applied for rack as well as for barrel application and forprinted circuit boards (PCBs). Hard Bright Gold ORIMA B-D with a lower gold content is usedif decorative thin gold coatings are required.The information in this data sheet is based on laboratory as well as practical experience.Figures quoted for operating limits and replenishment quantities are for guidance. Actualvalues necessary will depend on the components being plated (material and geometry), theirapplication and plating plant conditions.Important:Please read this instruction carefully prior to the use of the process and carefully follow all theparameters that have a direct influence on the operation. We reserve the right to make technicalchanges. In the interest of safety, please pay attention to the hazard warnings on the labels of thecontainers. The minimum shelf life of the products is included on the labels and is also available in theappropriate Quality Assurance (QA03).The current IMDS number of the layer deposited from the process is available on the internet atwww.schloetter.com/downloads.For the storage of chemical products the TRGS 510 must be followed.If the additives used in this process contain a SVHC-substance, then this will bespecified in the corresponding Material Safety Data Sheet, section 15.BATH 07020-E Page 1 of 10 Issue 09.01.2012Dr.-Ing. Max SchlötterGmbH & Co. KGTalgraben 3073312 Geislingen/SteigeGermanyTel. +49(0)7331-205-0Fax +49(0)7331-205-123info@schloetter.comw w w.schloetter.comCertified Quality Companyaccording toDIN EN ISO 9001: 2008DIN EN ISO 14001: 2004

1.0 TECHNICAL INFORMATION AND EQUIPMENT REQUIREMENTSTank:Local/Exhaust Ventilation:Part/Electrolyte agitation:Filtration:Anodes:Heating/Cooling:polypropylene, PVC or other qualified plastics, tanks madeof glass are also suitablerecommendeda) usual parts:parallel to the anodes at a rate of 1.5 - 2.5 m/min;stroke length approx. 50 - 80 mm;Variant D requires additional air agitation with oil-free airb) PCBs:from and to the anodes at a rate of 0.5 - 0.8 m/min;stroke length approx. 30 mmin larger plants continuous filtration with 1 - 2 turnovers perhourplatinized titaniumporcelain or PTFE coated immersion heaters2.0 MAKE-UP AND OPERATING CONDITIONS2.1 Product names2.1.1 Technical applicationList of products required for Hard Bright Gold ORIMA B-Static electrolyteProduct name Article no. (AN) SGORIMA B-Static electrolyte with 8.5 g/l gold 071001 1.11ORIMA B-Static electrolyte without gold 071000 1.11ORIMA B Agent 070002 --Brightener ORIMA B 070001 1.12Gold Bath Additive G (see point 4.5) 070701 0.79Orthophosphoric acid, (85 %) p.a.supplied by user* 1.71(see point 2.2 and 4.3)Potassium hydroxide p.a. (see point 4.3) supplied by user* --Activated Carbon; our service department andfield service will be pleased to provide you withdetailed information on suitable activatedcarbon and carbon filter cartridges.(see point 3.1 and 4.5)-- --* Product quality specifications recommended by us can be found on the internet atwww.schloetter.com/downloads.BATH 07020-E Page 2 of 10 Issue 09.01.2012Dr.-Ing. Max SchlötterGmbH & Co. KGTalgraben 3073312 Geislingen/SteigeGermanyTel. +49(0)7331-205-0Fax +49(0)7331-205-123info@schloetter.comw w w.schloetter.comCertified Quality Companyaccording toDIN EN ISO 9001: 2008DIN EN ISO 14001: 2004

2.1.2 Barrel platingList of products required for Hard Bright Gold ORIMA B-Barrel applicationProduct name Article no. (AN) SGORIMA B-Barrel electrolyte with 4.25 g/l gold 071101 1.11ORIMA B Agent 070002 --Brightener ORIMA B 070001 1.12Gold Bath Additive G (see point 4.5) 070701 0.79Orthophosphoric acid, (85 %) p.a.supplied by user* 1.71(see point 2.2 and 4.3)Potassium hydroxide p.a. (see point 4.3) supplied by user* --Activated Carbon; our service department andfield service will be pleased to provide you withdetailed information on suitable activatedcarbon and carbon filter cartridges.(see point 3.1 and 4.5)-- --* Product quality specifications recommended by us can be found on the internet atwww.schloetter.com/downloads.2.1.3 Decorative gold-platingList of products required for Hard Bright Gold ORIMA B-DProduct name Article no. (AN) SGORIMA B-D with 1.7 g/l gold 071201 1.08ORIMA B-D without gold 071200 1.08ORIMA B Agent 070002 --Brightener ORIMA B 070001 1.12Gold Bath Additive G (see point 4.5) 070701 0.79Orthophosphoric acid, (85 %) p.a.supplied by user* 1.71(see point 2.2 and 4.3)Potassium hydroxide p.a. (see point 4.3) supplied by user* --Activated Carbon; our service department andfield service will be pleased to provide you withdetailed information on suitable activatedcarbon and carbon filter cartridges.(see point 3.1 and 4.5)-- --* Product quality specifications recommended by us can be found on the internet atwww.schloetter.com/downloads.2.2 Requirements for a 100 litre bathThree different variants are available according to the respective purpose. All three versionsare delivered as ready-to-use solutions.BATH 07020-E Page 3 of 10 Issue 09.01.2012Dr.-Ing. Max SchlötterGmbH & Co. KGTalgraben 3073312 Geislingen/SteigeGermanyTel. +49(0)7331-205-0Fax +49(0)7331-205-123info@schloetter.comw w w.schloetter.comCertified Quality Companyaccording toDIN EN ISO 9001: 2008DIN EN ISO 14001: 2004

2.3 Make-up sequence for a 100 litre bathOn special request the electrolytes are delivered without gold. Gold Potassium Cyanide mustbe added according to the following table:ElectrolyteAdditionORIMA B-Static electrolyte 12.5 g/l Gold Potassium Cyanide, (68.2 %)ORIMA B-D 2.5 g/l Gold Potassium Cyanide, (68.2 %)Please note, that all tanks and equipment to be used should be thoroughly cleaned prior touse. New unused tanks, filtration equipment etc. or tanks and equipment that have beenused with other electrolytes, should be leached out for 24 hours with 1-vol.% phosphoric acidat approx. 35 °C before use.2.4 Concentrations and operating conditions2.4.1 Static electrolyte (technical application)Range OptimumGold content -- 8.5 g/lElectrolyte density 1.08 - 1.20 -- g/cm³Operating temperature 25 - 40 32 °CCathodic current density 0.6 - 2 1.1 A/dm²Anodic current density max. 1 A/dm²pH range 3.9 - 4.5 4.2Plating rate(at 1.0 A/dm² and 32 °C)approx. 0.25µm/min.Hardness 120 - 180 HV 0.05 kp/mm²The gold coating contains:> 99.5 % Au< 0.5 % CoElectrical resistivity of the gold deposit:at 0 °C 4.9 µΩ/cmat 50 °C 5.6 µΩ/cmBATH 07020-E Page 4 of 10 Issue 09.01.2012Dr.-Ing. Max SchlötterGmbH & Co. KGTalgraben 3073312 Geislingen/SteigeGermanyTel. +49(0)7331-205-0Fax +49(0)7331-205-123info@schloetter.comw w w.schloetter.comCertified Quality Companyaccording toDIN EN ISO 9001: 2008DIN EN ISO 14001: 2004

2.4.2 Barrel electrolyte (barrel plating)Range OptimumGold content -- 4.25 g/lElectrolyte density 1.08 - 1.20 -- g/cm³Operating temperature 25 - 40 32 °CCathodic current density 0.2 - 0.5 0.4 A/dm²Anodic current density max. 1 A/dm²pH range 3.9 - 4.5 4.2Plating rate (at 0.4 A/dm² and 32 °C) 0.05 µm/min.Hardness 120 - 180 HV 0.05 kp/mm²The gold coating contains:> 99.5 % Au< 0.5 % CoSpecific electrical resistivity of thegold deposit:at 0 °C 4.9 µΩ/cmat 50 °C 5.6 µΩ/cm2.4.3 Variant D (decorative gold-plating)Range OptimumGold content -- 1.7 g/lElectrolyte density 1.07 - 1.16 -- g/cm³Operating temperature 25 - 40 32 °CCathodic current density 0.3 - 1.0 0.5 A/dm²Anodic current density max. 1 A/dm²pH range 3.9 - 4.5 4.2Plating rate (at 1.0 A/dm² and 32 °C) 0.06 µm/min.Hardness 120 - 180 HV 0.05 kp/mm²The gold coating contains:> 99.5 % Au< 0.5 % CoSpecific electrical resistivity of thegold deposit:at 0 °C 4.9 µΩ/cmat 50 °C 5.6 µΩ/cm2.5 Consumption and replenishment per AhStatic Barrel Variant Delectrolyte electrolyteGold Potassium Cyanide 3.9 2.2 2.2 gBrightener ORIMA B 3.0 2.0 1.4 mlBATH 07020-E Page 5 of 10 Issue 09.01.2012Dr.-Ing. Max SchlötterGmbH & Co. KGTalgraben 3073312 Geislingen/SteigeGermanyTel. +49(0)7331-205-0Fax +49(0)7331-205-123info@schloetter.comw w w.schloetter.comCertified Quality Companyaccording toDIN EN ISO 9001: 2008DIN EN ISO 14001: 2004

3.0 PROCESS SEQUENCE3.1 Pre-treatmentA clean surface is essential to obtain good plating results. In most cases an intermediatenickel layer should be plated prior to gold plating and then immediately further processedwet-to-wet without intermediate storage of the parts. Nickel Bath NORMA (BATH 04000-E)is especially recommended for plating of intermediate layers on electronic components. Theoperating data sheet is provided upon request. As a precautionary measure, continuousfiltration of the nickel electrolyte with activated carbon or carbon filter cartridges isrecommended. Our service department and field service will be pleased to provide youdetailed information on suitable activated carbon and carbon filter cartridges.If high demands are made on the adhesion of the gold coating, especially if thick layers aredeposited, the following gold pre-plating procedure is recommended. In that case, the partsthat have been just nickel-plated or plated with other intermediate layers are rinsed in waterand will then be pre-plated in a gold electrolyte at a current density of up to 1 A/dm² for about10 to 20 seconds at room temperature. See point 3.2 for detailed information.3.2 Pre-gold platingElectrolyte for pre-gold-platingMake-up60 g/l potassium citrate40 g/l citric acid3 g/l gold potassium cyanideConcentrations and operating conditionsRangeOptimumGold content 2 g/lOperating temperature 20 - 30 25 °CCathodic current densityBarrel: 0.5-- A/dm²Rack: 1.0-- A/dm²pH range 4 - 5 --Treatment time 15 - 30 -- sec.The pH value must be monitored and corrected with potassium hydroxide or citric acid topH 4 - 5 if necessary. The pre-plated parts are immediately transferred in the Hard BrightGold ORIMA B electrolyte without intermediate rinsing. If in exceptional cases a promt furthertreatment of the nickel plated parts is not possible or accidentally a passivation occurs due tobrief anodic poling for example, the nickel layer must be re-activated (see point 3.3) prior topre-plating in the above mentioned gold solution (see point 3.1).BATH 07020-E Page 6 of 10 Issue 09.01.2012Dr.-Ing. Max SchlötterGmbH & Co. KGTalgraben 3073312 Geislingen/SteigeGermanyTel. +49(0)7331-205-0Fax +49(0)7331-205-123info@schloetter.comw w w.schloetter.comCertified Quality Companyaccording toDIN EN ISO 9001: 2008DIN EN ISO 14001: 2004

3.3 ReactivationElectrolyte (Ni-Strike)Make-up250 g/l nickel chloride60 ml/l hydrochloric acid, conc.Concentrations and operating conditionsRangeOptimumElectrolyte temperature 20 - 30 25 °CCathodic current density 2 - 3 -- A/dm²Treatment time 30 - 60 -- sec.Then, the parts are rinsed in water and as described above, pre-plated in the gold solutionfollowed by final plating in Hard Bright Gold ORIMA B.4.0 MAINTENANCE AND FUNCTION OF THE INDIVIDUAL BATH COMPONENTS4.1 Gold- and gold additive contentHard Bright Gold ORIMA B is operated with insoluble anodes. Therefore loss of gold due toplating out must be replenished in continuous intervals with gold potassium cyanide.Statistically calculated consumption values of brightener and gold potassium cyanide, seepoint 2.5. Please note, that due to different current efficiencies of theORIMA B-applications accordingly different consumption figures per ampere-hoursthroughput are given.4.2 Specific gravity (SG) of the electrolyteThe SG for Hard Bright Gold ORIMA B should be between 11 and 24 °Be(1.083 - 1.2), and the SG for Variant B-D should range between 10 and 20 °Be(1.075 - 1.161). The SG should not fall below the recommended minimum value since thiswould result in decreasing bright throwing power. The SG of the electrolyte is adjusted by theaddition of ORIMA B Agent. An addition of 15 g/l ORIMA B Agent increases the specificgravity of the electrolyte by approx. 1 °Be.4.3 pH valueThe pH should range between 3.9 and 4.5 and should be monitored on a regular basis with apH meter. pH values > 4.5 decreases the brightness in the low current density range and pHvalues < 3 result in cracking of the gold cyanide complex. Then gold starts to precipitate andre-dissolves again if the pH is immediately raised, but after extended periods re-dissolution isalmost impossible.Newly made-up solutions are operated at pH 3.9 for 1 or 2 days and then the pH is adjustedto its optimum value 4.2. Corrections are made with orthophosphoric acid p.a. or potassiumhydroxide p.a.BATH 07020-E Page 7 of 10 Issue 09.01.2012Dr.-Ing. Max SchlötterGmbH & Co. KGTalgraben 3073312 Geislingen/SteigeGermanyTel. +49(0)7331-205-0Fax +49(0)7331-205-123info@schloetter.comw w w.schloetter.comCertified Quality Companyaccording toDIN EN ISO 9001: 2008DIN EN ISO 14001: 2004

4.4 AnodesPlatinized titanium anodes are recommended. Expanded metal with a platinum layer of2.5 µm has been proven to be the best. The anodic current density should range between0.3 - 1 A/dm².4.5 ImpuritiesImpurities should be avoided in regard to the high asset of gold electrolytes. Generally,organic foreign substances disturb in the electrolyte and can by experience eliminated inmost cases by activated carbon treatment. A thorough filtration with approx. 1 - 4 g/lactivated carbon filtration is recommended when• either the colour of the gold deposits differs from optimum• if the cathodic current density decreases noticeable• if brownish spots appear on the bright gold surface after extended storage periods• if the gold deposits turn brittleForeign ions of heavy metals and especially iron cause brittle gold coatings as well. Specialcare must be taken to avoid any iron contamination in the electrolyte. The upper limit for ironis 60 to 80 mg/l. The electrolyte must be disposed if the iron concentration is > 80 mg/l, sinceat a deposition of 1 µm gold, cracks and brittleness occur. It must be ensured, that theelectrolyte will never be contaminated with iron. If rubber-lined iron tanks are used, the liningmust be controlled on a regular basis. An electrolyte contaminated with iron cannot becorrected any more.If rubber-lined iron tanks are used, the lining must be controlled on a regular basis since ironcontamination in the electrolyte cannot be corrected. This is the major reason why we rejectstainless steel anodes.Mould may form if Hard Bright Gold ORIMA B is not used over a longer period of time.Although this will only occur in exceptional cases, precautionary 1 ml/l ofGold Bath Additive G should be added to electrolytes which are not used permanently toprevent from mould formation. This additive prevents from mould-cultures. The same amountof Gold Bath Additive G must be added to all post-positioned static rinse tanks. If mould hasalready occurred, 2 - 4 g/l of activated carbon must be stirred in and filtrated prior to theaddition of Gold Bath Additive G.4.6 Filtration, part- and electrolyte agitationThe electrolyte must be continuously filtrated (in circulation) with 1 - 2 turnovers per hour inorder to avoid the existence of suspended particles in the electrolyte. Work piece movementshould be parallel to the anodes at a rate of 1.5 - 2.5 m/min and a stroke length of approx.50 - 80 mm for all common parts. Work piece movement from and to the anodes at a rate of0.5 - 0.8 m/min and a stroke length of 30 mm is recommended for printed circuit boards.When plating in barrels sufficient electrolyte exchange between the solution inside the barreland the surrounding electrolyte outside must be ensured. If this is not possible due to verysmall barrel openings, the pressure pipe of the filter equipment must be placed inside thebarrel. In addition to part agitation, the electrolyte should be re-circulated by air agitation withoil-free air due to the low gold content when plating with ORIMA B-D. All equipment usedwith ORIMA B must be resistant towards the electrolyte solution.BATH 07020-E Page 8 of 10 Issue 09.01.2012Dr.-Ing. Max SchlötterGmbH & Co. KGTalgraben 3073312 Geislingen/SteigeGermanyTel. +49(0)7331-205-0Fax +49(0)7331-205-123info@schloetter.comw w w.schloetter.comCertified Quality Companyaccording toDIN EN ISO 9001: 2008DIN EN ISO 14001: 2004

6.0 EFFLUENTLegal regulations must be observed for disposal of the Hard Bright Gold ORIMA B. Differentregulations normally apply for the additives and the ready-made electrolyte. Please refer tosection 13 of the appropriate Material Safety Data Sheet for disposal code andrecommendations.The following detoxification sequence is only considered to be an aid:Basically, precious metal electrolytes should have a subsequent static- respectively drag-outrinse. For gold electrolytes it’s worth to install a subsequent anion exchanger to obtain acomplete gold recovery and for a complete reconditioning of the concentrates.7.0 SAFETYReasonable care is required when handling chemical products. Only personnel speciallytrained on working with chemicals should be deployed with their handling.EC Material Safety Data Sheets must be made available to all personnel dealing with thechemicals to ensure they have all required information about product composition, hazardsidentification, first-aid measures, handling and storage, exposure controls, toxicological andecological information, etc. It is required to ensure the supply and use of suitable protectiveclothing and -equipment.The user must verify the designated purpose of the electrolyte. Previous experience has shown that not all metalsurfaces are suitable for a trouble-free electroplating.The above mentioned data are made according to our best knowledge. Consistent operation of the working solution requires appropriatemaintenance. Hard Bright Gold ORIMA B is a process of Dr.-Ing. Max Schlötter GmbH & Co KG. It can only be operated with theproducts described in this technical data sheet. Use of other chemicals (also partly) will impair quality and invalidates our service- andquality commitments (quality assurance).BATH 07020-E Page 10 of 10 Issue 09.01.2012Dr.-Ing. Max SchlötterGmbH & Co. KGTalgraben 3073312 Geislingen/SteigeGermanyTel. +49(0)7331-205-0Fax +49(0)7331-205-123info@schloetter.comw w w.schloetter.comCertified Quality Companyaccording toDIN EN ISO 9001: 2008DIN EN ISO 14001: 2004