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1 NiKlad ELV 835 Organically Stabilised Electroless Nickel.

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Presentation on theme: "1 NiKlad ELV 835 Organically Stabilised Electroless Nickel."— Presentation transcript:

1 1 NiKlad ELV 835 Organically Stabilised Electroless Nickel

2 2 Why an Organically Stabilized EN RoHS/WEEE/ELV legislation –Limits metal stabilizers –Competitors reverted to early stabilizers system –Technical issues with early systems More stringent controls being introduced –NSF/51 –JPSSFI Pressure from large OEM’s and Countries –Volvo Black list –China ELV

3 3 Issues with Existing Processes Earlier Stabilizers –Already replaced by Lead and Cadmium for process improvements –Re-used as Cadmium and Lead removed Issues with early formulations –Product stability –Semi matrix systems difficult to produce –Activation of some substrates is very poor, e.g. copper alloys

4 4 Organic Stabilisers They do not presently fall into any “prospective” environmental legislation Originally developed 20 years ago –Elnic 100 organically stabilised –First generation had technical limitations Work started on next generation 3 years ago –Initially, only available as semi bright –Were more difficult to control

5 5 Newer Processes Development over past 2 years Family of 4 processes now developed and in use: –Mid Phos6 – 9%NiKlad ELV 838 –Low Mid Phos4 – 6%NiKlad ELV 835 –Low Phos 1 – 3 %NiKlad ELV 824 –EN StrikeNiKlad ELV 831

6 6 NiKlad ELV 835 Equipment & Operation Experience –Polypropylene tanks - OK –Stainless Steel tanks - OK –6 g/L Nickel use- OK –LMO™ - OK Substrates –Steel- OK –Copper- OK –Brass- OK –Aluminum (cast/wrought)- OK Thicknesses from 0.1 to 11 mils In use at 8 applicators Mid Phos.

7 7 Why Use These Baths RoHS compliant, and as long as the use of nickel is still acceptable…. –No shelf life issues for product stability –Can be used as LMO* –Easy to use and tolerant to abuse * Low Metal Operation

8 8 Deposit Composition Deposit contains only nickel, phosphorus, carbon and sulphur Carbon and sulphur contents are similar to conventional low medium phosphorus

9 9 Deposit Composition NiKlad 767 ppm NiKlad ELV 835 ppm MTO’sCarbonSulphurCarbonSulphur 0< 200173< 400< 50 6< 400414< 200561

10 10 NiKlad ELV 835 - Experiences Stability –Used in Anodically Protected Stainless Steel –Polypropylene –No issues, in fact opinion was in favour of superior stability over conventional systems and at least as good as the ELV systems

11 11 NiKlad ELV 835- Speed

12 12 NLV 835 - Speed Many customers can achieve over 1 mil/Hr (25ums/Hr), even when the bath is old It can be difficult to load the bath when plating this fast Customers are using 10 – 15 o F (6 – 9 o C)lower temperature at nominally the same speed –Saving energy over older chemistry

13 13 NiKlad ELV 835 - Speed

14 14 NiKlad ELV 835 - Gloss

15 15 NiKlad ELV 835 - Gloss Brightness is slightly reduced when compared to conventional systems –This is very true for a new bath –Brightness is comparable to other ELV processes Brightness very consistent over the bath life Some customers like this consistency

16 16 NiKlad ELV 835 - Stress

17 17 NiKlad ELV 835 - Hardness

18 18 NiKlad ELV 835 - Hardness The hardness and wear resistance is superior to medium phosphorus baths It is similar to conventional baths with similar phosphorus contents

19 19 NiKlad ELV 835 - Wear

20 20 NiKlad ELV 835 - Wear

21 21 NiKlad ELV 835 - Corrosion Resistance The process performs to the same standard as 5 – 7% phosphorus baths at customers Electrochemical testing shows similar results with medium and low medium phosphorus baths NSS testing gave > 120 hours with a new solution and 1 mil plating

22 22 NiKlad ELV 835 - Corrosion Resistance 96 Hours

23 23 NiKlad ELV 835 - Corrosion Resistance 144 Hours

24 24 NiKlad ELV 835 - Operational Experience Effect of large additions Operation as an LMO Bath Loading Use of lower temperatures Activation of Substrates

25 25 NiKlad ELV 835 - Operational Experience Effect of large additions –Bath is less sensitive to large additions than conventional chemistry –Largest addition made was >60% in a single addition Bath continued to plate with little or no negative effects

26 26 NiKlad ELV 835 - Operational Experience Operation as an LMO –Ideal, due to low sensitivity to additions –Operation as a LMO does not require controllers Bath Loading –Bath functions in a wide range of bath loadings, from 0.01 to 1.5 ft 2 /gal (0.03 – 4.0 dm 2 /L)

27 27 NiKlad ELV 835 - Operational Experience Use of lower temperatures –As stated earlier, due to the high speed it is possible to reduce the temperature and still obtain good rates Activation of Substrates –Unlike some of the ELV compliant chemistries, activation is very fast

28 28 NiKlad ELV 835 - Operational Experience Bath Life –The bath consumes hypophosphite at the same rate as a normal low medium phosphorus bath. –Can be used to > 8 MTO’s –Due to low stress and high speed useful life is greater than the older conventional systems –Life on aluminum is at least as good as the older conventional systems 6 MTO’s on 7075 alloy with no strike

29 29 NiKlad ELV 835 - Operational Experience Pretreatment Good pretreatment is critical for these processes –Can drag in organics reducing the effectiveness of the stabilisers –It does not smooth over smut as effectively as a cadmium brightened bath –You cannot easily activate copper and brass using palladium

30 30 NiKlad ELV 835 - Summary The use of non metallic stabilisers as a viable alternative to the traditional metallic systems is now production proven These baths have few disadvantages and many advantages including: –Speed –Energy Efficiency –Product Stability –Future Proofing

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