ENDEP 11 is an electroless nickel plating process formulated to deposit a semi-bright to bright, high phosphorus – nickel alloy exhibiting high intrinsic corrosion resistance .
ENDEP 11 is capable of deposition rates 0.3 to 0.5 mils per hour without sacrificing bath stability. Optimum phosphorus levels of 10 to 12 are usually obtained at plating rates of 0.3 – 0.5 mils producing optimum corrosion resistant deposits.
ENDEP 11 is supplied as a three-component liquid system. ENDEP 11 A and ENDEP 11 B are only used for bath make-up. The bath concentration is maintained with ENDEP 11 A and ENDEP 11 C.
Advantages of the ENDEP 11 process include:
WARRANTY AND DISCLAIMER: This information is based on our experience and is, to the best of our knowledge, true and accurate. MAR-Tech Holdings Inc. gives no warranty, expressed or implied and the products are sold upon condition that the purchasers will make their own tests to determine the quality and suitability of the product. Any information or suggestions are given without warranty of any kind and the purchasers are solely responsible any loss arising from the use of such information.
|Phosphorus Content Range||10 - 12 (wt. %)|
|Melting Range:||880 °C (1620°F)|
|Hardness||450 Knoop Hardness|
|Magnetic Properties (Coactivity):||Non-Magnetic|
|Nitric Acid Test:||Pass|
|Hydrochloric Acid Test||Pass|
|Hardness (as plated)||480 - 520 Vickers|
|Wear Properties (as plated)|
|Taber Index Value||15 – 18 mg/1000 cycles loss|
|Corrosion Properties||1000+ hrs. Salt Spray Test ASTM B117|
|ENDEP 11 A||6.0% by volume|
|ENDEP 11 B||18% by volume|
|Deionized Water||To operating volume|
To ensure proper operation of the ENDEP 11 system, the solution chemistry must be maintained between 85% and 105% of initial activity. This is accomplished by measuring and monitoring the nickel metal concentration via a standard EDTA titration.
The ENDEP SYSTEM is designed to be replenished in a 1:1 of the 11A and 11C.
Upon determination of the nickel metal concentration, additions of both ENDEP 11 A and ENDEP 11 C or ENDEP 11 D are made based on the following calculation and/or replenishment guide.
To increase the nickel content by 1 g/l, add 1 litre of ENDEP 11 A per 100 litres of plating solution.
To increase the reducer content by 1 g/l, add 2ml/ litre of ENDEP 11 C.
The ENDEP 11 D is designed as a self regulating pH system and to raise the reducer by 1 g/l, an addition of 2 ml/litres of ENDEP 11 D.