Volume 05 - Surface Engineering Part 7 docx

[...]... Elektrochem., Plating, Plat Surf Finish., Table 6 Physical and mechanical properties of electroless nickel-boron and nickel-phosphorus deposits Property Electroless nickelboron(a) μΩ μ μ Electroless nickelphosphorus(b) Table 7 Effect of boron content and complexing agent on internal stress in DMAB-reduced deposits Complexing agent Internal stress(a) Boron content, % MPa μ ksi μΩ μΩ μΩ Chemical (Electroless)... Table 3 Comparison of the Taber abraser resistance of different engineering coatings Coating Heat treatment for 1 h °C °F Taber wear index, mg/1000 cycles(a) Table 4 Corrosion of electroless nickel coatings in various environments Environment Temperature Corrosion rate Electroless nickel-phosphorus(a) °C °F Electroless nickel-boron(b) μm/yr μm/yr mil/yr mil/yr μ Table 5 The effect of heat treatment... Standards, μ Table 8 Effect of heat treatment of an electroless nickel-5% B coating on the fatigue strength of steel Condition Fatigue strength MPa ksi Metalloberfl.; Angew Elektrochem., Physicochemical Principles of Nickel Plating, Plat Surf Finish., Trans Inst Met Finish., Tijdschr, Oppervlakte Tech Metalen, Plating, Carbon and low-alloy steel Alloy steel (Cr or Ni > 1 %) 300 or 400 series stainless... Availability Valves μ μ μ • Hydrogen evolution: • Electrical contact: • Rinsing: Met Finish., • Soldier-style racking: • Baskets: • Trays: • Barrels: Table 10 Heat treatment of steels to relieve hydrogen embrittlement Maximum specified tensile strength MPa ksi ≤ Heat treatment at 190 to 210 °C ( 375 to 410 °F), h ≤ Chemical (Electroless) Nickel Plating, Metals Handbook, . properties of electroless nickel-boron and nickel-phosphorus deposits Property Electroless nickel- boron (a) Electroless nickel- phosphorus (b) μΩ μ μ Table 7 Effect of boron content and complexing. coatings in various environments Corrosion rateTemperature Electroless nickel-phosphorus (a) Electroless nickel-boron (b) Environment °C °F μm/yr mil/yr μm/yr mil/yr