BACKGROUND: A review of the literature showed that the core competencies needed by newly graduated Chinese nurses were not as of yet undocumented. OBJECTIVE: To develop a psychometrically sound instrument for identifying and measuring the core competencies needed by Chinese nursing baccalaureate graduates.
A&P here. Zinc chromate is used as a primer on aluminum surfaces as a conversion process to inhibit corrosion. Since nearly all modern aircraft skins and structures are made from aluminum, this compound and its derivatives are the most common primers seen in aircraft manufacturing.
The preferred alloy composition for zinc-nickel plating is 12 â 15% nickel, with the remainder being zinc.This alloy gives exceptional sacrificial corrosion resistance and can be readily passivated. To achieve this alloy, zinc-nickel is usually plated from an alkaline electrolyte.For some applications, including the plating of brake castings, acid zinc-nickel can be used.inally a topcoat can be applied to the zinc-nickel plating and trivalent passivation coatings. The choice of topcoat depends on the application. Advantages of topcoats include: 1  Predictable torque and tension characteristics. 2  Improved corrosion resistance after post-plating deformation operations.