Nickel-based coating with durability, corrosion resistance and beautiful sex, is one of the most important industrial coatings.The traditional electrolytic plating is one of the most common used for deposition of nickel coating process, it is still widely used at present.However, due to the improvement of the quality and the requirements of environmental protection, the use of chemical nickel plating technology has been increasingly widely used.
Chemical nickel plating (ENP) is a kind of automatic catalytic chemical process, deposits a layer of nickel phosphorus is on the base material (Ni - P alloy coating.Ni-p coating thickness usually range from 1 to 40 microns, depending on the different applications.The phosphorus content of chemical nickel plating layer is different, may affect specific metal performance.The content of phosphorus is usually range from 2% to 15%.The advantages of low phosphorus nickel plating is a complex parts inside and outside is very uniform thickness;While the high phosphorus content for harsh industrial use provides corrosion resistance and ductility.
Of ni-p coating is one of the main advantages of it can provide a very uniform thickness, is not dependent on the components of the geometry.Electroless nickel plating can cover all hidden surface, even in the most complex parts provide complete coating coverage.Chemical nickel plating can be applied to the conductive and the conductive material at the same time, this means that it can also be used for various non-metallic base material, such as plastics and textiles.Chemical nickel coating used in many industries, such as cars, such as bearings and gear assembly), electronic (such as printed circuit boards and connectors), etc.
When need to strict quality control on metal coating, X-ray fluorescence (XRF) analysis is the best overall solution.Modern micro zone XRF instrument, such as the brookM1 MISTRAL, can offer at the same timeCoating thickness and coating composition measurement.
M1 MISTRAL equipped with high performance silicon drift detector (SDD), W or Rh micro focus X-ray tube and the user can choose the size of the collimator, low light spot size to 100 microns.In automatic cameras and programmable XYZ sample platform, with the help of the user can ensure measuring completely in the desired location.
Ni-p coating composition can significantly affect the mechanical properties, corrosion resistance and magnetic, so should not only focus on coating thickness measurement, and phosphorus content in the coating measurement is also crucial.Phosphorus Ka line energy only 2 KeV, information depth is lower than 1 microns, which means that the precise analysis of the phosphorus need excellent instrument hardware and calibration.For Ni - P applications, M1 MISTRAL with Rh target X-ray tube is an excellent choice, as it provides excellent light stimulates the ability.
useM1 MISTRAL,Even if choose small measurement point (collimator), also can with good accuracy and repeatability of monitoring phosphorus content.This makes even a very small part and the measurement area, electroless plating ni-p coating performance can be strict quality control.