How Hard is Nickel Phosphorus Plating?

Nickel-phosphorus plating technology is an advanced metal surface protection technology developed in recent years. Without DC power equipment, the workpiece is directly immersed in a plating solution with a temperature of 90 degrees Celsius to 95 degrees Celsius to complete the plating deposition. It has the advantages of low investment, stable process, The product has the advantages of reliable quality and low economic cost. You must have some understanding of it. Today, I will share with you how to test the hardness of nickel-phosphorus plating.

When nickel plating is carried out, the nickel-phosphorus coating obtained by controlling the phosphorus content is dense, non-porous, and has far greater corrosion resistance than electroplating nickel, and also has the advantages of high chemical stability, uniform thickness and high hardness. Its detection method is mainly Use a microhardness tester to measure the hardness under the pressure of zero point 98. The whole process is to put the sample on the sample stage of the microhardness tester, select an appropriate load, and turn on the power.

Adjust the focal length under the microscope of 400 times until the surface morphology of the sample can be clearly seen, turn the indenter to the sample, press start to start indentation, and then turn the 400 times microscope to the top of the sample, look for the indentation, turn right Turn the drum wheel to make the left measurement line align with the left end point of the indentation, turn the drum wheel to make the right measurement line close to the left measurement line, and then record the displayed scale. After turning the drum wheel to make the right measurement line tangent to the right end point, read the scale .2 Subtract the recorded value from the numerical value, calculate half of the recorded value and look up the table to get the hardness value.