Austenitic stainless steel metallographic etchant, preparing method and use thereof
An austenitic stainless steel and metallographic erosion technology, which is applied in the preparation field of the austenitic stainless steel metallographic etchant, can solve the problems of unclear grain boundaries, fast erosion speed, inconvenient control, etc., and achieve excellent erosion effect, Avoid the effects of poison
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[0023] A metallographic etchant for austenitic stainless steel consists of a mixed solution of hydrofluoric acid and nitric acid, measured by volume, and the ratio of each component is: hydrofluoric acid: nitric acid: water = 2:1:7.
[0024] A kind of preparation method for austenitic stainless steel metallographic etchant, carry out according to the following steps: 1) measure 70 milliliters of water with glass measuring cup, pour in the plastics liquid storage bottle; 2) measure analytical pure nitric acid 10 with plastics measuring cup 3) use a plastic measuring cup to measure 20 milliliters of analytically pure hydrofluoric acid, pour it into the plastic storage bottle and mix well.
[0025] A kind of application of austenitic stainless steel metallographic etchant, operates according to the following methods: 1) hold the qualified austenitic stainless steel metallographic sample of polishing with bamboo tweezers and put it into the austenitic stainless steel metallographic...
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