On-site metallographic replica method

Abstract

The invention discloses an on-site metallographic replica method. The on-site metallographic replica method comprises the following steps that (1) acetone, methyl violet, cellulose acetate and triphenyl phosphate are weighed, and then the acetone, the methyl violet, the cellulose acetate and the triphenyl phosphate are stirred and mixed to obtain a mixed solution, wherein the ratio of the acetoneto the methyl violet to the cellulose acetate to the triphenyl phosphate is 500mL:(0.5-2g):(10-40g):(5-15g); (2) grinding, polishing and etching are performed on an area to be inspected; and (3) the mixed solution obtained in the step (1) is applied to the area to be inspected, drying and film forming are performed, then a film is removed, then the film is bonded to a glass slide, wherein the surface, being in contact with the area to be inspected, on the film faces upward, and finally the film is observed by placing under a metallographic microscope to complete the on-site metallographic replica. The on-site metallographic replica method can avoid the use of AC paper and has a lower liquid using amount.

Description

technical field [0001] The invention belongs to the field of on-site metallographic replica technology, and relates to an on-site metallographic replica method. Background technique [0002] At present, the traditional on-site replica method is to drop one or two drops of acetone on the prepared test surface, clamp the AC paper with tweezers and stick it on the test surface quickly, and apply appropriate pressure with fingers to make the gap between the test surface and the AC paper No bubbles, no gaps, tight fit. [0003] The traditional on-site lamination method mainly has the following problems: [0004] 1) Acetone is highly flammable and volatile, and cannot be carried by public transportation, and acetone is a precursor dangerous chemical. It needs to be approved and filed at the local public security bureau when purchasing. generally difficult to provide; [0005] 2) During the replication process, the AC paper needs to be held by tweezers and quickly pasted on the ...

AI Technical Summary

Problems solved by technology

[0004] 1) Acetone is highly flammable and volatile, and cannot be carried by public transportation, and acetone is a precursor dangerous chemical. It needs to be approved and filed at the local public security bureau when purchasing. The purchase process is relatively long, and it is difficult to supply on-site use in time. Generally difficult to provide;

[0005] 2) The replicating process needs to use tweezers to hold the AC paper and paste it on the surface of the workpiece quickly. This time interval is very small, because acetone is very volatile, and the action is a bit slow, which will lead to replicating failure or the film and the detection surface are not tightly bonded. Appears metallographic structure illusion;

[0006] 3) Gently pressing the AC paper with your fingers requires very high finger strength. Excessive force will cause damage to the AC paper, and small force will cause the AC paper to not fit tightly with the detection surface, which requires high technical requirements for the operator;

[0007] 4) The use of AC paper will be affected when the environment is humid, dusty or squeezed during the carrying process

Images