CN105088235A - Application method of novel 5-series aluminum alloy (Al-Mg) etchant solution - Google Patents

Abstract

The invention discloses an application method of a novel 5-series aluminum alloy (Al-Mg) etchant solution. The application method includes the steps that 1, 5 ml of HF, 8 ml of HNO3, 3 ml of HCl and 84 ml of distilled water are matched to prepare the etchant solution; 2, a 5-series aluminum alloy (Al-Mg) sample is grinded and polished; 3, the 5-series aluminum alloy (Al-Mg) sample is blown and dried through hot air blown by an electric hair drier, and corrosion is conducted; 4, the etchant solution is dropwise sprayed on the surface of the 5-series aluminum alloy (Al-Mg) sample and wiped with a cotton ball continuously so that the surface of 5-series aluminum alloy (Al-Mg) can be evenly coated with the etchant solution, and the corrosion time ranges from 48 s to 60 s; 5, after it is observed that corrosion patterns are generated on the surface of the sample in the macro level, the 5-series aluminum alloy (Al-Mg) corroded by the etchant solution is cleaned through industrial alcohol; and 6, the 5-series aluminum alloy (Al-Mg) is blown and dried, and the metallographic structure can be observed.

Description

A kind of using method of novel five line aluminium alloys (Al-Mg) etchant solution

Technical field

The present invention relates to a kind of using method of novel five line aluminium alloys (Al-Mg) etchant solution.

Background technology

The metallographic structure of five line aluminium alloys (Al-Mg) is difficult to corrosion, even if out it organizes also often show incomplete in corrosion, thus usually all adopts anode overlay film to add polarisation to observe its metallographic.But this observational technique is not only consuming time, and improves cost of manufacture.Therefore how making the etching pit of five line aluminium alloys (Al-Mg) become simple and fast the same as aluminium alloy is the difficult problem waiting to solve.

Summary of the invention

The technical problem to be solved in the present invention is: the using method providing a kind of novel five line aluminium alloys (Al-Mg) etchant solution, can play effect of etchant solution, to greatest extent to overcome the deficiencies in the prior art.

Technical scheme of the present invention: a kind of using method of novel five line aluminium alloys (Al-Mg) etchant solution, its step comprises:

Step one, preparation proportioning is the etchant solution of 5mlHF, 8mlHNO3,3mlHCl, 84ml distilled water;

Step 2, by five line aluminium alloys (Al-Mg) sample polishing also polishing;

Step 3, by five line aluminium alloys (Al-Mg) sample hair dryer hot blast drying, when specimen temperature reaches about 45 degree, cleans up specimen surface with industrial spirit, starts corrosion;

Step 4, drops in five line aluminium alloys (Al-Mg) specimen surface by etchant solution and with the continuous wiping of cotton balls, etchant solution to be coated in uniformly five line aluminium alloys (Al-Mg) surface, this etching time is 48s-60s;

Step 5, after having " corrosion style ", cleans five line aluminium alloys (Al-Mg) corroded through etchant solution with industrial spirit until macroscopically observing specimen surface;

Step 6, after drying up process, can observe metallographic structure to five line aluminium alloys (Al-Mg).

Beneficial effect of the present invention: the using method of the etchant solution that the present invention adopts, can play effect of etchant solution to greatest extent, compared with common using method, corrosive effect is better, and is beneficial to the observation of metallographic structure.

Specific embodiment

A kind of using method of novel five line aluminium alloys (Al-Mg) etchant solution, its step comprises:

Step one, preparation proportioning is 5mlHF, 8mlHNO ₃, the etchant solution of 3mlHCl, 84ml distilled water.

Step 2, by five line aluminium alloys (Al-Mg) sample polishing also polishing;

Step 3, by five line aluminium alloys (Al-Mg) sample hair dryer hot blast drying, when specimen temperature reaches about 45 degree, cleans up specimen surface with industrial spirit, starts corrosion.

Step 4, drops in five line aluminium alloys (Al-Mg) specimen surface by etchant solution and with the continuous wiping of cotton balls, etchant solution to be coated in uniformly five line aluminium alloys (Al-Mg) surface, this etching time is 48s-60s;

Step 5, after having " corrosion style ", cleans five line aluminium alloys (Al-Mg) corroded through etchant solution with industrial spirit until macroscopically observing specimen surface;

Step 6, after drying up process, can observe metallographic structure to five line aluminium alloys (Al-Mg).

Claims (1)

1. a using method for novel five line aluminium alloys (Al-Mg) etchant solution, its step comprises:

Step one, preparation proportioning is the etchant solution of 5mlHF, 8mlHNO3,3mlHCl, 84ml distilled water;

Step 2, by five line aluminium alloys (Al-Mg) sample polishing also polishing;

Step 3, by five line aluminium alloys (Al-Mg) sample hair dryer hot blast drying, when specimen temperature reaches about 45 degree, cleans up specimen surface with industrial spirit, starts corrosion;

Step 4, drops in five line aluminium alloys (Al-Mg) specimen surface by etchant solution and with the continuous wiping of cotton balls, etchant solution to be coated in uniformly five line aluminium alloys (Al-Mg) surface, this etching time is 48s-60s;

Step 5, after having " corrosion style ", cleans five line aluminium alloys (Al-Mg) corroded through etchant solution with industrial spirit until macroscopically observing specimen surface;

Step 6, after drying up process, can observe metallographic structure to five line aluminium alloys (Al-Mg).