A kind of electrolytic polishing liquid and polishing method of aluminum-silicon alloy intermetallic compound
An intermetallic compound and electrolytic polishing technology, which is applied in the field of electrolytic polishing liquid, can solve problems such as high operating temperature, harsh production environment, and high risk, and achieve the effects of accurate experimental temperature control, good polishing effect, and good corrosion inhibition effect
Inactive Publication Date: 2016-06-01
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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Problems solved by technology
However, chromic acid electrolytic polishing also has the advantages of large phosphoric acid content, high cost, high operating temperature, large energy consumption, more acid mist in the reaction, harsh production environment, high solution viscosity, and increased consumption; there are also many chromium-free polishing processes that also contain Butanol or ethanol, they are easy to tender organic matter, highly volatile, very dangerous in production, the concentration is roughly so that the sample corrodes seriously during the polishing process, these problems must be solved urgently
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Embodiment 1
[0022] Preferred embodiment 1 of the present invention provides an electrolytic polishing solution for an aluminum-silicon alloy intermetallic compound, comprising the following components: potassium hydroxide 35-110 g / L, potassium phosphate 60-170 g / L, potassium salicylate 10-55 g / L L, polyethylene glycol (600) 15-43g / L, potassium tartrate 8-40g / L, glucose 7-35g / L.
Embodiment 2
[0024] Preferred embodiment 2 of the present invention provides an electrolytic polishing solution of an aluminum-silicon alloy intermetallic compound, comprising the following components: potassium hydroxide 75g / L, potassium phosphate 120g / L, potassium salicylate 30g / L, polyethylene glycol (600) 30g / L, potassium tartrate 20g / L, glucose 21g / L.
Embodiment 3
[0026] Preferred embodiment 3 of the present invention provides an electrolytic polishing solution of an aluminum-silicon alloy intermetallic compound, comprising the following components: potassium hydroxide 60g / L, potassium phosphate 110g / L, potassium salicylate 40g / L, polyethylene glycol (600) 35g / L, potassium tartrate 25g / L, glucose 25g / L.
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The invention provides electrolytic polishing liquid and polishing method of an aluminum-silicon alloy intermetallic compound. The electrolytic polishing liquid comprises the following components: 35-110g / L potassium hydroxide, 60-170g / L potassium phosphate, 10-55g / L potassium salicylate, 15-43g / L polyethylene glycol (600), 8-40g / L potassium tartrate and 7-35g / L glucose. The potassium salicylate, the potassium tartrate and the polyethylene glycol (600) in the electrolytic polishing liquid disclosed by the invention respectively contain carboxyl and hydroxyl to maintain the stability of electrolyte and provide a good corrosion inhibition effect; the polyethylene glycol (600) and the glucose have significant polishing effects; a dual oil-removal effect of saponification action and the emulsification action of a chemical degreaser is more significant. An alloy sample is polished by using the electrolytic polishing liquid and the polishing method provided by the invention, so that not only can a plurality of defects of acid polishing at present be overcome, but also the radiance and the flatness of the obtained alloy sample are equivalent to those of acid electrolytic polishing; the polishing effect on the intermetallic compound is obviously better than that of acid electrolytic polishing.
Description
technical field [0001] The invention relates to an electrolytic polishing liquid of an aluminum-silicon alloy intermetallic compound and a method for electrolytic polishing of an aluminum-silicon alloy intermetallic compound by using the electrolytic polishing liquid. Background technique [0002] Among cast aluminum alloys, cast aluminum-silicon alloys are the most widely used type of aluminum alloys. Due to their unsatisfactory mechanical properties, research on micro-alloying of aluminum-silicon alloys has begun at home and abroad to improve their mechanical properties. In the process of studying the microalloying of aluminum-silicon alloys, the intermetallic compounds formed by microalloying play a vital role in its mechanical and other properties. Importantly, the preparation of metallography mainly applies the point solution polishing method. [0003] At present, electrolytic polishing mainly includes acid electrolytic polishing and alkaline electrolytic polishing. A...
Claims
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IPC IPC(8): C25F3/20
Inventor 赵明卢光华何广平宋辉
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY