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Nickel based corrosion-resisting alloy dendritic crystal etching agent and preparation method and using method thereof

A corrosion-resistant alloy and nickel-based technology, which is applied in the field of continuous casting metallographic analysis, can solve the problems of no patent reports on dendrite corrosion technology, and the inability to display the solidified dendrite structure of nickel-based corrosion-resistant alloys, and achieve simple inspection steps Convenient, clear and accurate test results

Active Publication Date: 2015-05-20
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] According to the patent search, in CN200610047773.0 "An Etchant for Displaying the Solidification Structure of Silicon Steel and Its Preparation Method", the disclosed dendrite corrosion technology is only applicable to silicon steel, and cannot display the solidification dendrite structure of nickel-based corrosion-resistant alloys.
At present, from the search of patent documents, the dendrite corrosion reagents involved are mostly solidified dendrite structures suitable for common steel types such as non-ferrous metals or ordinary carbon steel, and there is no continuous casting slab of nickel-based corrosion-resistant alloy suitable for display. Patent report on dendrite corrosion technology of solidified structure

Method used

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  • Nickel based corrosion-resisting alloy dendritic crystal etching agent and preparation method and using method thereof
  • Nickel based corrosion-resisting alloy dendritic crystal etching agent and preparation method and using method thereof
  • Nickel based corrosion-resisting alloy dendritic crystal etching agent and preparation method and using method thereof

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Embodiment 1

[0034] The dendrite corrosion reagent of the nickel-based corrosion-resistant alloy of the present embodiment is composed of stannous chloride, ferric chloride, hydrochloric acid, sodium alkylbenzene sulfonate, absolute ethanol and distilled water, and the specific composition ratio is:

[0035] Stannous Chloride SnCl 2 2H 2 O 6 grams;

[0036] Ferric Chloride FeCl 3 ·6H 2 O 50 grams;

[0037] Hydrochloric acid HCl 50 ml;

[0038] Absolute ethanol C 2 h 5 OH 60ml;

[0039] Sodium Alkylbenzene Sulfonate R-C 6 h 4 -SO 3 Na 20ml;

[0040] 270ml of distilled water.

[0041] Wherein the weight percent of hydrochloric acid concentration is 36%.

[0042]The preparation method of the dendritic corrosion reagent of the nickel-based corrosion-resistant alloy of the present embodiment is carried out according to the following steps:

[0043] First add 270ml of distilled water to the container, then add 50g of ferric chloride, 6g of stannous chloride and 50ml of hydrochloric...

Embodiment 2

[0049] The dendritic corrosion reagent of the nickel-based corrosion-resistant alloy of the present invention is composed of stannous chloride, ferric chloride, hydrochloric acid, sodium alkylbenzene sulfonate, dehydrated alcohol and distilled water, and the specific composition ratio is:

[0050] Stannous Chloride SnCl 2 2H 2 O 18 grams;

[0051] Ferric Chloride FeCl 3 ·6H 2 O 65 grams;

[0052] Hydrochloric acid HCl 80 ml;

[0053] Absolute ethanol C 2 h 5 OH 35ml;

[0054] Sodium Alkylbenzene Sulfonate R-C 6 h 4 -SO 3 Na 15ml;

[0055] 40ml of distilled water.

[0056] Wherein the weight percentage of hydrochloric acid concentration is 38%.

[0057] The preparation method of the dendritic corrosion reagent of the nickel-based corrosion-resistant alloy of the present embodiment is carried out according to the following steps:

[0058] First add 40ml of distilled water to the container, then add 65g of ferric chloride, 18g of stannous chloride and 80ml of hydroc...

Embodiment 3

[0065] The dendrite corrosion reagent of the nickel-based corrosion-resistant alloy of the present embodiment is composed of stannous chloride, ferric chloride, hydrochloric acid, sodium alkylbenzene sulfonate, absolute ethanol and distilled water, and the specific composition ratio is:

[0066] Stannous Chloride SnCl 2 2H 2 O 12 grams;

[0067] Ferric Chloride FeCl 3 ·6H 2 O 70 grams;

[0068] Hydrochloric acid HCl 100 ml;

[0069] Absolute ethanol C 2 h 5 OH 10ml;

[0070] Sodium Alkylbenzene Sulfonate R-C 6 h 4 -SO 3 Na 30ml;

[0071] 300ml of distilled water.

[0072] Wherein the weight percent of hydrochloric acid concentration is 37%.

[0073] The preparation method of the dendritic corrosion reagent of the nickel-based corrosion-resistant alloy of the present embodiment is carried out according to the following steps:

[0074] First add 300ml of distilled water to the container, then add 70g of ferric chloride, 12g of stannous chloride and 100ml of hydroch...

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Abstract

The invention belongs to the technical field of continuous casting metallographic analysis and in particular relates to a nickel based corrosion-resisting alloy dendritic crystal etching agent and a preparation method and a using method of the nickel based corrosion-resisting alloy dendritic crystal etching agent. The nickel based corrosion-resisting alloy dendritic crystal etching agent is prepared from the following ingredients: 6-18g of stannous chloride, 50-70g of ferric chloride, 50-100ml of hydrochloric acid, 15-30ml of sodium alkyl benzene sulfonate, 10-60ml of absolute ethyl alcohol and 40-300ml of distilled water. The using method comprises the following steps: directly pouring the dendritic crystal etching agent on a sample testing surface for pouring corrosion, when a clear dendritic structure is observed on the testing surface after 15-30s, washing etching liquid with water immediately, washing the testing surface with alcohol, and blow-drying by a blower; and observing the defects of the dendritic structure and the solidification structure of the testing surface of the sample by a stereoptic microscope. The testing steps are simple and convenient, and the detection result on the dendritic crystal corrosion is clear and accurate.

Description

Technical field [0001] The present invention is the field of linked gold -phase analysis technology, which involves a kind of corrosion reagent and preparation and use of a nickel -based corrosive alloy. Background technique [0002] The low -power test method of the corrosion of the branch crystal is the increasingly perfect Link -grain low -power test method with the development of the connection technology.Compared with the traditional sulfur printing and hot acid etching, it can not only accurately display the internal defects of the linked blank, but also clearly display the coagulation tissue of the linked blank.By observing the coagulative branches crystal tissue of the linked blank, you can calculate the axis rate, measure the cylindrical crystal deflection angle and the twig crystal of the branch crystal, and then speculate on its solidification conditions.The relevant information between the defects and the coagulation organization, the ways and measures to improve the ...

Claims

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Application Information

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IPC IPC(8): G01N1/32
Inventor 王恩刚王菲许秀杰
Owner NORTHEASTERN UNIV
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