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Process for producing magnesium alloy surface Ni-Ce-P/nano-TiO2 chemical composite plate

A chemical composite plating, magnesium alloy technology, applied in liquid chemical plating, metal material coating process, coating and other directions, can solve the problem that chemical plating does not have antibacterial properties, and achieve excellent photocatalytic performance, simple equipment, crystallinity, etc. fine grained effect

Inactive Publication Date: 2009-07-29
LIAONING TECHNICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problem that the existing electroless coating on the surface of the magnesium alloy substrate does not have antibacterial properties, the present invention provides a Ni-Ce-P / nano TiO on the surface of the magnesium alloy 2 The method for chemical composite coating, the specific preparation method comprises the following steps:

Method used

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  • Process for producing magnesium alloy surface Ni-Ce-P/nano-TiO2 chemical composite plate
  • Process for producing magnesium alloy surface Ni-Ce-P/nano-TiO2 chemical composite plate
  • Process for producing magnesium alloy surface Ni-Ce-P/nano-TiO2 chemical composite plate

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preparation example Construction

[0034] The invention provides a kind of magnesium alloy surface preparation Ni-Ce-P / nano-TiO 2 The preparation method of chemical composite coating specifically comprises the steps:

[0035] The first step, preprocessing.

[0036] The AZ91D cast magnesium alloy sample was cut, and the surface was first roughened with alumina sandpaper, and then 1 # ,2 # 、3 # 、4 # 、5 # 、6 # Metallographic sandpaper for further grinding, followed by acetone cleaning, alkali cleaning, pickling and activation treatment.

[0037] (a) Cleaning with acetone: cleaning the surface of the magnesium alloy substrate with acetone and ultrasonic vibration for 10-15 minutes, and then cleaning with deionized water.

[0038] (b) Alkali cleaning: put the magnesium alloy plated parts cleaned with acetone into an alkali washing solution at 80-100° C. for 10-15 minutes to remove the oil on the surface of the substrate, and then wash with deionized water.

[0039] Described alkali washing liquid is to conta...

Embodiment 1

[0050] Embodiment one Add 2g / L nano-TiO to the plating solution 2 The chemical composite coating of preparation, concrete steps are:

[0051] The first step, preprocessing.

[0052] The AZ91D cast magnesium alloy sample was cut, the surface was first rough polished with alumina sandpaper, and then further polished with metallographic sandpaper, followed by cleaning, alkali cleaning, pickling and activation treatment. The AZ91D cast magnesium alloy contains (weight percent) 8.50-9.50% of Al, 0.50-0.90% of Zn, 0.17-0.27% of Mn and the balance of Mg.

[0053] (a) Cleaning with acetone: clean the surface of the magnesium alloy substrate with acetone and ultrasonic vibration for 10 minutes, and then clean with deionized water.

[0054] (b) Alkali cleaning: put the magnesium alloy plated parts in an alkali washing solution at 80°C for 10 minutes to remove the oil on the surface of the substrate, and then wash with deionized water.

[0055] Described alkali washing liquid is to ...

Embodiment 2

[0068] Embodiment two Add 4g / L nano-TiO to the plating solution 2 Electroless Composite Coating

[0069] The first step, preprocessing.

[0070] The magnesium alloy sample was cut, and the surface was roughened first with alumina sandpaper, then further polished with metallographic sandpaper, and then cleaned, alkali washed, pickled and activated.

[0071] (a) Cleaning with acetone: clean the surface of the magnesium alloy substrate with acetone and ultrasonic vibration for 15 minutes, and then clean with deionized water.

[0072] (b) Alkali cleaning: put the magnesium alloy plated parts in an alkaline washing solution at 100°C for 15 minutes to remove the oil on the surface of the substrate, and then wash them with deionized water.

[0073] Described alkali washing liquid is to contain NaOH, Na 2 CO 3 10H 2 An aqueous solution of O containing 15 g of NaOH per liter of solution containing Na 2 CO 3 10H 2 O 22.5g.

[0074] (c) Pickling: Put the plated parts after a...

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Abstract

The invention provides a method for preparing a Ni-Ce-P / nano-TiO2 chemical composite plate on the surface of magnesium alloy. The method adopts plating solution prepared by 15-30g / L nickel sulfate, 14-25g / L sodium hypophosphite, 14-25g / L citric acid, 10-25g / L ammonium bifluoride, proper cerous nitrate or bluestone, a stabilizing agent and the like to obtain an antibacterium plate with flat surface, excellent antibacterium performance, good corrosion resistance and abrasion resistance on the surface of the magnesium alloy by oil removing, alkali cleaning, acid cleaning, activating, plating, thermal treating and the like. In ingredients of the chemical composite plate, Ni accounts for about 90 percent, P accounts for about 5 percent, and the balance is basically Ti. The Ni-Ce-P / nano-TiO2 composite plate has excellent photocatalysis performance and obvious degradation rate, and has antibacterium rate reaching 98 percent with obvious bacteriostatic action.

Description

technical field [0001] The invention belongs to the technical field of preparation of composite coatings in materials science, and specifically refers to a Ni-Ce-P / nano-TiO coating on the surface of a magnesium alloy. 2 Preparation method of chemical composite coating. Background technique [0002] In the diversified chemical plating, Ni-Ce-P chemical plating has been studied more, and it is also applied to magnesium alloys, but all studies focus on the wear resistance and corrosion resistance of Ni-Ce-P chemical plating. Antimicrobial properties have not been studied. There are only Tianjin University's "Silver-loaded Ni-P Nano Antibacterial Composite Coating" and Huaiyin Normal University's "Chemical Composite Plating Ni-P-Nano TiO 2 Technology and antibacterial properties" report. But they all prepare antibacterial coatings on the surface of iron and steel materials. There is no report on the research of chemical composite plating antibacterial coatings on the surface o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/36C23C18/18
Inventor 马壮李智超董世知
Owner LIAONING TECHNICAL UNIVERSITY