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Preparation of nano-gold filled oxide composite ceramic film

A technology of filling oxides and composite ceramics, which is applied in the field of preparation of nano-gold-filled oxide composite ceramic films, can solve the problems of limiting the wide application and development of nano-metal-ceramic composite films, and achieves easy control of gold filling amount and anti-oxidation. The effect of strong corrosion ability and low relative surface roughness

Inactive Publication Date: 2005-02-02
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the strong chemical reactivity of the metal-oxide precursor sol-gel system severely limits the wide application and development of nano-metal-ceramic composite films.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation process of nano gold-titanium dioxide composite film is as follows:

[0027] (1) Put 1.7mL tetrabutyl titanate, 0.85mL acetylacetone, 0.15mL concentrated hydrochloric acid, and 30mL absolute ethanol in a 100mL flask, and stir at room temperature for 3 hours;

[0028] (2) Weigh 0.0515, 0.1030, 0.1545, 0.2060, 0.3605g HAuCl respectively 4 4H 2 O was dissolved in 20 mL of absolute ethanol;

[0029] (3) HAuCl 4 4H 2 The O solution was slowly added to (1), stirred at room temperature for 1 hour, and left overnight to obtain a clear and transparent gold-titanium dioxide composite sol from orange-red to golden yellow;

[0030] (4) Prepare a sol film on a glass slide, quartz glass or monocrystalline silicon substrate by dipping-pulling method, the film-making temperature is 15-25°C, the relative humidity is 40-60%, and the pulling speed is 42.4cm / min;

[0031] (5) The sol film was dried in the air at room temperature to 70°C, then heated to 200-700°C and ke...

Embodiment 2

[0033] The preparation process of nano gold-aluminum oxide composite film is as follows:

[0034] (1) 1.0212g of aluminum isopropoxide, 1mL of acetylacetone, 0.55ml of concentrated nitric acid, and 30mL of isopropanol were placed in a 100mL flask, stirred vigorously, refluxed for 5 hours, cooled, and aged overnight at room temperature;

[0035] (2) the dehydrated alcohol in embodiment 1 is replaced with Virahol;

[0036] (3) HAuCl 4 4H 2 The O solution was slowly added to (1), stirred at room temperature for 5 hours, and left overnight to obtain a light yellow to golden yellow clear and transparent gold-alumina composite sol;

[0037] (4) Other steps are the same as in Example 1.

Embodiment 3

[0039] The preparation process of nano gold-zirconia composite film is as follows:

[0040] (1) 1.6g ZrOCl 2 ·8H 2 O was heated and dissolved in absolute ethanol, adjusted to PH=2.5, and aged in a water bath for 72 hours;

[0041] (2) Weigh 0.1030g HAuCl 4 4H 2 O was dissolved in 20 mL of absolute ethanol;

[0042] (3) HAuCl 4 4H 2 The O solution was slowly added to (1), stirred at room temperature for 10 hours, and placed overnight to obtain a golden yellow, clear and transparent gold-zirconia composite sol;

[0043] (4) Other steps are the same as in Example 1.

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Abstract

A kind of nanometer gold-filled oxide composite ceramic film material is prepared by use of the sol-gel process. The said process has simple synthesis process, high sol stability and easy-to-control gold filling amount. In the prepared composite ceramic film, gold is in the form of homogeneous, continuous and dispersive nanometer kernel with diameter of 13-30 nm. The composite ceramic film may be used as optical film and friction-reducing and wear-resisting coating under specific working condition.

Description

technical field [0001] The invention describes a preparation method of nano-gold filled oxide composite ceramic film. Background technique [0002] As a new type of functional material, nano-metal-ceramic composite thin film has attracted great attention from scholars at home and abroad in recent years due to its potential application prospects in many fields such as catalysts, electricity, heat, optics, magnetism, and tribology. . The preparation techniques of nanometer metal-ceramic composite films include radio frequency sputtering, ion implantation and sol-gel method, etc. The sol-gel method is considered to be the most effective at present because it can achieve consistency at the molecular level, can fill a variety of metals in different ceramic substrates, and has the advantages of relatively low heat treatment temperature, simple process equipment, and low cost. One of the membrane technology. [0003] However, the strong chemical reactivity of the metal-oxide pre...

Claims

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Application Information

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IPC IPC(8): C04B35/622
Inventor 陈云霞刘维民
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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