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Method for preparation of nano-modified amorphous ceramic coating on metal matrix ceramic coating

A technology of ceramic coating and metal substrate, applied in the field of preparing nano-modified amorphous ceramic coating, which can solve the problems of peeling and corrosion resistance, and achieve the effects of low through-hole rate, simple preparation process and wide source of raw materials

Inactive Publication Date: 2014-01-01
天津市卧龙冶金设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, if the amorphous glass glaze is directly bonded to the metal substrate, due to the difference in expansion coefficient between the two, the amorphous glass glaze layer will peel off during use, thereby reducing its corrosion resistance.

Method used

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  • Method for preparation of nano-modified amorphous ceramic coating on metal matrix ceramic coating
  • Method for preparation of nano-modified amorphous ceramic coating on metal matrix ceramic coating
  • Method for preparation of nano-modified amorphous ceramic coating on metal matrix ceramic coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] The first step is to prepare a ceramic coating on the surface of the metal substrate by plasma spraying

[0065] Adopt the known plasma spraying method of this technical field to prepare ZrO on the Fe-Al alloy matrix surface of a workpiece 2 ceramic coating, and remove the floating dust on the surface, in preparation for the ZrO 2 Preparation of nano-modified amorphous ceramic coating on ceramic coating;

[0066] The second step is to prepare nanocrystalline ceramics + amorphous ceramics mixed powder

[0067] (2.1) Configuration of raw materials

[0068] The nanocrystalline ceramic powder used is Y-ZrO 2 Powder, the amorphous ceramic powder used is made of 10.0% B 2 o 3 , 3.0%Al 2 o 3 , 8.0%CaO, 2.5%MgO, 6.5%K 2 O, 8.5%Na 2 O and the rest are SiO 2 The mixed powder of composition, the composition distribution ratio of nanocrystalline ceramics+amorphous ceramic mixed powder is: nanocrystalline ceramic powder accounts for 3.0%, and the rest is amorphous ceramic ...

Embodiment 2

[0094] The first step is to prepare a ceramic coating on the surface of the metal substrate by plasma spraying

[0095] With embodiment 1;

[0096] The second step is to prepare nanocrystalline ceramics + amorphous ceramics mixed powder

[0097] (2.1) Configuration of raw materials

[0098] The nanocrystalline ceramic powder used is nano Y-ZrO 2 Powder, the amorphous ceramic powder used is made of 14.0%B 2 o 3 , 2.5%Al 2 o 3 , 8.5%CaO, 2.5%MgO, 5.0%K 2 O, 9.5%Na 2 O and the rest are SiO 2 The amorphous ceramic mixed powder that forms, the composition distribution ratio of nanocrystalline ceramics+amorphous ceramic mixed powder is: nanocrystalline ceramic powder accounts for 10.0%, and the rest is amorphous ceramic mixed powder, and all above-mentioned % are percentages by weight,

[0099] (2.2) Pretreatment of nanocrystalline ceramic powder

[0100] Weigh nanometer Y-ZrO according to the ratio described in step (2.1) 2 powder, put it into an ion oscillator for depol...

Embodiment 3

[0117] The first step is to prepare a ceramic coating on the surface of the metal substrate by plasma spraying

[0118] With embodiment 1;

[0119] The second step is to prepare nanocrystalline ceramics + amorphous ceramics mixed powder

[0120] (2.1) Configuration of raw materials

[0121] The nanocrystalline ceramic powder used is Y-ZrO 2 Powder, the amorphous ceramic powder used is made of 8.0% B 2 o 3 , 2.5%Al 2 o 3 , 8.5%CaO, 2.5%MgO, 5.5%K 2 O, 10.0%Na 2 O and the rest are SiO 2 The amorphous ceramic mixed powder that forms, the composition distribution ratio of nanocrystalline ceramics+amorphous ceramic mixed powder is: nanocrystalline ceramic powder accounts for 10.0%, and the rest is amorphous ceramic mixed powder, and all above-mentioned % are percentages by weight,

[0122] (2.2) Pretreatment of nanocrystalline ceramic powder

[0123] Weigh nanometer Y-ZrO according to the ratio described in step (2.1) 2 powder, put it into an ion oscillator for depolymer...

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Abstract

Relating to plating of metal materials, the invention provides a method for preparation of nano-modified amorphous ceramic coating on a metal matrix ceramic coating. The method includes the steps of: subjecting nano Y-ZrO2 powder and amorphous ceramic mixed powder composed of 1.0-15.0% of B2O3, 1.0-10.0% of Al2O3, 7.0-10.0% of CaO, 1.0-3.0% of MgO, 4.5-6.5% of K2O, 8.0-10.0% of Na2O and the balance SiO2 to wet mixing in a ball mill for 20min, then conducting drying to obtain a mixture of nanocrystalline ceramics and amorphous ceramic mixed powder, blending the mixture with water in a mass ratio of 1:1-5:3 to form a slurry, spray brushing the slurry onto the metal matrix ceramic coating surface of a workpiece by slurry jetting or slurry coating, and finally performing sintering to form the nano Y-ZrO2 modified amorphous ceramic coating, which has a low through hole rate and can resist 650DEG C high temperature liquid zinc corrosion.

Description

technical field [0001] The technical scheme of the invention relates to the plating of metal materials, specifically a method for preparing a nano-modified amorphous ceramic coating on a metal matrix ceramic coating. Background technique [0002] At the hot-dip galvanizing temperature (460-650°C), liquid zinc is strongly corrosive to almost all metals. Solving the corrosion problem of liquid zinc to metals is a good way for the hot-dip galvanizing industry to improve equipment utilization, reduce energy consumption, It is the key to reduce abnormal zinc consumption, improve production efficiency, improve product quality and reduce production cost. Using iron and steel materials as materials for hot-dip galvanizing equipment not only has a low life span, but also high abnormal zinc consumption; using ceramic materials with better corrosion resistance to liquid zinc as materials for hot-dip galvanizing equipment is not only difficult to form, but also has poor mechanical prope...

Claims

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Application Information

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IPC IPC(8): C23C28/04C23C24/08C23C4/10C23C4/12C23C4/11C23C4/134
Inventor 阎殿然董艳春陈学广张建新杨勇褚振华
Owner 天津市卧龙冶金设备有限公司
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