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A preparation method of molybdenum silicide whisker toughened zirconia ceramic mobile phone backplane

A technology of zirconia ceramics and molybdenum silicide, which is applied in the field of ceramics, can solve problems such as easy fracture and poor toughness of mobile phone back covers, and achieve the effects of easy operation, improved product properties and market competitiveness, and improved toughness and impact resistance.

Active Publication Date: 2021-01-29
泉州市智通联科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the zirconia ceramic mobile phone back cover prepared by this patent does not modify the zirconia, and there are still problems of poor toughness and easy fracture of the mobile phone back cover.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for preparing a molybdenum silicide whisker toughened zirconia ceramic mobile phone back plate, comprising the following steps:

[0028] (1) Disperse and add 120g of molybdenum silicide whiskers into 10L of isopropanol, and stir for 4 hours at a speed of 300r / min to obtain a suspension A;

[0029] (2) Add 1000g of zirconia raw material to the suspension A obtained in step S1 one by one, and stir for 4 hours at a speed of 250r / min to obtain the suspension B;

[0030] (3) Transfer the suspension B obtained in (2) to a vacuum drying oven at 80ºC for 8 hours to obtain a powdery molybdenum silicide whisker / zirconia precursor;

[0031] (4), transfer the powdery molybdenum silicide whisker / zirconia precursor obtained in (3) to a tubular vacuum atmosphere furnace, slowly raise the temperature to 1300ºC at a heating rate of 2ºC / min, and keep warm at 1300ºC for crystallization 1.5h, then cool down to 650ºC at a cooling rate of 60ºC / min, and then cool naturally from 650º...

Embodiment 2

[0034] A method for preparing a molybdenum silicide whisker toughened zirconia ceramic mobile phone back plate, comprising the following steps:

[0035] (1) Disperse and add 180g of molybdenum silicide whiskers into 10L of isopropanol, and stir for 6 hours at a speed of 400r / min to obtain a suspension A;

[0036] (2) Add 1000g of zirconia raw material to the suspension A obtained in step S1 one by one, and stir for 8 hours at a speed of 300r / min to obtain the suspension B;

[0037] (3), transfer the suspension B obtained in (2) to a vacuum drying oven at 90ºC for 12 hours to obtain a powdery molybdenum silicide whisker / zirconia precursor;

[0038] (4), transfer the powdery molybdenum silicide whisker / zirconia precursor obtained in (3) to a tubular vacuum atmosphere furnace, slowly raise the temperature to 1350ºC at a heating rate of 5ºC / min, and keep warm at 1350ºC for crystallization 3h, then cooled to 700ºC at a cooling rate of 80ºC / min, and then cooled naturally from 700ºC...

Embodiment 3

[0041] A method for preparing a molybdenum silicide whisker toughened zirconia ceramic mobile phone back plate, comprising the following steps:

[0042] (1) Disperse and add 150g of molybdenum silicide whiskers into 10L of isopropanol, and stir for 5 hours at a speed of 350r / min to obtain a suspension A;

[0043] (2) Add 1000g of zirconia raw material to the suspension A obtained in step S1 one by one, and stir for 6 hours at a speed of 275r / min to obtain suspension B;

[0044] (3), transfer the suspension B obtained in (2) to a vacuum drying oven for vacuum drying for 10 hours to obtain a powdery molybdenum silicide whisker / zirconia precursor;

[0045] (4), transfer the powdery molybdenum silicide whisker / zirconia precursor obtained in (3) to a tubular vacuum atmosphere furnace, slowly raise the temperature to 1325ºC at a heating rate of 3.5ºC / min, and keep it warm at 1325ºC Crystallize for 2.2 hours, then cool down to 675ºC at a cooling rate of 70ºC / min, and then cool natur...

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Abstract

The invention discloses a method for preparing a molybdenum silicide whisker toughened zirconia ceramic mobile phone back plate. 12 to 18 parts by weight of molybdenum silicide whiskers are dispersed into isopropanol and stirred to obtain a suspension A; 100 Parts by weight of zirconia raw materials are added to the suspension A one by one, and stirred to obtain the suspension B; the suspension B is transferred to a vacuum drying oven for vacuum drying to obtain a powdery molybdenum silicide whisker / zirconia precursor; the powdery molybdenum silicide The whisker / zirconia precursor is transferred to the atmosphere furnace for sintering into molybdenum silicide whisker toughened zirconia ceramic powder; liquid phenolic resin is added to the molybdenum silicide whisker toughened zirconia ceramic powder, mixed evenly, and injected into the back of the mobile phone In a plate mold, hot press molding is performed to obtain the molybdenum silicide whisker toughened zirconia ceramic mobile phone back plate. The preparation method of the molybdenum silicide whisker-toughened zirconia ceramic mobile phone back plate of the present invention is simple and easy to operate, is conducive to large-scale mass production, and improves product properties and market competitiveness.

Description

technical field [0001] The invention relates to the technical field of ceramics, in particular to a method for preparing a molybdenum silicide whisker toughened zirconia ceramic mobile phone back plate. Background technique [0002] With the continuous development of the mobile phone manufacturing industry and technological updates, the de-metallization of the appearance of mobile phones has become the general trend. Non-metallic materials such as glass appearance accessories and ceramic appearance accessories are gradually replacing metal mobile phone appearance accessories, which have strong market competitiveness. [0003] Ceramic mobile phone accessories have excellent appearance and performance, and are favored by mobile phone manufacturers. Currently, they are limited by cost and production capacity. Compared with other materials, ceramic mobile phone accessories have higher hardness and will not be scratched. At the same time, they have an excellent texture and are as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/12C04B18/02H04M1/18H04M1/02C04B14/38C04B14/30
CPCC04B18/023C04B26/122H04M1/0283H04M1/185C04B14/383C04B14/306
Inventor 林劝雄吴宇尧傅华中
Owner 泉州市智通联科技发展有限公司