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Silicon carbide fiber toughened phlogopite glass-ceramic multi-phase material and preparation method thereof

A silicon carbide fiber and glass-ceramic technology, applied in the field of silicon carbide fiber-toughened phlogopite glass-ceramic composite materials and its preparation

Pending Publication Date: 2017-05-17
JIANGSU PROVINCE METALLURGICAL DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the current prior art, there is no fusion method to combine silicon carbide fiber and phlogopite glass-ceramic to prepare silicon carbide fiber-toughened phlogopite glass-ceramic composite material

Method used

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  • Silicon carbide fiber toughened phlogopite glass-ceramic multi-phase material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] refer to figure 1 , in step S100, 5 parts by weight of K 2 CO 3 powder, 16 parts by weight of MgO powder, 47 parts by weight of SiO 2 powder, 11 parts by weight of Al 2 o 3 powder and 4 parts by weight of flux B 2 o 3 Powder, respectively 2 parts by weight of crystal nucleating agent Cr 2 o 3 Powder and TiO 2 The powders are blended into a homogeneous mixture. Then in step S200, the above mixture is melted at 1550° C. for 4 hours to ensure sufficient melting of the mixture. Then, at the end of the melting stage in step S200, as shown in step S300, 13 parts by weight of powdered silicon carbide fibers are sprayed into the molten pool through nitrogen flow and fully stirred, so that the silicon carbide fibers are evenly distributed in the molten mixture. A molten mixture containing evenly distributed silicon carbide fibers was obtained. As shown in step S400, the molten mixture obtained in step S300 is poured into a mold fully preheated at 590°C, and annealed a...

Embodiment 2

[0033] refer to figure 1 , in step S100, 6 parts by weight of K 2 CO 3 powder, 16 parts by weight of MgO powder, 45 parts by weight of SiO 2 powder, 10 parts by weight of Al 2 o 3 powder and 5 parts by weight of flux B 2 o 3 Powder, respectively 2 parts by weight of crystal nucleating agent Cr 2 o 3 Powder and TiO 2 The powders are blended into a homogeneous mixture. Then in step S200, the above mixture is melted at 1480° C. for 3 hours to ensure sufficient melting of the mixture. Then, at the end of the melting stage in step S200, as shown in step S300, 11 parts by weight of powdered silicon carbide fibers are sprayed into the molten pool through nitrogen flow and fully stirred, so that the silicon carbide fibers are evenly distributed in the molten mixture. A molten mixture containing evenly distributed silicon carbide fibers was obtained. As shown in step S400, the molten mixture obtained in step S300 is poured into a mold fully preheated at 580°C, and annealed a...

Embodiment 3

[0035] refer to figure 1 , in step S100, 4 parts by weight of K 2 CO 3 powder, 10 parts by weight of MgO powder, 44 parts by weight of SiO 2 powder, 17 parts by weight of Al 2 o 3 powder and 3 parts by weight of flux B 2 o 3 Powder, the crystal nucleating agent Cr of 1 weight part respectively 2 o 3 Powder and TiO 2The powders are blended into a homogeneous mixture. Then in step S200, the above mixture is melted at 1480° C. for 2 hours to ensure sufficient melting of the mixture. Then, at the end of the melting stage in step S200, as shown in step S300, 19 parts by weight of powdered silicon carbide fibers are sprayed into the molten pool through nitrogen flow and fully stirred, so that the silicon carbide fibers are evenly distributed in the molten mixture. A molten mixture containing evenly distributed silicon carbide fibers was obtained. As shown in step S400, the molten mixture obtained in step S300 is poured into a mold fully preheated at 450°C, and annealed at...

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Abstract

The invention discloses a preparation method of a silicon carbide fiber toughened phlogopite glass-ceramic multi-phase material. The preparation method comprises the following steps: mixing K2CO3 powder, MgO powder, SiO2 powder, Al2O3 powder, a fluxing agent and a nucleating agent in proportion to form a uniform mixture; melting and heating the mixture; spraying silicon carbide fibers into a melting tank through nitrogen gas at the final period of a melting process, and sufficiently mixing to form a uniform melted mixture; pouring the melted mixture into a pre-heated mold; annealing the melted mixture poured into the mold; and nucleating basic glass which is obtained by annealing and contains the silicon carbide fibers, and crystallizing to obtain the silicon carbide fiber toughened phlogopite glass-ceramic multi-phase material. The invention further provides the multi-phase material prepared by the method, and the multi-phase material comprises K2CO3, MgO, SiO2, Al2O3, B2O3, Cr2O3, TiO2 and the silicon carbide fibers.

Description

technical field [0001] The invention relates to the field of glass-ceramic composite materials, in particular to a silicon carbide fiber toughened phlogopite glass-ceramic composite material and a preparation method thereof. Background technique [0002] Phlogopite glass-ceramics has the advantages of good machinability, etc., but its application range is limited due to its high brittleness and low toughness. Silicon carbide fiber has high strength and toughness, high thermal conductivity, thermal expansion coefficient similar to that of glass-ceramic materials, and good wear resistance. It is widely used as a toughening fiber in various ceramic substrates. If the phlogopite glass-ceramic is combined with the silicon carbide fiber, the silicon carbide fiber will greatly improve the toughness of the phlogopite glass-ceramic. Some scholars have prepared a carbon fiber-phlogopite glass-ceramic composite material by combining carbon fiber and machinable phlogopite glass-ceramic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/14C03B19/02C03C14/00C03B32/02
CPCC03C10/0009C03B19/02C03B32/02C03C14/002
Inventor 马冬阳边妙莲孙辉陈士朝吴道洪
Owner JIANGSU PROVINCE METALLURGICAL DESIGN INST
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