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Aluminium nitride fiber cordierite glass ceramic multiphase material and preparation method thereof

A technology of fiber cordierite and aluminum nitride fiber, which is applied in the field of aluminum nitride fiber cordierite glass-ceramics composite phase material and its preparation

Pending Publication Date: 2017-06-27
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 aluminum nitride fiber and cordierite glass-ceramic to prepare aluminum nitride fiber cordierite glass-ceramic composite material

Method used

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  • Aluminium nitride fiber cordierite glass ceramic multiphase material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] refer to figure 1 , in step S100, the MgO powder of 19 weight parts, the SiO of 53 weight parts 2 powder, 11 parts by weight of Al 2 o 3 powder, 3 parts by weight of flux B 2 o 3 Powder and the crystal nucleus agent Cr that are respectively 2 parts by weight 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 1540° 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, 10 parts by weight of powdered aluminum nitride fibers are sprayed into the molten pool through nitrogen flow and fully stirred, so that the aluminum nitride fibers are uniformly dispersed in the molten mixture. distribution so as to obtain a molten mixture containing a uniform distribution of aluminum nitride fibers. As shown in step S400, the molten mixture obtained in step S300 is poured into a mold fully preheated at 550°C, and annealed at 55...

Embodiment 2

[0032] refer to figure 1 , in step S100, the MgO powder of 16 weight parts, the SiO of 52 weight parts 2 powder, 11 parts by weight of Al 2 o 3 Powder, 2 parts by weight of flux B 2 o 3 powder and 2 parts by weight of crystal nucleating agent Cr 2 o 3 powder and 1 part by weight of 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, 17 parts by weight of powdered aluminum nitride fibers are sprayed into the molten pool through nitrogen flow and fully stirred, so that the aluminum nitride fibers are uniformly dispersed in the molten mixture. distribution so as to obtain a molten mixture containing a uniform distribution of aluminum nitride fibers. As shown in step S400, the molten mixture obtained in step S300 is poured into a mold fully preheated at 550°C, and annealed at 55...

Embodiment 3

[0034] refer to figure 1 , in step S100, the MgO powder of 28 weight parts, the SiO of 65 weight parts 2 powder, 25 parts by weight of Al 2 o 3 powder, 7 parts by weight of flux B 2 o 3 powder and 1 part by weight of crystal nucleating agent Cr 2 o 3 powder and 3 parts by weight of TiO 2 The powders are blended into a homogeneous mixture. Then in step S200, the above mixture is melted at 1550° C. for 5 hours to ensure sufficient melting of the mixture. Then, at the end of the melting stage in step S200, as shown in step S300, 8 parts by weight of powdered aluminum nitride fibers are sprayed into the molten pool through nitrogen flow and fully stirred, so that the aluminum nitride fibers are uniformly dispersed in the molten mixture. distribution so as to obtain a molten mixture containing a uniform distribution of aluminum nitride fibers. As shown in step S400, the molten mixture obtained in step S300 is poured into a mold fully preheated at 490°C, and annealed at 520...

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Abstract

The invention discloses a method of preparation of an aluminium nitride fiber cordierite glass ceramic multiphase material. The preparation method comprises the following steps that MgO powder, SiO2 powder, Al2O3 powder, a fluxing agent and a nucleation agent are mixed into a uniform mixture in proportion; the mixture is fused and heated; in the last phase of the fusing process, aluminium nitride fiber is sprayed into a fusing pond through nitrogen and the mixture is stirred fully into a uniform fused mixture; the fused mixture is poured into a preheated mould; the fused mixture poured into the mould is annealed; and basic glass which contains the aluminium nitride fiber and is obtained by annealing is nucleated and crystallized to obtain the aluminium nitride fiber cordierite glass ceramic multiphase material. The invention further provides the aluminium nitride fiber cordierite glass ceramic multiphase material which is prepared with the method and comprises the following composites of MgO, SiO2, Al2O3, B2O3, Cr2O3, TiO2 and the aluminium nitride fiber.

Description

technical field [0001] The invention relates to the field of glass-ceramic composite materials, in particular to an aluminum nitride fiber cordierite glass-ceramic composite material and a preparation method thereof. Background technique [0002] Cordierite glass-ceramic is a glass-ceramic with excellent performance, which has the advantages of low dielectric loss, good thermal stability and high mechanical strength, but because it is a combination material of crystal phase and amorphous phase, its general toughness is low . [0003] Glass-ceramics are generally prepared by sintering or melting methods, among which the cordierite glass-ceramics prepared by the melting method has a relatively high volume density and low porosity, but if the fusion method is used to combine aluminum nitride fibers and glass-ceramics Firstly, it is necessary to solve the problem that the aluminum nitride fiber is easily oxidized at high temperature; secondly, it is necessary to solve the probl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C14/00C03C10/08C03B32/02
CPCC03C14/002C03B32/02C03C10/0045C03C2214/02C03C2214/30
Inventor 马冬阳边妙莲孙辉陈士朝吴道洪
Owner JIANGSU PROVINCE METALLURGICAL DESIGN INST