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Silicon carbide-containing particle, method of manufacturing a silicon carbide-based sintered object, silicon carbide-based sintered object, and filter

A technology containing silicon carbide particles and silicon carbide, which is applied in membrane filters, chemical instruments and methods, filtration and separation, etc., and can solve problems such as catalyst support layer peeling off

Active Publication Date: 2013-05-01
IBIDEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the regeneration process of the honeycomb filter, when the local temperature of the honeycomb filter rises, etc., there is a problem that the catalyst-supported layer is peeled off.

Method used

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  • Silicon carbide-containing particle, method of manufacturing a silicon carbide-based sintered object, silicon carbide-based sintered object, and filter
  • Silicon carbide-containing particle, method of manufacturing a silicon carbide-based sintered object, silicon carbide-based sintered object, and filter
  • Silicon carbide-containing particle, method of manufacturing a silicon carbide-based sintered object, silicon carbide-based sintered object, and filter

Examples

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Embodiment

[0075] Next, the present invention will be described based on examples.

[0076] As shown in Table 1, using 12 kinds of silicon carbide-containing particles whose abundance ratios of 3C, 4H, 6H and 15R polymorphs in silicon carbide were adjusted, samples of silicon carbide sintered bodies were produced according to the above-mentioned procedures (Example 1 to 9 and comparative examples 1 to 3).

[0077] [Table 1]

[0078]

[0079] In addition, the sample of the silicon carbide sintered body is a honeycomb-shaped silicon carbide sintered body ( Hereinafter referred to as "honeycomb filter"). In this embodiment, the shape of the cross-section of each hole perpendicular to the length direction of the hole is a square. Also, the size of the honeycomb filter was 34.3 mm×34.3 mm×150 mm (hereinafter referred to as "honeycomb filter A"). The temperature for firing the silicon carbide-containing particles is 2200° C., and the time for firing the silicon carbide-containing partic...

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Abstract

A silicon carbide-containing particle that contains silicon carbide is provided, wherein the silicon carbide contains at least one of silicon carbide with polymorph 6H and silicon carbide with polymorph 15R and a total content of the silicon carbide with polymorph 6H and the silicon carbide with polymorph 15R in the silicon carbide is 70 % or more by weight. A method of manufacturing a silicon carbide-based sintered object using the silicon carbide-containing particle, a silicon carbide-based sintered object that can be obtained by using the silicon carbide-containing particle, and a filter that includes the silicon carbide-based sintered object are also provided.

Description

technical field [0001] The present invention relates to silicon carbide-containing particles, a method for producing a silicon carbide sintered body, a silicon carbide sintered body, and a filter. Background technique [0002] Conventionally, as a filter for trapping particles contained in exhaust gas from automobiles and the like, a filter composed of a honeycomb structure of a sintered ceramic is used, and silicon carbide is mainly used for the ceramic from the viewpoint of durability of the sintered body. [0003] Usually, silicon carbide particles as a raw material are molded into a molded body having a predetermined shape, and then the molded body is fired to obtain a silicon carbide sintered body. [0004] For example, Patent Document 1 discloses a method of mixing β-type polycrystalline silicon carbide with an average particle size of 0.1 μm to 5 μm with an average particle size in the range of 0.5 μm to 100 μm and an average particle size larger than β-type polycryst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/36B01D39/20C04B35/626
CPCB01D2257/702B01D53/944C04B2235/383C04B38/0006C04B2111/00129C04B2111/0081Y02T10/20B01D2258/012C04B35/565C04B2111/00793B01D2255/30F01N3/0222B01D2259/4566C04B2235/96C04B2235/3834B01D2255/9207Y10T428/24149Y02T10/12C04B38/0054B01D53/94B01D2201/62B01D2255/915
Inventor 神山达也高松昇司
Owner IBIDEN CO LTD
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