Title:
SINTERED BORON NITRIDE OBJECT, PRODUCTION METHOD THEREFOR, SETTER, AND VESSEL
Document Type and Number:
WIPO Patent Application WO/2023/190525
Kind Code:
A1
Abstract:
Provided is a sintered boron nitride object which has a porosity of 36 vol% or higher, a bending strength of 5 MPa or higher, and a median pore diameter determined from a pore diameter distribution of 0.5 μm or larger. Also provided is a method for producing the sintered boron nitride object having a bending strength of 5 MPa or higher, the method including a step in which a raw-material mixture comprising a powder of hexagonal boron nitride and a powder of amorphous boron nitride is molded and burned, the content of the powder of amorphous boron nitride in the raw-material mixture being higher than the content of the powder of hexagonal boron nitride and a maximum pressure in the molding being less than 50 MPa.
Inventors:
NONAKA SHUHEI (JP)
Application Number:
PCT/JP2023/012542
Publication Date:
October 05, 2023
Filing Date:
March 28, 2023
Export Citation:
Assignee:
DENKA COMPANY LTD (JP)
International Classes:
C04B38/00; C01B21/064; C04B35/583; C04B35/64
Domestic Patent References:
| WO2014196496A1 | 2014-12-11 | |||
| WO2022210555A1 | 2022-10-06 |
Foreign References:
| JP2000119068A | 2000-04-25 | |||
| JP2013543834A | 2013-12-09 |
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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