公开(公告)号：US10730753B2

公开(公告)日：2020-08-04

申请号：US16171408

申请日：2018-10-26

Applicant: Korea Institute of Science and Technology

Inventor： Sang Whan Park ,  Mi Rae Youm ,  Sung Il Yun

IPC: C01B32/963 ,  B01J27/224

Abstract: The present invention relates to an eco-friendly method for preparing a porous silicon carbide structure, which is capable of preparing a porous silicon carbide structure having meso- or macro-sized pores without using a harmful phenolic resin as a carbon source.

公开(公告)号：US10688478B2

公开(公告)日：2020-06-23

申请号：US16169176

申请日：2018-10-24

Applicant: Korea Institute of Science and Technology

Inventor： Sang Whan Park ,  Mi Rae Youm ,  Sung Il Yun

IPC: B01J27/224 ,  B01J37/02 ,  B01J37/00 ,  B01J37/08 ,  B01J35/04 ,  B01J35/02 ,  B01J37/04 ,  B01J35/10 ,  B01J23/75 ,  B01J23/755

Abstract: The present invention relates to a method for preparing a metal catalyst (Ni, Co, etc.)-supported porous silicon carbide structure having meso- to macro-sized pores, high porosity and superior mechanical properties. Unlike the existing method wherein a porous silicon carbide structure is prepared and then the metal catalyst is infiltrated therein, the preparation of the porous silicon carbide structure and the supporting of the metal catalyst occur at the same time by the mixing metal catalyst material and starting materials. As a result, the metal catalyst is distributed uniformly in the porous silicon carbide structure and it is possible to locate a desired amount of the metal catalyst inside the porous silicon carbide structure.

公开(公告)号：US11634364B2

公开(公告)日：2023-04-25

申请号：US17184081

申请日：2021-02-24

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Sang Whan Park ,  Mi Rae Youm ,  Sung Il Yun ,  Jun Hyung Park

IPC: C04B35/563 ,  C04B35/645

Abstract: The present disclosure provides a boron carbide composite material having a novel composition with excellent mechanical properties, and a production method therefor. The boron carbide composite material has high fracture toughness and may be applied as a lightweight bulletproof ceramic material. The boron carbide composite material is a boron carbide/silicon carbide/titanium boride/graphite (B4C—SiC—TiB2—C) composite material. The composite material may overcome a technical limitation on increasing the fracture toughness of the boron carbide composite material, and may be produced as a high-density boron carbide composite material using a reactive hot-pressing sintering process at a relatively low temperature. The boron carbide composite material having excellent mechanical properties may be applied to general industrial wear-resistant parts and nuclear-power-related industrial parts, and particularly, may be actively used as a lightweight bulletproof material for personal use and for military aircraft including helicopters.