发明授权
- 专利标题: Composite constructions with oriented microstructure
- 专利标题(中): 具有定向显微组织的复合结构
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申请号: US10242203申请日: 2002-09-12
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公开(公告)号: US06841260B2公开(公告)日: 2005-01-11
- 发明人: J. Albert Sue , Ghanshyam Rai , Zhigang Fang
- 申请人: J. Albert Sue , Ghanshyam Rai , Zhigang Fang
- 申请人地址: US TX Houston
- 专利权人: Smith International, Inc.
- 当前专利权人: Smith International, Inc.
- 当前专利权人地址: US TX Houston
- 代理机构: Jeffer, Mangels, Butler & Marmaro LLP
- 主分类号: B22F7/06
- IPC分类号: B22F7/06 ; C22C47/00 ; C22C47/02 ; C22C47/14 ; C22C49/00 ; E21B10/52 ; E21B10/56 ; E21B10/567 ; B22F3/00 ; C22C1/09
摘要:
In one embodiment, composite constructions of the invention are in the form of a plurality of coated fibers bundled together to produce a fibrous composite construction in the form of a rod. Each fiber has a core formed from a hard phase material, that is surrounded by a shell formed from a binder phase material. In another embodiment of the invention, monolithic sheets of the hard phase material and the binder phase material are stacked and arranged to produce a swirled composite in the form of a rod. In still another embodiment of the invention, sheets formed from coated fibers are arranged to produce a swirled composite. Inserts for use in such drilling applications as roller cone rock bits and percussion hammer bits, and shear cutters for use in such drilling applications as drag bits, that are manufactured using conventional methods from these composite constructions exhibit increased fracture toughness due to the continuous binder phase around the hard phase of the composites. These binder phases increase the overall fracture toughness of the composite by blunting or deflecting the tip of a propagating crack.
公开/授权文献
- US20030008160A1 Composite constructions with oriented microstructure 公开/授权日:2003-01-09