发明名称 |
Diamond-bonded constructions with improved thermal and mechanical properties |
摘要 |
Diamond-bonded constructions include a diamond-bonded body having a thermally stable region extending a distance below a diamond-bonded body surface. The thermally stable region comprises a matrix phase of bonded-together diamond crystals, and interstitial regions comprising a reaction product. The reaction product is formed by reaction between the diamond crystals and a reactive material. The reactant is a carbide former and the reaction product is a carbide. The diamond-bonded body includes a further diamond region extending from the thermally stable region that comprises the matrix phase and a Group VIII metal, such as Fe, Nl or Co, disposed within interstitial regions of the matrix phase. The thermally stable region is substantially free of a catalyst material used to initially form the diamond-bonded body. The diamond-bonded body may include a material layer formed from the reaction product that is disposed on a surface of the diamond-bonded body thermally stable region. Methods of forming the bodies are also claimed which involve high temperatures and pressures. |
申请公布号 |
GB2453435(A) |
申请公布日期 |
2009.04.08 |
申请号 |
GB20080018022 |
申请日期 |
2008.10.02 |
申请人 |
SMITH INTERNATIONAL, INC. |
发明人 |
GEORGIY VORONIN;J DANIEL BELNAP |
分类号 |
E21B10/567;C22C26/00;E21B10/46;E21B10/56 |
主分类号 |
E21B10/567 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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