Diamond-silicon carbide composite
    2.
    发明授权
    Diamond-silicon carbide composite 有权
    金刚石 - 碳化硅复合材料

    公开(公告)号:US07060641B2

    公开(公告)日:2006-06-13

    申请号:US11110252

    申请日:2005-04-19

    IPC分类号: C04B35/577

    摘要: Fully dense, diamond-silicon carbide composites are prepared from ball-milled microcrystalline diamond/amorphous silicon powder mixture. The ball-milled powder is sintered (P=5–8 GPa, T=1400K–2300K) to form composites having high fracture toughness. A composite made at 5 GPa/1673K had a measured fracture toughness of 12 MPa·m1/2. By contrast, liquid infiltration of silicon into diamond powder at 5 GPa/1673K produces a composite with higher hardness but lower fracture toughness. X-ray diffraction patterns and Raman spectra indicate that amorphous silicon is partially transformed into nanocrystalline silicon at 5 GPa/873K, and nanocrystalline silicon carbide forms at higher temperatures.

    摘要翻译: 由球磨微晶金刚石/非晶硅粉末混合物制备全密度的金刚石碳化硅复合材料。 将球磨粉末烧结(P = 5-8GPa,T = 1400K-2300K)以形成具有高断裂韧性的复合材料。 以5GPa / 1673K制成的复合材料具有12MPa.m 1/2的测得的断裂韧性。 相比之下,以5GPa / 1673K将硅浸入金刚石粉末中产生具有较高硬度但较低断裂韧性的复合材料。 X射线衍射图和拉曼光谱表明,非晶硅在5GPa / 873K下部分转变为纳米晶硅,在较高温度下形成纳米晶碳化硅。

    Diamond-silicon carbide composite
    7.
    发明申请
    Diamond-silicon carbide composite 有权
    金刚石 - 碳化硅复合材料

    公开(公告)号:US20050209089A1

    公开(公告)日:2005-09-22

    申请号:US11110252

    申请日:2005-04-19

    摘要: Fully dense, diamond-silicon carbide composites are prepared from ball-milled microcrystalline diamond/amorphous silicon powder mixture. The ball-milled powder is sintered (P=5-8 GPa, T=1400K-2300K) to form composites having high fracture toughness. A composite made at 5 GPa/1673K had a measured fracture toughness of 12 MPa.m1/2. By contrast, liquid infiltration of silicon into diamond powder at 5 GPa/1673K produces a composite with higher hardness but lower fracture toughness. X-ray diffraction patterns and Raman spectra indicate that amorphous silicon is partially transformed into nanocrystalline silicon at 5 GPa/873K, and nanocrystalline silicon carbide forms at higher temperatures.

    摘要翻译: 由球磨微晶金刚石/非晶硅粉末混合物制备全密度的金刚石碳化硅复合材料。 将球磨粉末烧结(P = 5-8GPa,T = 1400K-2300K)以形成具有高断裂韧性的复合材料。 以5GPa / 1673K制成的复合材料具有12MPa.m 1/2的测得的断裂韧性。 相比之下,以5GPa / 1673K将硅浸入金刚石粉末中产生具有较高硬度但较低断裂韧性的复合材料。 X射线衍射图和拉曼光谱表明,非晶硅在5GPa / 873K下部分转变为纳米晶硅,在较高温度下形成纳米晶碳化硅。

    Ice method for production of hydrogen clathrate hydrates
    8.
    发明授权
    Ice method for production of hydrogen clathrate hydrates 失效
    用于生产氢包合物水合物的冰法

    公开(公告)号:US07371907B2

    公开(公告)日:2008-05-13

    申请号:US10886229

    申请日:2004-07-07

    IPC分类号: F17C11/00 C07C9/00

    CPC分类号: C01B3/001 Y02E60/324

    摘要: The present invention includes a method for hydrogen clathrate hydrate synthesis. First, ice and hydrogen gas are supplied to a containment volume at a first temperature and a first pressure. Next, the containment volume is pressurized with hydrogen gas to a second higher pressure, where hydrogen clathrate hydrates are formed in the process.

    摘要翻译: 本发明包括氢包合水合物合成方法。 首先,在第一温度和第一压力下将冰和氢气供应到容纳体积。 接下来,将容纳体积用氢气加压至第二较高压力,其中在该过程中形成氢包合物水合物。

    Diamond-silicon carbide composite and method
    9.
    发明申请
    Diamond-silicon carbide composite and method 有权
    金刚石 - 碳化硅复合材料及方法

    公开(公告)号:US20060217258A1

    公开(公告)日:2006-09-28

    申请号:US11444649

    申请日:2006-05-31

    申请人: Yusheng Zhao

    发明人: Yusheng Zhao

    IPC分类号: C04B35/577

    摘要: Uniformly dense, diamond-silicon carbide composites having high hardness, high fracture toughness, and high thermal stability are prepared by consolidating a powder mixture of diamond and amorphous silicon. A composite made at 5 GPa/1673K had a measured fracture toughness of 12 MPa·m1/2. By contrast, liquid infiltration of silicon into diamond powder at 5 GPa/1673K produces a composite with higher hardness but lower fracture toughness.

    摘要翻译: 通过固结金刚石和非晶硅的粉末混合物制备具有高硬度,高断裂韧性和高热稳定性的均匀致密的金刚石 - 碳化硅复合材料。 以5GPa / 1673K制成的复合材料具有12MPa.m 1/2的测得的断裂韧性。 相比之下,以5GPa / 1673K将硅浸入金刚石粉末中产生具有较高硬度但较低断裂韧性的复合材料。

    Diamond-silicon carbide composite and method
    10.
    发明授权
    Diamond-silicon carbide composite and method 有权
    金刚石 - 碳化硅复合材料及方法

    公开(公告)号:US07959841B2

    公开(公告)日:2011-06-14

    申请号:US11444649

    申请日:2006-05-31

    申请人: Yusheng Zhao

    发明人: Yusheng Zhao

    IPC分类号: C04B35/577 B28B1/00

    摘要: Uniformly dense, diamond-silicon carbide composites having high hardness, high fracture toughness, and high thermal stability are prepared by consolidating a powder mixture of diamond and amorphous silicon. A composite made at 5 GPa/1673K had a measured fracture toughness of 12 MPa·m1/2. By contrast, liquid infiltration of silicon into diamond powder at 5 GPa/1673K produces a composite with higher hardness but lower fracture toughness.

    摘要翻译: 通过固结金刚石和非晶硅的粉末混合物制备具有高硬度,高断裂韧性和高热稳定性的均匀致密的金刚石 - 碳化硅复合材料。 以5GPa / 1673K制成的复合材料的断裂韧性测定值为12MPa·m1 / 2。 相比之下,以5GPa / 1673K将硅浸入金刚石粉末中产生具有较高硬度但较低断裂韧性的复合材料。