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    High-density and high-strength WC-based cemented carbide
    2.
    发明授权
    High-density and high-strength WC-based cemented carbide 有权
    高密度和高强度WC基硬质合金

    公开(公告)号：US09518308B2

    公开(公告)日：2016-12-13

    申请号：US14138177

    申请日：2013-12-23

    申请人： King Fahd University of Petroleum and Minerals

    发明人： Khwaja Mohammad ,  Nouari Saheb ,  Tahar Laoui ,  Nasser Al-Aqeeli

    IPC分类号： C22C29/08 ,  C22C1/05 ,  B22F3/105

    CPC分类号： C22C1/051 ,  B22F3/105 ,  B22F2003/1051 ,  B22F2301/15 ,  B22F2302/10 ,  B22F2304/054 ,  C22C29/08

    摘要： The synthesis of high performance WC-Co cemented carbides which can be efficiently used in the cutting tool industry. WC with different particle sizes and different grain growth inhibitors were consolidated through spark plasma sintering technique and to form a cemented carbide with best combination of mechanical properties. VC and Cr3C2 are included as grain growth inhibitors in different amounts and combination to the WC-Co powder composition. Higher amount of inhibitors results in lower grain sizes and higher hardness values, however adding more than a crucial amount was observed to degrade the mechanical properties.

    摘要翻译： 合成高性能WC-Co硬质合金，可有效地用于刀具行业。 通过放电等离子烧结技术固化不同粒径的WC和不同的晶粒生长抑制剂，并形成具有最佳机械性能组合的硬质合金。 VC和Cr3C2作为晶粒生长抑制剂以不同的量包含在WC-Co粉末组合物中。 更高量的抑制剂导致较低的晶粒尺寸和较高的硬度值，但是观察到加入超过关键量会降低机械性能。

    Recycled crumb rubber coating
    8.
    发明授权
    Recycled crumb rubber coating 有权
    再生橡胶涂层

    公开(公告)号：US09296913B2

    公开(公告)日：2016-03-29

    申请号：US14325311

    申请日：2014-07-07

    申请人： KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

    发明人： Nasser Al-Aqeeli ,  Hamoud M. Assehdi Al-Hajri

    IPC分类号： C08L63/00 ,  C09D163/00 ,  C09D117/00 ,  C08G59/50 ,  C09D119/00

    CPC分类号： C09D117/00 ,  C08G59/5006 ,  C09D119/003 ,  C09D163/00 ,  C08L17/00 ,  C08L19/003 ,  C08K5/17 ,  C08L63/00

    摘要： The recycled crumb rubber coating is a corrosion-proof coating for piping and the like. The coating is formed from recycled crumb rubber mixed with an epoxy resin and a hardener. Crumb rubber is first mixed with a liquid epoxy resin. An agent for reducing the viscosity of the liquid epoxy resin may also be added. A hardener is then added to this mixture. Finally, powdered crumb rubber is added and mixed to form the recycled crumb rubber coating. The total crumb rubber forms about 23-24 wt % of the coating, the balance being epoxy. The epoxy has liquid epoxy resin and a hardener in a ratio of about 2:1 by weight. The epoxy may also include a viscosity reducing agent of about 1% of the total weight of the liquid resin and the hardener. The crumb rubber may be a blend of powdered crumb rubber and mesh crumb rubber.

    摘要翻译： 再生橡胶涂层是管道等的防腐蚀涂层。 涂层由与环氧树脂和硬化剂混合的再循环的碎屑橡胶形成。 首先将胶泥与液体环氧树脂混合。 也可以添加降低液态环氧树脂的粘度的试剂。 然后将硬化剂加入到该混合物中。 最后，加入粉碎的碎屑橡胶并混合，形成回收的碎屑橡胶涂层。 总粉碎橡胶形成约23-24重量％的涂层，其余为环氧树脂。 环氧树脂具有液体环氧树脂和约2:1重量比的固化剂。 环氧树脂还可以包括约1％的液体树脂和固化剂的粘度降低剂。 碎屑橡胶可以是粉状碎屑橡胶和网状橡胶的混合物。