公开(公告)号：US20190336918A1

公开(公告)日：2019-11-07

申请号：US15971862

申请日：2018-05-04

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Tahar LAOUI ,  Hafiz Khurram Shahzad ,  Mohamed Abdrabou Hussein

IPC: B01D71/02 ,  B01D67/00 ,  C02F1/44 ,  C04B35/80 ,  C04B35/64

Abstract: Durable, porous alumina-carbon nanotube membranes and methods for making them using spark plasma sintering. Methods for removing heavy metals such as cadmium from waste water using alumina-carbon nanotube membranes.

公开(公告)号：US20190330116A1

公开(公告)日：2019-10-31

申请号：US16507117

申请日：2019-07-10

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Abbas Saeed HAKEEM ,  Tahar LAOUI ,  Hafiz Muzammil IRSHAD ,  Bilal Anjum AHMED ,  Muhammad Ali EHSAN

IPC: C04B35/117 ,  C04B35/103 ,  C04B35/628 ,  C22C29/12 ,  C04B35/64

Abstract: Conventional sintering processes convert a portion of cBN to hBN which is softer than cBN which negatively affects functional properties of an alumina composite. The invention is directed to method for making an alumina-cubic boron nitride (Al2O3-cBN) composite that contains substantially no hexagonal boron nitride (hBN) by non-conventional spark plasma sintering of cBN with nano-sized alumina particles. The invention is also directed to Al2O3-cBN/Ni composites, which contain substantially no hBN, and which exhibit superior physical and mechanical properties compared to alumina composites containing higher amounts of hBN.

公开(公告)号：US20190119166A1

公开(公告)日：2019-04-25

申请号：US15788914

申请日：2017-10-20

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Abbas Saeed HAKEEM ,  Tahar LAOUI ,  Hafiz Muzammil IRSHAD ,  Bilal Anjum AHMED ,  Muhammad Ali EHSAN

IPC: C04B35/117 ,  C04B35/103 ,  C04B35/64 ,  C04B35/628

CPC classification number: C04B35/117 ,  C04B35/103 ,  C04B35/62842 ,  C04B35/64 ,  C04B2235/3217 ,  C04B2235/386 ,  C04B2235/405 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/5454 ,  C04B2235/6562 ,  C04B2235/666 ,  C04B2235/96 ,  C04B2235/9607 ,  C22C29/12 ,  C22C2026/003

Abstract: Conventional sintering processes convert a portion of cBN to hBN which is softer than cBN which negatively affects functional properties of an alumina composite. The invention is directed to method for making an alumina-cubic boron nitride (Al2O3-cBN) composite that contains substantially no hexagonal boron nitride (hBN) by non-conventional spark plasma sintering of cBN with nano-sized alumina particles. The invention is also directed to Al2O3-cBN/Ni composites, which contain substantially no hBN, and which exhibit superior physical and mechanical properties compared to alumina composites containing higher amounts of hBN.

公开(公告)号：US20190256383A1

公开(公告)日：2019-08-22

申请号：US16403014

申请日：2019-05-03

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Faizur RAHMAN ,  Tahar LAOUI

IPC: C02F1/44

Abstract: A desalination cell which works with flat membranes for water purification purposes. A feed fluid is stirred on a feed side of the membrane to minimize cake formation. A purified liquid is formed on the permeate side of the membrane, and a reject fluid formed on the feed side of the membrane. When thick ceramic membranes are used, the desalination cell can be adapted to have a sealing gasket around the circumference of the membrane to prevent the feed fluid from by-passing the membrane and contaminating the purified fluid.

公开(公告)号：US20150176106A1

公开(公告)日：2015-06-25

申请号：US14138177

申请日：2013-12-23

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Khwaja MOHAMMAD ,  Nouari SAHEB ,  Tahar LAOUI ,  Nasser AL-AQEELI

IPC: C22C29/02 ,  C22C1/05 ,  B22F3/105

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

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20190010375A1

公开(公告)日：2019-01-10

申请号：US16035295

申请日：2018-07-13

Applicant: King Fahd University of Petroleum and Minerals

Inventor： MUATAZ ALI ATIEH ,  Abdallah Darweesh MANASRAH ,  Usamah Ahmad AL-MUBAIYEDH ,  Tahar LAOUI ,  Rached BEN-MANSOUR

IPC: C09K5/10 ,  F28F23/00

Abstract: A nanofluid composed of a base fluid and a solid nanocomposite particle, where the solid nanocomposite particle consists of a carbon nanotube and a metal oxide nanoparticle selected from the group consisting of Fe2O3, Al2O3, and CuO. The metal oxide nanoparticle is affixed inside of or to the outer surface of the carbon nanotube, and the solid nanocomposite particle is homogeneously dispersed in the base fluid. The heat transfer and specific heat capacity properties of the nanofluid are measured using differential scanning calorimetry and heat exchanger experiments with different nanocomposite concentrations and different metal oxide percent loadings.

公开(公告)号：US20170312697A1

公开(公告)日：2017-11-02

申请号：US15651688

申请日：2017-07-17

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Muataz Ali ATIEH ,  Ihsanullah ,  Tahar LAOUI

IPC: B01D67/00 ,  B01D71/02 ,  C02F1/28 ,  B01D69/04 ,  B01D69/12 ,  C02F103/08 ,  C02F101/10

CPC classification number: B01D67/0083 ,  B01D67/0041 ,  B01D69/04 ,  B01D69/12 ,  B01D71/021 ,  B01D71/024 ,  B01D2323/08 ,  B01D2323/46 ,  B01D2325/02 ,  C02F1/288 ,  C02F1/44 ,  C02F2101/10 ,  C02F2103/08 ,  C02F2305/08

Abstract: A process for making an iron oxide impregnated carbon nanotube membrane. In this template-free and binder-free process, iron oxide nanoparticles are homogeneously dispersed onto the surface of carbon nanotubes by wet impregnation. The amount of iron oxide nanoparticles loaded on the carbon nanotubes range from 0.25-80% by weight per total weight of the doped carbon nanotubes. The iron oxide doped carbon nanotubes are then pressed to form a carbon nanotube disc which is then sintered at high temperatures to form a mixed matrix membrane of iron oxide nanoparticles homogeneously dispersed across a carbon nanotube matrix. Methods of characterizing porosity, hydrophilicity and fouling potential of the carbon nanotube membrane are also described.