公开(公告)号：US10364192B2

公开(公告)日：2019-07-30

申请号：US15917127

申请日：2018-03-09

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Abbas Saeed Hakeem ,  Tahar Laoui ,  Moath Mohammad Almaliki ,  Awais Muhammad Raja Khan ,  Faheemuddin Patel

IPC: C04B35/597 ,  C04B35/64 ,  C04B35/645

Abstract: A Ca—SiAlON ceramic with enhanced mechanical properties and a method employing micron-sized and submicron precursors to form the Ca—SiAlON ceramic. The Ca—SiAlON ceramic comprises not more than 42 wt % silicon, relative to the total weight of the Ca—SiAlON ceramic. The method employs submicron particles and also allows for substituting a portion of aluminum nitride with aluminum to form the Ca—SiAlON ceramic with enhanced mechanical properties.

公开(公告)号：US20190157538A1

公开(公告)日：2019-05-23

申请号：US15815791

申请日：2017-11-17

Applicant: King Fahd University of Petroleum and Minerals

Inventor： Abbas Saeed Hakeem ,  Tahar Laoui ,  Zain Hassan Abdallah Yamani ,  Saleh Mohammed Mabkhoot AlMansour ,  Muhammad Qamaruddin

IPC: H01L35/34

Abstract: A method for ball milling a SnTe alloy into a solid solution or a face-centered cubic crystalline (fcc) phase. A SnTe alloy in the form of nanoparticles of a solid solution or a face-centered cubic crystalline (fcc) phase that can be prepared by this method.

公开(公告)号：US20190077717A1

公开(公告)日：2019-03-14

申请号：US16189581

申请日：2018-11-13

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Abbas Saeed HAKEEM ,  Tahar Laoui ,  Muhammad Ali Ehsan ,  Bilal Anjumn Ahmed

IPC: C04B35/626 ,  C04B35/645 ,  C04B35/628 ,  C04B35/597

CPC classification number: C04B35/62635 ,  C04B35/597 ,  C04B35/62615 ,  C04B35/62625 ,  C04B35/62842 ,  C04B35/645 ,  C04B2235/3206 ,  C04B2235/3418 ,  C04B2235/386 ,  C04B2235/3865 ,  C04B2235/3878 ,  C04B2235/405 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/5454 ,  C04B2235/6562 ,  C04B2235/6565 ,  C04B2235/6567 ,  C04B2235/666 ,  C04B2235/762 ,  C04B2235/766 ,  C04B2235/767 ,  C04B2235/80 ,  C04B2235/96

Abstract: A method for producing a composite of cubic boron nitride dispersed in a SiAlON ceramic. This method involves mixing silicon nitride nanoparticles, aluminum nitride nanoparticles, silica nanoparticles, calcium oxide nanoparticles, and cubic boron nitride microparticles to produce a mixture. The cubic boron nitride may be coated with nickel. The mixture is sintered to produce the composite, and this sintering may involve spark plasma sintering and/or sintering at a relatively low temperature. The composite may comprise a mixture of Ca-α-SiAlON and β-SiAlON ceramic reinforced by boron nitride in either or both cubic and hexagonal phases.

公开(公告)号：US20190077716A1

公开(公告)日：2019-03-14

申请号：US16189517

申请日：2018-11-13

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Abbas Saeed Hakeem ,  Tahar Laoui ,  Muhammad Ali Ehsan ,  Bilal Anjum Ahmed

IPC: C04B35/626 ,  C04B35/645 ,  C04B35/628 ,  C04B35/597

CPC classification number: C04B35/62635 ,  C04B35/597 ,  C04B35/62615 ,  C04B35/62625 ,  C04B35/62842 ,  C04B35/645 ,  C04B2235/3206 ,  C04B2235/3418 ,  C04B2235/386 ,  C04B2235/3865 ,  C04B2235/3878 ,  C04B2235/405 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/5454 ,  C04B2235/6562 ,  C04B2235/6565 ,  C04B2235/6567 ,  C04B2235/666 ,  C04B2235/762 ,  C04B2235/766 ,  C04B2235/767 ,  C04B2235/80 ,  C04B2235/96

Abstract: A method for producing a composite of cubic boron nitride dispersed in a SiAlON ceramic. This method involves mixing silicon nitride nanoparticles, aluminum nitride nanoparticles, silica nanoparticles, calcium oxide nanoparticles, and cubic boron nitride microparticles to produce a mixture. The cubic boron nitride may be coated with nickel. The mixture is sintered to produce the composite, and this sintering may involve spark plasma sintering and/or sintering at a relatively low temperature. The composite may comprise a mixture of Ca-α-SiAlON and β-SiAlON ceramic reinforced by boron nitride in either or both cubic and hexagonal phases.

公开(公告)号：US20180163110A1

公开(公告)日：2018-06-14

申请号：US15882413

申请日：2018-01-29

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

CPC classification number: C09K5/10 ,  F28F23/00 ,  F28F2255/20

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：US09879167B2

公开(公告)日：2018-01-30

申请号：US14752297

申请日：2015-06-26

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: C09K5/00 ,  C09K5/10 ,  F28F23/00

CPC classification number: C09K5/10 ,  F28F23/00 ,  F28F2255/20

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：US20170267589A1

公开(公告)日：2017-09-21

申请号：US15074646

申请日：2016-03-18

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Abbas Saeed HAKEEM ,  Tahar Laoui ,  Moath Mohammad Almaliki ,  Awais Muhammad Raja Khan ,  Faheemuddin Patel

IPC: C04B35/597 ,  C04B35/64

CPC classification number: C04B35/597 ,  C04B35/64 ,  C04B35/645 ,  C04B2235/3208 ,  C04B2235/3869 ,  C04B2235/3878 ,  C04B2235/402 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/5454 ,  C04B2235/6562 ,  C04B2235/666 ,  C04B2235/766 ,  C04B2235/767 ,  C04B2235/78 ,  C04B2235/788 ,  C04B2235/80

Abstract: A Ca—SiAlON ceramic with enhanced mechanical properties and a method employing micron-sized and submicron precursors to form the Ca—SiAlON ceramic. The Ca—SiAlON ceramic comprises not more than 42 wt % silicon, relative to the total weight of the Ca—SiAlON ceramic. The method employs submicron particles and also allows for substituting a portion of aluminum nitride with aluminum to form the Ca—SiAlON ceramic with enhanced mechanical properties.

公开(公告)号：US10377671B2

公开(公告)日：2019-08-13

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: C04B35/64 ,  C04B35/117 ,  C04B35/103 ,  C04B35/628 ,  C22C29/00

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：US10272391B2

公开(公告)日：2019-04-30

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: C02F1/28 ,  C02F1/44 ,  B01D67/00 ,  B01D69/04 ,  B01D69/12 ,  B01D71/02 ,  C02F101/10 ,  C02F103/08

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.

公开(公告)号：US10167234B2

公开(公告)日：2019-01-01

申请号：US15833020

申请日：2017-12-06

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Abbas Saeed Hakeem ,  Tahar Laoui ,  Muhammad Ali Ehsan ,  Bilal Anjum Ahmed

IPC: C04B35/599 ,  C04B35/626 ,  C04B35/597 ,  C04B35/628 ,  C04B35/645

Abstract: A method for producing a composite of cubic boron nitride dispersed in a SiAlON ceramic. This method involves mixing silicon nitride nanoparticles, aluminum nitride nanoparticles, silica nanoparticles, calcium oxide nanoparticles, and cubic boron nitride microparticles to produce a mixture. The cubic boron nitride may be coated with nickel. The mixture is sintered to produce the composite, and this sintering may involve spark plasma sintering and/or sintering at a relatively low temperature. The composite may comprise a mixture of Ca-α-SiAlON and β-SiAlON ceramic reinforced by boron nitride in either or both cubic and hexagonal phases.