King Fahd University of Petroleum and Minerals

Anwar Ul-Hamid

Hatim Dafalla Mohamed Dafalla

Muhammad Ali Ehsan

Abbas Saeed Hakeem

Mamdouh Ahmad Al-Harthi

Oki Muraza

Muhammad Atiqullah

Anwar Hossaen

Abdul-Hamid M Emwas

Siripon Anantawaraskul

A method of making a &#x3b2;-SiAlON is described in involves mixing nanoparticles of AlN, AlO, and SiOwith particles of SiNand spark plasma sintering the mixture. The sintering may be at a temperature of 1450-1600&#xb0; C. or about 1500&#xb0; C. The particles of SiNmay be nanoparticles comprising amorphous SiN, or 25-55 &#x3bc;m diameter microparticles comprising &#x3b2;-SiN.

Method of forming a &#x3b2;SiAlON by spark plasma sintering

An AlO-coated co-deposit including an Ni-based alloy substrate, an exterior layer present on a surface of the substrate, wherein the exterior layer comprises NiCrAlY or NiCoCrAlY particles with a diameter of 0.5-50 &#x3bc;m, Ni nanoparticles with a diameter of 0.1-10 nm in the form of a matrix, and AlOparticles that are present on the exterior surface of the exterior layer. A method for manufacturing the AlO-coated co-deposit whereby a substrate is immersed into a solution comprising at least one dissolved nickel salt, NiCrAlY or NiCoCrAlY particles, and Al particles in an electrochemical cell, DC current is pulsed into the electrochemical cell to electrodeposit Al, Ni, and NiCrAlY or NiCoCrAlY particles onto the substrate to form a deposited layer, and the substrate comprising the deposited layer is calcined to oxidize the Al particles and form the AlO-coated co-deposit.

Nickel-based electrochemical cell cathode with an alumina-coated co-deposit

The supported metallocene catalyst for olefin polymerization is (BuCp)ZrClimpregnated onto a silica support having MAO tethered thereon. The catalyst is made by dehydroxylating silica, adding MAO dropwise to a slurry of the silica in toluene, heating the mixture for several hours, reacting (BuCp)ZrClin toluene solvent with the MAO/silica support, and drying the catalyst under vacuum. The catalyst may be used, e.g., to catalyze copolymerization of ethylene with 1-hexene.

Supported metallocene catalyst for olefin polymerization

Alumina-coated co-deposit and an electrodeposition method for the manufacture thereof

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Dhahran, Saudi Arabia

Anwar Ul-Hamid