Shanghai Jiao Tong University

Other

Gm Global Technolgoy Operations, Inc.

Nanjing University of Aeronautics and Astronautics

Shangdong Zhongbaokang Medical Devices Co., Ltd

Fengyang Aiersi Light Alloy Precision Molding Co., Ltd.

Shanghai Mg Power Technology Co., Ltd

Wenjiang Ding

Guangyin Yuan

Aihua A Luo

Xiaoqin Zeng

Zili Liu

Xiqin Liu

Li Shen

Yaofu Jiang

Liming Peng

Yueling Li

Jianxin Zou

Jianxiong Yuan

Yingxin Wang

Zhiguang Ding

Penghuai Fu

Bing Ye

Yongkui Zhu

The-use of magnesium hydride in the preparation of a composition for preventing and treating chronic periodontitis, and a magnesium hydride toothpaste are provided. In the composition or the magnesium hydride toothpaste, magnesium hydride has a weight percentage of 1% to 3%. The toothpaste has the functions of disinfection, anti-inflammation, anti-oxidation, removing tooth stains, improving bad breath, alleviating gingival swelling, bleeding, and recession, and improving periodontitis symptoms. An appropriate amount of magnesium hydride fine particles is added in toothpaste, and the magnesium hydride particles can be hydrolyzed into hydrogen and magnesium ions with anti-inflammatory effects, which can also inhibit alveolar bone resorption. The magnesium hydride-containing composition is safe in use, and can effectively prevent the occurrence and development of periodontal diseases after long-term use.

Use of magnesium hydride in preparation of composition for preventing and treating chronic periodontitis, and magnesium hydride toothpaste

Provided is an integrated device for preparing magnesium hydride powder and a method for preparing magnesium hydride powder. The device comprises a heating chamber for heating a magnesium-based metal material to produce metal droplets; a powder-making chamber comprising an atomizing means used for atomizing the metal droplets which are then cooled to form a metal powder; and a reaction chamber used for performing a hydrogenation reaction on the metal powder to form the magnesium hydride powder. The device is an integrated structure monolithic with a simple structure and a convenient operation; and the entire process of preparing magnesium hydride powder can be completed in this single device and can realize automated control. The preparation method is simple and easy to operate and produces a product that has a moderate size, uniform particles, and excellent performance.

Integrated device for preparing magnesium hydride powder and method for preparing magnesium hydride powder

An MA-MT spinel solid solution-reinforced magnesium oxide-based ceramic foam filter and a preparation therefor. The preparation method comprising: 1) preparing a ceramic slurry having a solid content of 60%-70% by dosing 15%-25% by mass of a nanometer alumina sol, 0.8%-1.5% by mass of a rheological agent, and the balance magnesium oxide ceramic powder comprising a nanometer titanium oxide sintering aid, and then adding deionized water and ball milling to mix until uniform, and then vacuum degassing the mixture; 2) soaking a polyurethane foam plastic template into the ceramic slurry, squeezing by a roller press the polyurethane foam plastic template to remove redundant slurry therein to make a biscuit, and drying the biscuit by heating it to 80&#xb0; C.-120&#xb0; C.; 3) putting the dried biscuit into a sintering furnace, elevating the temperature to 1400&#xb0; C.-1600&#xb0; C. and performing a high temperature sintering, cooling to the room temperature with the furnace to obtain the magnesium oxide-based ceramic foam filter.

Ma-M2T spinel solid solution enhanced magnesium oxide-based ceramic foam filter and preparation method therefor

A biodegradable magnesium alloy nerve conduit for nerve defect repair has multiple lines of through holes in the tube wall thereof, the through holes in each line are axially arranged along a circular tube at equal distances, and the through holes in adjacent lines are arranged in a staggered way. A method for preparing the nerve conduit includes steps of: (step 1) processing a 45-degree conical surface at one end of a magnesium alloy tube blank, carrying out extrusion, and obtaining a magnesium alloy intermediate tube material; (step 2) obtaining a capillary tube after carrying out multi-pass rolling and drawing on the magnesium alloy intermediate tube material; (step 3) carrying out stress relief annealing on the capillary tube, laser cutting and punching, and obtaining a porous conduit; and (step 4) carrying out acid pickling on the porous conduit, and then carrying out electrochemical polishing treatment, and obtaining the nerve conduit.

Biodegradable magnesium alloy nerve conduit for nerve defect repair and its preparation method

The invention provides a friction-welded structure assembly, comprising a first workpiece (B), a second workpiece (C) and a friction welding connecting part (A). The lower side of the friction welding connecting part (A) has a first friction welding junction interface (H) which is in contact with a surface of the first workpiece (B) and a second friction welding junction interface (H) which is in contact with a surface of the second workpiece (C). The friction welding connecting part (A) is tightly pressed on both the first workpiece (B) and the second workpiece (C) which are positioned to be relatively corresponding and fixed to each other, while being moved under a pressure, so as to heat said first friction welding junction interface (H) and said second friction welding junction interface (H), then said friction welding connecting part (A) is stopped under the pressure, and said first friction welding junction interface (H) and said second friction welding junction interface (H) become cool, thereby said first workpiece (B) and said second workpiece (C) are welded together to form the friction-welded structure assembly via said friction welding connecting part (A). Also, The invention relates to a water-cooled internal combustion engine cylinder head using the friction-welded structure assembly described above.

Friction-welded structure assembly, water-cooled internal combustion engine cylinder head, water-cooled internal combustion engine and machine equipped with same

The grain size of magnesium alloys is effectively refined and made smaller by the addition of a small amount of titanium. The effect of the reduction of grain size is often an improvement in the strength and processability of a cast magnesium alloy. Often less than about 0.1% by weight of titanium need be used. It may be preferred to incorporate the titanium with another alloying constituent (such as aluminum) for addition to a melt of a magnesium base alloy.

Magnesium grain-refining using titanium

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