Korea Institute of Science and Technology

U & I Corporation

Hyun-Kwang Seok

Yu-Chan Kim

Jae-Chul Lee

Ho-In Lee

Ji-Young Byun

Jong-woo Park

Young-Hoon Chung

Ja-Kyo Koo

Sung-Youn Cho

Seok-Jo Yang

Jong-Tack Kim

Do-Hyung Kim

Jin-young Choi

Jang-Won Kim

Kwang-Youn Kim

Eric Fleury

Ki-bae Kim

Hoon Yeub Jeong

Jin-Kook Yoon

Heon-Phil Ha

Yoon-Bae Kim

Jun-Hyun Han

Dow-Bin Hyun

Dohyang Kim

Jayaraj Jayamani

Eun-Young Choi

Mee-soon Lee, Legal Representative

Kyeong-Ho Baik

Kyung-Hun Byun

Seung-Hee Han

Sung-Bai Lee

Jung-Gu Kim

Tae-Hong Lim

This invention relates to a biodegradable implant including magnesium, wherein the magnesium contains, as impurities, (i) manganese (Mn); and (ii) one selected from the group consisting of iron (Fe), nickel (Ni) and mixtures of iron (Fe) and nickel (Ni), wherein the impurities satisfy the following condition: 0&#x3c;(ii)/(i)&#x2264;5, and an amount of the impurities is 1 part by weight or less but exceeding 0 parts by weight based on 100 parts by weight of the magnesium, and to a method of manufacturing the same.

Biodegradable implant and method for manufacturing same

The present invention relates to a magnesium alloy having controlled corrosion resistance properties, which comprises magnesium (Mg) and an alloying element and includes a magnesium phase and a phase composed of magnesium and the alloying element, wherein the difference in electrical potential between the magnesium phase and the phase composed of magnesium and the alloying element is greater than 0 V but not greater than 0.2 V.

Magnesium alloy

Disclosed are a thermal spray coating material which greatly improves corrosion resistance, as compared to conventional AlOand YOcrystalline coatings and Al&#x2014;Y&#x2014;O and Al&#x2014;Zr&#x2014;O amorphous thermal spray coatings, a production method of the coating material, and a coating method using the same. The thermal spray coating material has a chemical formula of YZrO, where x ranges from 0.19 to 0.83, preferably from 0.35 to 0.69. Accordingly, it is possible to produce a coating material for use in a chamber of vacuum plasmas equipment or internal parts of the chamber can be produced, which improves the corrosion resistance of a protective coating film upon ceramic thermal spray coating and lengthens the lifespan of parts.

Multi-component thermal spray coating material and production method and coating method thereof

Disclosed are an apparatus and a method for plasma ion implantation of a solid element, which enable plasma ion implantation of a solid element. According to the apparatus and method, a sample is placed on a sample stage in a vacuum chamber, and the inside of the vacuum chamber is maintained as a vacuum state. And, gas is supplied in the vacuum chamber, a first pulsed DC power is applied to a magnetron sputtering source so as to generate plasma ions of a solid element. The plasma ions of a solid element sputtered from the source are implanted on the surface of the sample. The first power is a pulse DC power capable of applying a high power the moment a pulse is applied while maintaining low average power. And, simultaneously with the applying of the first pulse power, a second power may be supplied to the sample stage, which is a high negative voltage pulse accelerating plasma ions of a solid element to the sample and synchronized to the pulse DC power for magnetron sputtering source. And, inductively coupled plasma may be generated in the vacuum chamber via antenna so as to increase ionization rate of a solid element and lower operation pressure of magnetron sputtering source.

Method and apparatus for plasma ion implantation of solid element

The present invention relates to a method for manufacturing a Fe&#x2014;Si alloy powder. A method for manufacturing a Fe&#x2014;Si alloy powder includes: providing a mixture of an AlOpowder, an active agent powder, a Si powder, and a Fe powder; heating the mixture with a temperature of 700&#xb0; C. to 1200&#xb0; C. in the hydrogen atomosphere; magnetically separating a Fe-containing material from the mixture; and separating a Fe&#x2014;Si alloy powder by soaking the Fe-containing material in an alkali solution. In the heating of the mixture, the Si powder is deposited on the surface of the Fe powder and diffused into the Fe powder.

Method for manufacturing Fe&#x2014;Si alloy powders

The present invention relates to an amorphous alloy and a method for manufacturing thereof. The amorphous alloy according to the present invention includes has a chemical formula of Feioo-a-b-c-d-e-f-gCraMobCcBaYeMflg. Here, the M is at least one selected from a group consisting of Al, Co, N1 and Ni, and the I is at least one selected from a group consisting of Mn, P, S, and O as impurities. The a, b, c, d, e, f, and g are satisfied with the compositions of 16.0 wt %&#x2266;a&#x3c;22.0 wt %, 15.0 wt %&#x3c;b&#x2266;27.0 wt %, 2.0 wt %&#x2266;c&#x3c;3.5 wt %, 1.0 wt %&#x3c;d&#x2266;1.5 wt %, 1.0 wt %&#x3c;e&#x2266;3.5 wt %, 0.25 wt %&#x3c;f&#x2266;3.0 wt %, and 0.01 wt %&#x2266;g&#x3c;0.5 wt %, respectively.

Amorphous alloy and manufacturing method thereof

In a method for fabricating a Si&mdash;Al alloy packaging material, by adding Al&mdash;Si alloy powders to Si powders and pressurizing-forming it, or by pressurizing-filling Si powders or a preforming body of Si powders with Al&mdash;Si alloy melt, a Si&mdash;Al alloy packaging material having good characteristics can be obtained.

Method for fabricating Al-Si alloy packaging material

The present invention relates to a continuous shear deformation device. In order to occur shear deformation at the position at which a material is inserted into a molding path from a rotary guide apparatus for the purpose of solving the problem that the amount of shear deformation of a material is non-uniform and insufficient due to the gap between the curved portion of the molding path and the lower parts of the material, there is provided a continuous shear deformation device, characterized in that a curved portion is constructed by collaboration between the rotary guide apparatus and the molding path. In addition, there are provided additional constructions for effectively performing shear deformation by a small power by reducing the friction at the molding path excepting the curved portion. The present invention thusly constructed can be utilized for continuously and effectively mass-produce sheared materials.

Continuous shear deformation device

The present invention relates to a shear deformation device. To improve the productivity by solving the problem that the amount of shear deformation of a material is not uniform and sufficient due to the gap between the curved portion of the molding path and the lower parts of the material and omitting any additional process for removing irregularity and surface products on the surface of the material, there is provided a shear deformation device capable of scalping, characterized in that a scalping guide path which allows the surface of the material to be separated from the other portions of the material as the material is scalped at a predetermined thickness when passing through the curved portion during shear deformation is formed in the curved portion in communication with the molding path. In addition, there are provided additional constructions for effectively performing shear deformation by a small power by reducing the friction at the molding path excepting the curved portion. The present invention thusly constructed can be utilized for continuously and effectively mass-produce sheared materials.

Shear deformation device for scalping

Growing community of inventors

Seoul, South Korea

Hyun-Kwang Seok