Korea Atomic Energy Research Institute

Agency for Defense Development

Lg Hausys, Ltd.

Dong-Jin Kim

Sung-Woo Kim

Zaeill Kim

Hong Pyo Kim

Kyung-Gu Nam

Yeung-Jo Lee

Sujin Jung

Jeong-Min Cha

Jung-Il Son

Yun-Soo Lim

Nam-Choon Kim

Byung-Hak Moon

A low-shock separation device is characterized in that an internal locking structure is unlocked and a bolt is separated by operating a specific part of components thereof using high pressure that is generated by combustion of powder.

Low-shock separation device

The present invention relates to a nickel-based super heat resistant alloy and a method of manufacturing the same. In the nickel-based super heat resistant alloy according to the present invention, an amount of solid solution strengthening elements (chromium, cobalt, molybdenum, or tantalum) is adjusted to improve a mechanical property, such as a creep property, at high temperatures, and aluminum or titanium is included in a predetermined amount to improve a corrosion property. The nickel-based super heat resistant alloy has excellent elongation, strength, and creep properties at normal temperature and high temperatures, and thus it is possible to manufacture parts of, by way of non-limiting example, a thermoelectric power plant, an aircraft, or a very high temperature reactor in various shapes on a large scale.

Nickel-based super heat resistant alloy and method of manufacturing the same

The present invention relates to a block deck used as the interior or exterior material of a building. More specifically, disclosed is a block deck using concrete, wherein a hollow portion is formed inside and filled with concrete so as to exhibit superior strength. The present invention provides a block deck including: a frame member formed with a hollow portion inside; and filler formed of a concrete material so as to be filled in the hollow portion. At this time, the concrete may be foamed according to desired strength with a foaming rate in the range of 0-50%. The frame member may be formed of natural wood, synthetic wood and synthetic resin materials. And, the frame member may be formed integrally or divisionally into two or more so as to be coupled, wherein coupling is carried out by being fitted in a sliding manner.

Block deck using concrete

Growing community of inventors

Daejeon, South Korea

Dong-Jin Kim