Abstract:
PURPOSE: A method for bonding a metal member and a ceramic member is provided to bond the metal member and the ceramic member in an atmospheric condition without an insertion metal or an adhesive. CONSTITUTION: A method for bonding a metal member and a ceramic member includes: a step of meshing or overlapping the metal member with the ceramic member; a step of placing the tool of a milling machine on a portion in which the metal member is overlapped with the ceramic member; a step of moving the tool along the portion; and a step of removing burr at a bonding surface between the metal member and the ceramic member. The metal member includes nonferrous metal and ferrous metal, and the ceramic member includes carbonized, nitrified, and oxidized ceramics. [Reference numerals] (AA) Step of meshing or overlapping the metal member with the ceramic member; (BB) Step 110; (CC) Step of placing the tool of a milling machine on a portion in which the metal member is overlapped with the ceramic member; (DD) Step 120; (EE) Step of moving the tool along the overlapped portion; (FF) Step 130; (GG) Step of removing burr at a bonding surface; (HH) Step 140
Abstract:
PURPOSE: A novel cholera vaccine containing an E2 antigen gene or transgenic plant expressing the gene is provided to produce an antibody to the E2 antigen and prevent cattle sickness. CONSTITUTION: An E2 antigen gene of swine cholera protein contains ER-tagged sequence or ER-retention sequence. The E2 antigen gene contains a sequence of sequence number 1. An E2 antigen protein contains amino acid sequence of sequence number 2. An expression vector for transforming a plant which is able to express E2 antigen contains the E2 antigen gene. The expression vector is E2/pB7WG2D(deposit number KACC 95087P). A plant which expresses the E2 antigen gene includes crop for livestock feed.
Abstract:
본 발명은 마찰교반 접합방법 및 이를 이용한 접합 구조체에 관한 것이다. 본 발명은 마찰교반 접합을 위해 서로 밀착된 접합재의 일면에 삽입홈을 형성하는 단계; 삽입홈에 접합 물질을 삽입하는 단계; 접합 물질을 덮도록 상기 접합재 일면에 테이프를 부착하는 단계; 삽입홈이 형성된 접합재 일면의 반대면을 마찰교반하는 단계를 포함한다. 이와 같은 본 발명에 의하면, 접합부의 복합소재 및 합금화가 가능한 마찰교반 접합방법을 이용하여 접합 시에 삽입된 접합 물질이 외부로 유출되지 않고 접합부의 결함 또한 방지할 수 있다.
Abstract:
PURPOSE: A friction stir process method capable of producing composition or alloy and composition or alloy produced by said method are provided to produce a composition or an alloy from a desired portion of a material. CONSTITUTION: A friction stir process method capable of producing composition or alloy comprises a step of generating a groove in a structure(100); a step of sticking a tape(130) on the filled groove after filling the groove with a different material(120) from the structure; a step of turning over the structure for the taped portion to face down; a step of performing a friction stir process on the opposite side of the taped portion along the groove on the structure. The tape may be made of the same material of the structure or a similar material of the structure. A step of removing burr on the surface of the structure may be included following the friction stir process.
Abstract:
PURPOSE: A friction stir welding method and a coupling structure using the same are provided to prevent the leakage of a filler material and defects in a weld zone. CONSTITUTION: A friction stir welding method comprises the steps of: forming an insertion groove(14) on one side of welded materials(10) butte against each other, inserting a filler material to the insertion groove, attaching tape(30) to one side of the welded materials to cover the filler material, and friction-stir-welding the opposite side of the welded materials to the insertion groove, wherein the filler material is different from the welded materials and the tape is the same material as the filler material.