Light-color Magnetic Particle For Security and the Fabrication Method Thereof

• Main Authors: CHOI HYE JUN, KIM HYUN SOO, KIM SOO DONG, KIM HONG KEON, CHOE WON GYUN, KIM E DEN
• Format: Patent
• Language: English; Korean
• Published: 28.07.2020
• Subjects: BASIC ELECTRIC ELEMENTS; CASTING; COLOUR PRINTING; ELECTRICITY; INDUCTANCES; LINING MACHINES; MAGNETS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; PERFORMING OPERATIONS; POWDER METALLURGY; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; STAMPS; TRANSFORMERS; TRANSPORTING; TYPEWRITERS; WORKING METALLIC POWDER

The present invention relates to light-colored magnetic particles for security and a manufacturing method thereof. The light-colored magnetic particles for security according to the present invention includes: a magnetic core; a phosphate shell surrounding the magnetic core; and a metal shell surrounding the phosphate shell. In the light-colored magnetic particles for security according to the present invention, the phosphate shell is positioned between the magnetic core and the metal shell. Therefore, it is possible to tune magnetic properties, and there is an advantage of having improved insulation and excellent heat resistance. 본 발명에 따른 보안용 담색 자성 입자는 자성 코어; 상기 자성 코어를 감싸는 인산염 쉘; 상기 인산염 쉘을 감싸는 금속 쉘;을 포함한다. 본 발명에 따른 보안용 담색 자성 입자는 자성 코어와 금속 쉘 사이에 인산염 쉘이 위치함으로써, 자성 특성의 튜닝이 가능하며, 향상된 절연성 및 우수한 내열성을 갖는 장점이 있다.