Preparation method of U-Mo alloy powder containing surface layer of ternary alloy and U-Mo alloy powder prepared thereby

The present invention provides a method to manufacture a U-Mo alloy powder with a ternary alloy coating layer, and an alloy powder manufactured thereof. According to the present invention, the method comprises: a first step of mixing a metal silicide powder including one metal selected from a group...

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Bibliographische Detailangaben
Hauptverfasser: KIM, KI NAM, LEE, KYU HONG, PARK, JONG MAN, WON, JU JIN, JEONG, YONG JIN, KIM, SUNG HWAN, LEE, CHONG TAK
Format: Patent
Sprache:eng ; kor
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Zusammenfassung:The present invention provides a method to manufacture a U-Mo alloy powder with a ternary alloy coating layer, and an alloy powder manufactured thereof. According to the present invention, the method comprises: a first step of mixing a metal silicide powder including one metal selected from a group including Ti, Zr, Mo, Ni, Co, Ta, and W with a U-Mo alloy powder by a volume ratio of 2-6:1; and a second step of thermally treating the mixed powder to form a coating layer including a ternary alloy on a surface of the U-Mo alloy powder. Accordingly, provided are advantages capable of manufacturing the U-Mo alloy powder having a uniform U-metal-Si ternary alloy coating layer form on a surface thereof, and capable of preventing a possibility of allowing aluminum, which is a distributed nuclear fuel base, to penetrate the coating layer; thereby decreasing an amount of swelling of nuclear fuel and increasing an integrity of a nuclear fuel irradiation test. 본 발명은 티타늄(Ti), 지르코늄(Zr), 몰리브덴(Mo), 니켈(Ni), 코발트(Co), 탄탈륨(Ta) 및 텅스텐(W)으로 이루어지는 군으로부터 선택된 1종의 금속을 포함하는 금속 실리사이드 분말을 우라늄-몰리브덴(U-Mo) 합금분말과 2 내지 6 : 1의 체적비로 혼합하는 단계(단계 1); 및 상기 혼합된 분말을 열처리하여, 상기 우라늄-몰리브덴(U-Mo) 합금분말 표면에 삼원계 합금을 포함하는 코팅층을 형성시키는 단계(단계 2);를 포함하는, 삼원계 합금 코팅층이 형성된 우라늄-몰리브덴 합금분말 제조방법을 제공한다. 본 발명에 따른 삼원계 합금 코팅층이 형성된 우라늄-몰리브덴 합금분말 제조방법은 균일한 우라늄-금속-실리콘 삼원계 합금 코팅층이 형성된 우라늄-몰리브덴 합금분말을 제조할 수 있고, 분산 핵연료 기지인 알루미늄이 상기 코팅층 내부로 침입할 수 있는 가능성을 사전에 차단하여 핵연료의 팽윤량을 감소시킬 수 있으며, 핵연료의 조사 건전성을 향상시킬 수 있는 장점이 있다.