公开(公告)号：US4098450A

公开(公告)日：1978-07-04

申请号：US778493

申请日：1977-03-17

申请人： Donald L. Keller ,  David L. Resor

发明人： Donald L. Keller ,  David L. Resor

IPC分类号： B22D19/10 ,  B22D21/00 ,  B23K9/235 ,  B23K20/00 ,  B23K20/02 ,  B23K35/38 ,  B23P6/04 ,  C23G5/00 ,  B23K31/00

CPC分类号： B23P6/007 ,  B23K20/00 ,  B23K20/021 ,  B23K35/38 ,  B23K9/235 ,  C23G5/00 ,  B23K2201/001 ,  Y10T29/49746 ,  Y10T29/4975

摘要： A narrow crevice in a Ni-base superalloy article is repaired by first removal of a complex oxide of at least one metal selected from Al and Ti, by treatment of the oxide in the crevice with gaseous active fluoride ions in a non-oxidizing atmosphere at a temperature at which the oxide will react with the fluoride ions under the conditions around the oxide. The crevice is then repaired in a subsequent step such as by filling with metal or pressure bonding.

摘要翻译： 通过在非氧化性气氛中处理气态活性氟离子的缝隙中的氧化物，首先除去选自Al和Ti中的至少一种金属的复合氧化物，来修复Ni基超合金制品中的窄缝隙 氧化物在氧化物周围的条件下与氟离子反应的温度。 然后在随后的步骤中修复缝隙，例如通过填充金属或压力粘合。

公开(公告)号：US3619366A

公开(公告)日：1971-11-09

申请号：US3619366D

申请日：1969-05-06

申请人： WALSTON CHUBB ,  DONALD L KELLER ,  RICHARD A WULLAERT ,  VICTOR W STORHOK

发明人： CHUBB WALSTON ,  KELLER DONALD L ,  WULLAERT RICHARD A ,  STORHOK VICTOR W

IPC分类号： G21C3/16 ,  G21C3/17 ,  G21C3/18

CPC分类号： G21C3/16 ,  G21C3/17 ,  Y02E30/40

摘要： A fuel subassembly for a nuclear reactor incorporating a body of uranium dioxide or mixed uranium-plutonium dioxide fuel within an elongated casing. A gas plenum is located at the top and bottom of the subassembly and a metal tube or rod serving as a heat sink extends along the axis of the subassembly.