公开(公告)号：EP3957418A1

公开(公告)日：2022-02-23

申请号：EP19925123.2

申请日：2019-04-17

申请人： Pukyong National University Industry - University Cooperation Foundation

发明人： KWON, Han Sang

IPC分类号： B22F7/06 ,  B22F3/02 ,  B22F3/105 ,  B22F9/04

摘要： The present disclosure relates to a method for preparing plastic working billets for composite material manufacture comprising: (A) a composite powder preparing step for preparing composite powder by ball-milling two or more types of heterogeneous material powder; and (B) a billet preparing step for preparing multi-layer billets comprising the composite powder. The multi-layer billets comprise a core layer and two or more shell layers surrounding the core layer. The core layer and shell layers excluding the outermost shell layer are formed from the composite powder, and the outermost shell layer is formed from a pure metal or an alloy. The composite powder respectively comprised in the core layer and the shell layers are composed differently. According to the present disclosure, plastic working billets, which resolve the limit of existing single-material billets and enable preparation of a composite material customized for each characteristic such as a clad material, can be prepared.

公开(公告)号：EP3957417A1

公开(公告)日：2022-02-23

申请号：EP19924952.5

申请日：2019-04-17

申请人： Pukyong National University Industry - University Cooperation Foundation

发明人： KWON, Han Sang

IPC分类号： B22F5/00 ,  B22F3/20 ,  B22F9/04 ,  H05K7/20 ,  B22F3/12 ,  B22F7/02 ,  B22F7/06 ,  C22C26/00 ,  H01L23/36 ,  H01L23/373 ,  C22C21/00 ,  B32B15/01 ,  B22F7/04 ,  C22C1/04 ,  C22C1/05 ,  B22F3/02

摘要： The present invention relates to a method of manufacturing an aluminum-based clad heat sink and to an aluminum-based clad heat sink manufactured by the method. The method includes (A) a step of preparing a composite powder by ball-milling (i) aluminum or aluminum-alloy powder and (ii) carbon nanotubes (CNT), (B) a step of preparing a multilayer billet including the composite powder, and (C) a step of directly extruding the multilayer billet using an extrusion die to produce a heat sink. The method has an advantage of producing a light high-strength high-conductivity aluminum-based clad heat sink having an competitive advantage in terms of price by using direct extrusion that is suitable for mass production due to its simplicity in process procedure and equipment required.

公开(公告)号：EP3998364A1

公开(公告)日：2022-05-18

申请号：EP20836032.1

申请日：2020-07-07

申请人： Pukyong National University Industry - University Cooperation Foundation

发明人： KWON, Han Sang

IPC分类号： C22C1/05 ,  C08J3/28 ,  C08J3/20 ,  C08L67/02 ,  C08K3/08 ,  B22F3/12 ,  B22F3/105 ,  C22C1/04

摘要： A method of manufacturing a metal-polymer composite material having excellent thermal conductivity and electrical insulating properties is proposed. The method includes (a) preparing a powder mixture of polymer powder and metal powder, and (b) spark plasma sintering (SPS) the powder mixture to produce a composite material. A metal-polymer composite material having excellent thermal conductivity and electrical insulating properties, manufactured by the method, is also proposed.