公开(公告)号：US20230235431A1

公开(公告)日：2023-07-27

申请号：US17583234

申请日：2022-01-25

Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： YEN-CHUNG CHEN ,  KER-JER HUANG ,  CHUEN-MING GEE ,  WEI-TING HSU

IPC: C22C29/06 ,  C22F1/00

CPC classification number: C22C29/067 ,  C22C29/062 ,  C22F1/00

Abstract: The present invention provides a preparation method of a light metal/boron carbide composite material, comprising: (A) providing a boron carbide precursor and a light metal powder to perform a pretreatment mixing process to form a precursor; (B) performing a vacuum hot pressing molding or a vacuum cold isostatic pressing molding on the precursor to make the precursor form a light metal/boron carbide compound green body that is uniform; (C) performing a thermal treatment on the light metal/boron carbide compound green body to make the light metal/boron carbide compound green body form a light metal/boron carbide compound sintered body; and (D) performing a cold rolling treatment or a hot rolling treatment on the light metal/boron carbide compound sintered body to obtain a light metal/boron carbide composite material.

公开(公告)号：US20160165766A1

公开(公告)日：2016-06-09

申请号：US14558847

申请日：2014-12-03

Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： YEN-CHUNG CHEN ,  SUNG-YING TSAI ,  HUNG-FANG HUANG ,  JEN-BING WON ,  MING-DER GER

IPC: H05K9/00

CPC classification number: H05K9/0081 ,  B22F9/24 ,  C22C1/0425 ,  C22C3/00 ,  C22C5/06 ,  C22C9/00 ,  C22C19/03 ,  C22C33/02 ,  C22C38/02 ,  C22C38/06 ,  C22C38/16 ,  H05K9/0083

Abstract: A method for making an electromagnetic wave shielding material comprises the steps of (a) mixing ternary Fe—Al—Si alloy powders and a solvent to prepare a Fe—Al—Si solution; (b) adding an acid in the Fe—Al—Si solution to release Fe ions through a dissolution reaction; (c) adding copper chloride powders in the Fe—Al—Si solution; (d) adding a lye in the Fe—Al—Si solution to induce a displacement reaction; (e) adding a silane coupling agent in the Fe—Al—Si solution; (f) placing the Fe—Al—Si solution in a microwave reactor to accelerate the displacement reaction; (g) producing a quaternary Cu—Fe—Al—Si alloy after the displacement reaction of the Fe—Al—Si solution, thereby forming a quaternary Cu—Fe—Al—Si alloy solution, which proceeding with a solid-liquid separation and a drying treatment to obtain an electromagnetic wave shielding material composed of quaternary Cu—Fe—Al—Si alloy in solid powders.

Abstract translation: 制造电磁波屏蔽材料的方法包括以下步骤：（a）将三元Fe-Al-Si合金粉末和溶剂混合以制备Fe-Al-Si溶液; （b）在Fe-Al-Si溶液中加入酸以通过溶解反应释放Fe离子; （c）在Fe-Al-Si溶液中加入氯化铜粉末; （d）在Fe-Al-Si溶液中加入碱液以引起置换反应; （e）在Fe-Al-Si溶液中加入硅烷偶联剂; （f）将Fe-Al-Si溶液置于微波反应器中以加速置换反应; （g）在Fe-Al-Si溶液置换反应之后生成四价Cu-Fe-Al-Si合金，从而形成一种进行固液分离的四元Cu-Fe-Al-Si合金溶液， 进行干燥处理，得到固体粉末中由四元Cu-Fe-Al-Si合金构成的电磁波屏蔽材料。

公开(公告)号：US20220289635A1

公开(公告)日：2022-09-15

申请号：US17197059

申请日：2021-03-10

Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： YEN-CHUNG CHEN ,  SHANG-WANQ YEH

IPC: C04B35/80 ,  C04B35/626 ,  C04B35/64 ,  C04B35/634 ,  B28B1/24 ,  B28B11/24

Abstract: A method for preparing a carbon/boron carbide composite material includes the following steps (A) providing a carbon compound, a carbon fiber, a boron compound and a binder to perform a pretreatment mixing procedure to form a precursor; (B) putting the precursor into a spray granulator for performing a granulation process and mixing the precursor to form an injection material with a uniform composition; (C) feeding the injection material into an injection molding machine for performing a compression molding process, thereby forming a carbon compound/boron compound green body; and (D) subjecting the carbon compound/boron compound green body to a two-stage heat treatment process to obtain the carbon/boron carbide composite material.

公开(公告)号：US20170327426A1

公开(公告)日：2017-11-16

申请号：US15150546

申请日：2016-05-10

Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： LI-JIUAN CHEN ,  YEN-CHUNG CHEN ,  HONG-FANG HUANG ,  YU-CHUN WU

IPC: C04B41/80 ,  C04B35/44

CPC classification number: C04B41/80 ,  C04B35/44 ,  C04B2235/3217 ,  C04B2235/3224 ,  C04B2235/3225

Abstract: A method of inhibiting an irregular aggregation of a nanosized powder includes (A) providing a nanosized ceramic powder to perform thereon a thermal analysis and thereby attain an endothermic peak temperature; (B) performing an impurity-removal heat treatment on the nanosized ceramic powder at a temperature higher than the endothermic peak temperature; (C) switching the nanosized ceramic powder from a temperature environment of the impurity-removal heat treatment to an environment of a temperature higher than a phase change temperature of the nanosized ceramic powder, followed by performing a calcination heat treatment on the nanosized ceramic powder in the environment of the temperature higher than the phase change temperature of the nanosized ceramic powder, wherein the nanosized ceramic powder skips the temperature environment between impurity-removal heat treatment and calcination heat treatment to shun generating a vermicular structure, avoid crystalline irregularity and abnormal growth, reduce particle aggregation, and achieve satisfactory distribution.