公开(公告)号：US20210129272A1

公开(公告)日：2021-05-06

申请号：US16667920

申请日：2019-10-30

Applicant: National Chung-Shan Institute of Science and Technology

Inventor： Chao-Yu Lin ,  Chao-Nan Wei ,  Chien-Hung Liao ,  Hui-Yun Po ,  Sheng-Long Lee ,  Yu-Chih Tseng ,  Vun-Shing Chengn

IPC: B23K35/30 ,  B23K35/02 ,  C22C19/05

Abstract: The present invention provides a solder for nickel based superalloy soldering. The solder includes 11 wt % to 13 wt % chromium, 5.0 wt % to 7.0 wt % aluminum, 3.5 wt % to 5.0 wt % molybdenum, 1.5 wt % to 2.5 wt % niobium, 0.4 wt % to 1.0 wt % titanium, 0.03 wt % to 0.07 wt % carbon, 0.05 wt %-0.15 wt % zirconium, 0.001 wt % to 0.1 wt % boron and remainder nickel or other inevitable impurities, thereby reducing occurrence of soldering hot cracking and insufficient weld bead strength in nickel based superalloy raw materials during soldering.

公开(公告)号：US10550452B2

公开(公告)日：2020-02-04

申请号：US15633989

申请日：2017-06-27

Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Chien-Hung Liao ,  Hui-Yun Bor ,  Cuo-Yo Nieh ,  Chao-Nan Wei ,  Sz-Hen Chen ,  Po-Han Chu

IPC: C22C19/05 ,  C22C1/02 ,  C22F1/10 ,  C22F1/02 ,  C22F1/00 ,  B22D18/06

Abstract: A high creep-resistant equiaxed grain nickel-based superalloy. The high creep-resistant equiaxed grain nickel-based superalloy is characterized that the chemical compositions in weight ratios include Cr in 8.0 to 9.5 wt %, W in 9.5 to 10.5 wt %, Co in 9.5 to 10.5 wt %, Al in 5.0 to 6.0 wt %, Ti in 0.5 to 1.5 wt %, Mo in 0.5 to 1.0 wt %, Ta in 2.5 to 4.0 wt %, Hf in 1.0 to 2.0 wt %, Ir in 2.0 to 4.0 wt %, C in 0.1 to 0.2 wt %, B in 0.01 to 0.1 wt %, Zr in 0.01 to 0.10 wt %, and the remaining part formed by Ni and inevitable impurities.

公开(公告)号：US10906099B2

公开(公告)日：2021-02-02

申请号：US16104151

申请日：2018-08-17

Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Mau-Sheng Chiou ,  Chien-Hung Liao ,  Chao-Nan Wei ,  Hui-Yun Bor ,  Kuan-Zong Fung

IPC: B22F3/10 ,  B22F9/04 ,  B22F1/00 ,  C23C16/00 ,  C22C1/04

Abstract: A preparation method of high purity and densified tungsten-titanium metal which mixes titanium metal powder and tungsten metal powder together; adds metallic nitrates (such as nickel nitrate) as combustion improvers; then taking into the account of the characteristics of metal nitrate, which is soluble in alcohols to form a liquidous precursor, adds metal powder to mix together thoroughly, so that the sintering agent is expected to be colloid and uniformly spread among the tungsten-titanium metal powder. The preparation method significantly reduces the ratio of the combustion improver during the preparation of the high purity and densified tungsten-titanium target material.