• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of the manufacturing process of Nb-Al intermetallic compound by Pseudo-HIP/SHS processed PREP electrode

Research Project

Project/Area Number 07555532
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section試験
Research Field Material processing/treatments
Research InstitutionRitsumeikan University

Principal Investigator

AMEYAMA Kei (1996)  Ritsumeikan University, Department of Mechanical engineering, Prof., 理工学部, 教授 (10184243)

時實 正治 (1995)  立命館大学, 理工学部, 教授 (50066528)

Co-Investigator(Kenkyū-buntansha) ISONISHI Kazuo  Shiga University, Associate Professor, 教育学部, 助教授 (50223061)
KUMAGAE Ryohei  Fukuda Powder & Foil Co.
熊谷 良平  福田金属箔粉工業(株), 技術本部
飴山 恵  立命館大学, 理工学部, 助教授 (10184243)
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1996: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsIntermetallic compound / Niobium aluminido / Nb / Al / mechanical alloying / PREP / Pseudo-HIP / SHS / Nb-18at%Al合金 / PREP用電極 / CIP / 疑似HIP / PREP / (Nb固溶体+Nb_3Al) / 真球状球形粉末 / ボールミル混合
Research Abstract

The current technology for both gas turbines and aero engine turbines relies haevily on the niclkel-base superalloys for construction materials in the high temperature regions. These alloys are generally limited to working temperatures below 1150C,although the use of coatings and cooling systems permits turbine inlet temperatures above the melting point of nickel itself (1453C). Although there is a general advantage in using higher temperatures in the engine operation, and the search for such systems is ongoing, ths requirements of reliability, cost and emission control impose some quite severe limits on practical progress. In conventional air-breathing engines the turbine inlet temperature is theoretically limited by the adiabatic stoichiometric combustion temperature, in the range of 1800 to 2100C depending on the fuel used. In practice, however, even the present sophisticated combustor designs are likely to be limited to an inlet temperature of around 1650C because of the requirement to control NOX emissions. This limit then sets the goal for the use-temperature of un-cooled components in the high temperature region.
Therefore, this study is focused to develop Nb-Al intermetallic compounds by a novel Powder Metallurgy (PM) processing. The PM process we applied is Pseudo-HIP/SHS Plasma Rotating Electrode Process (PREP) combined with or without Mechanical Alloying (MA) process and. The results are as follows.
(1) The electrode produced by a P-HIP/SHS process showed coarse microstructure consisted of Nb solid solution (as) and Nb_2Al phases. Annealing of the electrode at 1873K for 36ks resulted in homogeneous microstructure. The P-HIP/SHS process with a mechanical alloying proceeing showed very fine and homogeneous Nb ss+Nb_3Al microstructure.
(2) The PREP powders made from above three kinds of electrode showed a fine microstructure. The Nb-Al PREP powders were successfully produced by the Pseudo-HIP/SHS Plasma Rotating Electrode Process.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (1 results)

All Other

All Publications (1 results)

  • [Publications] 磯西和夫.飴山恵.時實正治 他3名: "疑似HIP-SHS電極のPREPによるNb-Al金属間化合物製造プロセスの確立" 粉体粉末冶金協会平成8年秋期講演大会. (発表予定).

    • Related Report
      1995 Annual Research Report

URL: 

Published: 1996-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi