超微粒子噴射積層法および温度傾斜付加焼結法によるTi-Al_2O_3傾斜機能材料の試作 Fabrication of a Ti-Al_2O_3 Functionally Graded Material by Dry-jet Spraying of Ultrafine Particles and Subsequent Temperature-gradient Sintering

この論文にアクセスする

この論文をさがす

著者

抄録

Ti-Al<SUB>2</SUB>O<SUB>3</SUB> functionally graded material (FGM) is tentatively fabricated by dry jet spraying of ultrafine particles (UFPs) onto a Ti substrate and subsequent temperature-gradient sintering. The FGM layer is formed by gradually decreasing the ratio, r=Ti/(Ti+Al<SUB>2</SUB>O<SUB>3</SUB>), during the dry-jet spraying. It is found to be effective to add Ti-or Zr-hydrides to the Ti substrate to decrease the number of cracks which appear in the FGM layer due to the difference in the amounts of shrinkage during sintering. Since the composition range between r=1 and r=0.5 is known to show large shrinkage, it is better to start the dry-jet spraying from r=0.5 than to start from r=1 to decrease the size of voids. Despite the existence of the skipped r range, the r in the sintered composite changes from r=1 to r=0, which is considered to be due to the abnormally rapid diffusion of Ti atoms. The fabrication of an FGM in the shape of a cylinder with locally different diameters is also tried and it is found that by adjusting the pressure of isostatic pressing of the dry jet sprayed composite the formation of cracks in the neighborhood of the protrusions is suppressed.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 44(4), 334-339, 1997-04-15 

    Japan Society of Powder and Powder Metallurgy

参考文献:  5件

参考文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

被引用文献:  2件

被引用文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

各種コード

  • NII論文ID(NAID)
    10002261336
  • NII書誌ID(NCID)
    AN00222724
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    05328799
  • NDL 記事登録ID
    4194320
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-274
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
ページトップへ