減圧プラズマ溶射したＣｏＮｉＣｒＡｌＹＴａ皮膜の微細構造に及ぼす熱処理の影響

• 野口 邦広

  熊本大学大学院

• 西田 稔

  熊本大学工学部

• 千葉 昂

  熊本大学工学部

• 原田 良夫

  トーカロ (株) 溶射技術開発研究所

書誌事項

タイトル別名

• Effect of the Heat Treatments to Microstructures of Low Pressure Plasma Sprayed CoNiCrAlYTa Coating.
• ゲンアツ プラズマ ヨウシャシタ CoNiCrAlYTa ヒマク ノ ビサイ

抄録

In this study, transmission electron microscopy (TEM) was used to characterize the microstructures of as-sprayed, solution-treated, aged CoNiCrAlYTa coatings. The micro-vickers hardness test was used to estimate age hardening of the coatings. The hardness of as-sprayed coatings was about 590Hv. Hardness was decreased to about 560Hv in solution treatment at 1373K for 4 hours. It was increased, however, by aging at 1073K and 1173K after solution treatment.<br>TEM observation showed that the average grain size was about 0.5μm. The γ and β-phases coexisted in as-sprayed coatings. Solution treatment at 1373K coarsened the grain size to about 1.5μm. Wedge-shaped β precipitates in the γ-phase were produced by aging. Needle-shaped α-Co and massive σ precipitates in β phase were clearly produced by aging. These precipitations are therefore thought to contribute to age hardening.

収録刊行物

• 表面技術

  表面技術 47 (9), 784-789, 1996

  一般社団法人 表面技術協会

キーワード

• LPPS
• CoNiCrAlYTa
• Aging
• γ phase
• β phase
• Needle-shaped α-Co
• Massive σ

詳細情報

• CRID: 1390282679091464320
• NII論文ID: 10002257169
• NII書誌ID: AN1005202X
• DOI: 10.4139/sfj.47.784
• ISSN: 18843409
• ISSN: 09151869
• NDL書誌ID: 4028868
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4028868
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可