Corrosion of CrN-Coated Steels in Liquid Pb-Bi

• Kurata Yuji

  Japan Atomic Energy Agency

• Futakawa Masatoshi

  Japan Atomic Energy Agency

抄録

Corrosion tests of CrN-coated steels were conducted in liquid lead-bismuth (Pb-Bi) at 450°C and 550°C for 3000 h to investigate the applicability of CrN coating to a liquid Pb-Bi environment. CrN coatings on F82H (Fe-8Cr-2W-0.3V-0.04Ta-0.1C) and 316SS exhibited good compatibility in liquid Pb-Bi during corrosion test at 450°C. The CrN coating layer suffered heavy damage such as cracking and spalling, and showed no effectiveness as a protective layer in corrosion test at 550°C. Nickel and chromium in 316SS dissolved into Pb-Bi through the damaged coating layer at 550°C. It is considered that stresses caused by the difference of thermal expansion coefficients between CrN and steels led to cracking and spalling of the CrN coating through corrosion attack by liquid Pb-Bi at 550°C.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 48 (3), 519-525, 2007

  公益社団法人 日本金属学会

キーワード

• CrN coating
• lead-bismuth
• corrosion
• compatibility
• cracking
• dissolution

詳細情報

• CRID: 1390001204251352064
• NII論文ID: 130004453497
• NII論文ID: 10018735040
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.48.519
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 8671149
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8671149
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/48/3/48_MBW200607/_pdf
• 本文言語コード: en
• データソース種別:
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  • NDL
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