The Effect of Nitrogen Pressure on Structure and Molten Aluminum Resistance of Arc-ion Plated Cr-N Coatings on Ti-6Al-4V.
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- YAMAMOTO Kenji
- Materials Res. Lab, Kobe Steel Ltd.
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- YUSE Fumio
- Materials Res. Lab, Kobe Steel Ltd.
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- NAKAYAMA Takenori
- Materials Res. Lab, Kobe Steel Ltd.
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- KAMIKUBO Fumio
- Materials Res. Lab, Kobe Steel Ltd.
Bibliographic Information
- Other Title
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- AIP法によりTi‐6Al‐4V基板上に形成したCr‐N膜の構造および耐溶融Al性に与える成膜時の窒素圧の影響
- AIPホウ ニ ヨリ Ti 6Al 4V キバンジョウ ニ ケイセイシタ Cr
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Abstract
A series of chromium nitride coatings with different nitrogen contents were deposited on Ti-6Al-4V substrate by the arc ion plating method using a Cr target and nitrogen as the reactive gas. At nitrogen pressures below 027Pa, the deposited coatings contained 20 to 27 at% nitrogen and mainly consisted of the Cr2N phase. Above this pressure, coatings contained more than 35 at% nitrogen and consisted of the CrN single phase. The dissolution rate of the Cr-N coating in pure molten aluminum was drastically decreased above a nitrogen content of about 35 at%, which corresponds to the transition point from Cr2N to CrN. In TEM observation, it was found that a thin (∼50nm) reactive layer confirmed to be as wruzite type AlN formed in the interface between the CrN and Al after Al immersion. It was concluded that this AlN acts as a protective layer for the molten aluminum. In heat cycle testing, formation of heat cracks was significantly suppressed when deposited on Ti-6Al-4V in comparison to deposition on conventional tool steel. This behavior agrees with the results of thermal stress calculations for both substrates.
Journal
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- Journal of The Surface Finishing Society of Japan
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Journal of The Surface Finishing Society of Japan 48 (4), 446-453, 1997
The Surface Finishing Society of Japan
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Details 詳細情報について
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- CRID
- 1390001204114474240
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- NII Article ID
- 10002258922
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- NII Book ID
- AN1005202X
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- COI
- 1:CAS:528:DyaK2sXisl2ht7g%3D
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- ISSN
- 18843409
- 09151869
- http://id.crossref.org/issn/09151869
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- NDL BIB ID
- 4184939
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed