2012 Fiscal Year Final Research Report
Crystal structure change in CrN by atom substitution; Factor elucidation and preparation of new super hard material
| Project/Area Number |
22686069
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Material processing/treatments
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| Research Institution | Nagaoka University of Technology |
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Principal Investigator |
SUZUKI Tsuneo 長岡技術科学大学, 工学研究科, 助教 (00313560)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 硬質薄膜 / パルスレーザー堆積法 / 遷移金属窒化物 |
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| Research Abstract |
Hardening of coated thin films on cutting tools can increase an efficiency of cutting process. We have developed new material. The new material Cr(N,0), where O atoms are substituted for N atoms in CrN lattice, showed high hardness and superior oxidation resistance. It was found that the crystal structure kept NaC1 type in spite of O atom substitution, since vacancies in Cr site were introduced with increasing oxygen content. Also, Cr(N,0) thin films with large crystalline size were successfully prepared on MgO single crystal substrate. These thin films revealed the oxygen substitution clear, and cause of high oxidation resistance.
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