2012 Fiscal Year Final Research Report
Development of Novel Cemented Carbide for Overcoming Rare Metal Crisis by Preparing Nano-Meso Structure-Controlled Tungsten Carbide
| Project/Area Number |
21560751
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Material processing/treatments
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| Research Institution | University of Hyogo |
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Principal Investigator |
MORISHITA Masao 兵庫県立大学, 大学院・工学研究科, 教授 (60244696)
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| Co-Investigator(Kenkyū-buntansha) |
YAMAMOTO Hiroaki 兵庫県立大学, 大学院・工学研究科, 准教授 (40326301)
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| Project Period (FY) |
2009 – 2012
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| Keywords | 粉末プロセス / 粉末冶金 |
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| Research Abstract |
The WC involving the nano metal cobalt domains has been prepared by a gas-solid reaction between the cobalt non-equilibrium super saturated-tugsten powder and carbon mono-oxide gas (CO). The metal Co domains formed in the WC were found to be spherical with a diameter of approximately 60 nm by observing the microstructure with a high resolution transmission electron microscope. The tungsten less-hard metal prepared from the WC involving the nano metal cobalt domains shows high performance, resulted from its nano-scaled fine structure. Recyle of W and Co from the present hard metal is advantageous due to that it is composed of only WC and Co.
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