Crystal structure and carbon vacancy hardening of (w0.5al0.5)c1-x prepared by a solid-state reaction
文献类型：期刊论文
| 作者 | Yan, JM; Ma, XF; Zhao, W; Tang, HG; Zhu, CJ; Cai, SG |
| 刊名 | Chemphyschem
 |
| 出版日期 | 2005-10-14 |
| 卷号 | 6期号:10页码:2099-2103 |
| 关键词 | Crystal growth Density functional calculations Solid-state reactions Vacancy hardening |
| ISSN号 | 1439-4235 |
| DOI | 10.1002/cphc.200500143 |
| 通讯作者 | Ma, xf() |
| 英文摘要 | Novel solid solutions of aluminum in tungsten carbide (wc) with or without carbon vacancies, which can be expressed by the chemical formula (w0.5al0.5)c1-x (x = 0.0-0.5), have been synthesized by the solid-state reaction of w0.5al0.5 alloy and the proper amount of carbon at around 7673 k in vacuum. the reaction time decreases from 73 to 50 h on increasing the carbon vacancy concentration from 0 to 50%, the formation of the intended products is certified, by x-ray diffraction, environmental scanning electron microscopy-energy-dispersive x-ray analysis, and inductively coupled plasma-atomic emission spectroscopy, even though the carbon vacancy concentration reaches the astonishing value of 50%. the as-prepared (w0.5al0.5)c1-x samples hove been identified as the hexagonal wc-type structure belonging to the space group p6m2 (z=1). moreover, the crystallographic results reveal that the substituting aluminum atoms in the wc are located in the 1a site (the w atom position of the wc structure) and the cell parameters decrease slightly with increasing vacancy concentration. the hardness of the (w0.5al0.5)c1-x system increases up to a maximum 2659 kg mm(-2) at a carbon vacancy concentration of about 35%, and the density of (w0.5al0.5)c1-x is for lower than that of wc. |
| WOS关键词 | MECHANICAL-PROPERTIES ; CEMENTED CARBIDES ; WC ; HARDMETALS ; TUNGSTEN ; FE ; CO |
| WOS研究方向 | Chemistry ; Physics |
| WOS类目 | Chemistry, Physical ; Physics, Atomic, Molecular & Chemical |
| 语种 | 英语 |
| WOS记录号 | WOS:000232725900016 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2378274 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Ma, XF |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, Lab Mat & Devices, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Grad Sch, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan, JM,Ma, XF,Zhao, W,et al. Crystal structure and carbon vacancy hardening of (w0.5al0.5)c1-x prepared by a solid-state reaction[J]. Chemphyschem,2005,6(10):2099-2103. |
| APA | Yan, JM,Ma, XF,Zhao, W,Tang, HG,Zhu, CJ,&Cai, SG.(2005).Crystal structure and carbon vacancy hardening of (w0.5al0.5)c1-x prepared by a solid-state reaction.Chemphyschem,6(10),2099-2103. |
| MLA | Yan, JM,et al."Crystal structure and carbon vacancy hardening of (w0.5al0.5)c1-x prepared by a solid-state reaction".Chemphyschem 6.10(2005):2099-2103. |
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来源：中国科学院大学
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