The sintering mechanism and microstructure evolution in sic-ain ceramics studied by eftem
文献类型：期刊论文
| 作者 | Huang, R; Gu, H; Chen, ZM; Shouhong, TH; Jiang, DL |
| 刊名 | International journal of materials research
 |
| 出版日期 | 2006-05-01 |
| 卷号 | 97期号:5页码:614-620 |
| 关键词 | Silicon carbides Core/rim structure Liquid-phase sintering Microstructure Energy-filtered transmission Electron microscopy (eftem) |
| ISSN号 | 1862-5282 |
| 通讯作者 | Gu, h() |
| 英文摘要 | The microstructures of three hot-pressed sic ceramic materials with 5 vol.%, 10 vol.%, and 15 vol.% aln were investigated by analytical electron microscopy, especially electron energy-loss spectroscopic mapping (eels mapping). aln additives dissolve into sic to form a core/rim structure and to refine the sic grains. the crystallographic configurations for cores revealed by eels mapping elucidate the sintering mechanism as liquid-phase sintering in the sic-aln composites. the additional 0.5 wt.% y2o3 additives that distribute in the intergranular regions facilitate the formation of liquids to improve the sintering property. with the increase of aln, the microstructure evolution experienced three stages characterized as solid solution with core/rim structure for a few elongated grains, core/rim for the general equiaxed grains, and the emergence of individual aln grains with sic-rich precipitations, respectively. the refined grains and a variety of microstructures contribute to an excellent combination of mechanical properties, with the flexural strength as high as 1000 mpa while the fracture toughness remains moderately high. |
| WOS关键词 | ALUMINUM NITRIDE COMPOSITIONS ; TOUGHENED SILICON-CARBIDE ; ALN PARTICULATE COMPOSITE ; SOLID-SOLUTIONS ; PROPERTY RELATIONS ; PHASE-SEPARATION ; TOUGHNESS ; SYSTEM ; STABILITY ; ADDITIONS |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| WOS类目 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000238661400018 |
| 出版者 | CARL HANSER VERLAG |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2378465 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Gu, H |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China 2.Chinese Acad Sci, Grad Sch, Shanghai 200050, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, R,Gu, H,Chen, ZM,et al. The sintering mechanism and microstructure evolution in sic-ain ceramics studied by eftem[J]. International journal of materials research,2006,97(5):614-620. |
| APA | Huang, R,Gu, H,Chen, ZM,Shouhong, TH,&Jiang, DL.(2006).The sintering mechanism and microstructure evolution in sic-ain ceramics studied by eftem.International journal of materials research,97(5),614-620. |
| MLA | Huang, R,et al."The sintering mechanism and microstructure evolution in sic-ain ceramics studied by eftem".International journal of materials research 97.5(2006):614-620. |
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来源：中国科学院大学
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