{"id":199598,"date":"2020-04-09T06:28:19","date_gmt":"2020-04-08T22:28:19","guid":{"rendered":"\/\/m.iemloyee.com\/?p=199598"},"modified":"2020-04-08T20:28:53","modified_gmt":"2020-04-08T12:28:53","slug":"%e4%b8%ad%e5%8d%97%e5%a4%a7%e5%ad%a6-j-am-ceram-soc%ef%bc%9a%e9%ab%98%e5%bc%ba%e9%ab%98%e9%9f%a7%e5%8d%8a%e9%80%8f%e6%98%8ezro2-sio2%e7%ba%b3%e7%b1%b3%e7%8e%bb%e7%92%83%e9%99%b6%e7%93%b7%e4%b8%ad","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=199598","title":{"rendered":"\u4e2d\u5357\u5927\u5b66 J Am Ceram Soc\uff1a\u9ad8\u5f3a\u9ad8\u97e7\u534a\u900f\u660eZrO2-SiO2\u7eb3\u7c73\u73bb\u7483\u9676\u74f7\u4e2d\u7684\u754c\u9762\u504f\u6790\u7814\u7a76"},"content":{"rendered":"

\u3010\u7814\u7a76\u80cc\u666f\u3011<\/strong><\/p>\n

\u73bb\u7483\u9676\u74f7\uff08\u53c8\u79f0\u5fae\u6676\u73bb\u7483\uff09\u56e0\u4e3a\u7efc\u5408\u4e86\u73bb\u7483\u548c\u9676\u74f7\u5404\u9879\u4f18\u5f02\u7269\u5316\u6027\u80fd\u800c\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e\u56fd\u6c11\u7ecf\u6d4e\u7684\u5404\u4e2a\u91cd\u8981\u9886\u57df\uff0c\u4e3b\u8981\u5305\u62ec\u519b\u5de5\u3001\u5149\u5b66\u3001\u7535\u5b50\u4e0e\u5fae\u7535\u5b50\u3001\u751f\u7269\u533b\u5b66\u3001\u9910\u53a8\u3001\u5efa\u7b51\u7b49\u9886\u57df\u3002\u5fae\u89c2\u754c\u9762\uff08\u6676\u754c\u548c\u76f8\u754c\uff09\u4f5c\u4e3a\u591a\u6676\u6750\u6599\u7684\u91cd\u8981\u5fae\u89c2\u7ed3\u6784\u7ec4\u6210\u90e8\u5206\u5f71\u54cd\u751a\u81f3\u51b3\u5b9a\u4e86\u6750\u6599\u7684\u591a\u65b9\u9762\u5b8f\u89c2\u6027\u80fd\uff0c\u8fd9\u79cd\u754c\u9762\u6548\u5e94\u5728\u7eb3\u7c73\u6750\u6599\u4e2d\u5c24\u4e3a\u660e\u663e\u548c\u91cd\u8981\uff0c\u56e0\u4e3a\u968f\u7740\u6676\u7c92\u5c3a\u5bf8\u7684\u964d\u4f4e\uff0c\u754c\u9762\u5728\u6750\u6599\u5fae\u89c2\u7ed3\u6784\u6240\u5360\u7684\u4f53\u79ef\u5206\u6570\u9010\u6e10\u589e\u5927\u3002\u63ba\u6742\u5143\u7d20\u754c\u9762\u504f\u6790\u5bf9\u73bb\u7483\u9676\u74f7\u7684\u5fae\u89c2\u7ed3\u6784\u548c\u7535\u3001\u78c1\u3001\u5149\u3001\u70ed\u3001\u529b\u7b49\u5404\u79cd\u5b8f\u89c2\u7269\u5316\u6027\u80fd\u6709\u7740\u91cd\u8981\u5f71\u54cd\uff0c\u56e0\u6b64\u4e5f\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e\u8c03\u63a7\u73bb\u7483\u9676\u74f7\u7684\u5fae\u89c2\u7ed3\u6784\u548c\u5b8f\u89c2\u6027\u80fd\u3002\u4f46\u662f\u76ee\u524d\u5728\u73bb\u7483\u9676\u74f7\u9886\u57df\u5185\u5173\u4e8e\u63ba\u6742\u5143\u7d20\u754c\u9762\u504f\u6790\u7684\u7814\u7a76\u548c\u62a5\u9053\u975e\u5e38\u6709\u9650\uff0c\u5bf9\u754c\u9762\u504f\u6790\u673a\u5236\u7684\u7814\u7a76\u4e0d\u591f\u7cfb\u7edf\u548c\u6df1\u5165\u3002<\/p>\n

\u3010\u5de5\u4f5c\u7b80\u4ecb\u3011<\/strong><\/p>\n

\u9488\u5bf9\u4ee5\u4e0a\u95ee\u9898\uff0c\u4e2d\u5357\u5927\u5b66\u9752\u5e74\u6559\u5e08\u5085\u4e50\u535a\u58eb\u4e0e\u745e\u5178\u4e4c\u666e\u8428\u62c9\u5927\u5b66\u590f\u709c\u526f\u6559\u6388\u548cH\u00e5kan Engqvist\u6559\u6388\u5408\u4f5c\uff0c\u5728\u524d\u671f\u5f00\u53d1\u7684\u9ad8\u5f3a\u9ad8\u97e7\u534a\u900f\u660eZrO2<\/sub>-SiO2<\/sub>\u7eb3\u7c73\u73bb\u7483\u9676\u74f7\u4e2d\u6dfb\u52a0\u5fae\u91cfY\u5143\u7d20\uff0c\u91c7\u7528\u5148\u8fdb\u900f\u5c04\u7535\u955c\u6280\u672f\uff08\u4e3b\u8981\u662fSTEM-EDS\uff09\u8868\u5f81\u4e86Y\u5143\u7d20\u5728ZrO2<\/sub>\/ZrO2<\/sub>\u6676\u754c\u3001ZrO2<\/sub>\/SiO2<\/sub>\u76f8\u754c\u548c\u975e\u6676SiO2<\/sub>\u7684\u504f\u6790\u548c\u5206\u5e03\u60c5\u51b5\uff0c\u53d1\u73b0Y\u5143\u7d20\u4e0d\u4ec5\u504f\u6790\u4e8eZrO2<\/sub>\/ZrO2<\/sub>\u6676\u754c\uff0c\u540c\u65f6\u4e5f\u504f\u6790\u4e8eZrO2<\/sub>\/SiO2<\/sub>\u76f8\u754c\uff0c\u4f7f\u5f97ZrO2<\/sub>\u7eb3\u7c73\u7c92\u5b50\u5916\u5c42\u5f62\u6210\u6838-\u58f3\u7ed3\u6784\uff0c\u4f46\u662fY\u5143\u7d20\u6ca1\u6709\u5206\u5e03\u4e8e\u975e\u6676SiO2<\/sub>\u57fa\u8d28\u3002DFT\u6a21\u62df\u8ba1\u7b97\u7ed3\u679c\u8868\u660eY\u5143\u7d20\u5728ZrO2<\/sub>\/ZrO2<\/sub>\u6676\u754c\u6709\u5f3a\u70c8\u7684\u504f\u6790\u8d8b\u52bf\uff0cY\u5143\u7d20\u7684\u504f\u6790\u660e\u663e\u589e\u52a0\u4e86\u6676\u754c\u7684\u5206\u79bb\u529f\u3002\u8fd1\u65e5\uff0c\u76f8\u5173\u5de5\u4f5c\u4ee5\u201cObservation of yttrium oxide segregation in a ZrO2<\/sub>-SiO2<\/sub> glass-ceramic at nanometer dimensions\u201d\u4e3a\u9898\u5728\u7ebf\u53d1\u8868\u4e8e\u56fd\u9645\u8457\u540d\u9676\u74f7\u7c7b\u6742\u5fd7Journal of the American Ceramic Society\u4e0a\u3002\u8be5\u5de5\u4f5c\u4e3a\u63ba\u6742\u5143\u7d20\u5728\u7eb3\u7c73\u73bb\u7483\u9676\u74f7\u5fae\u89c2\u754c\u9762\u7684\u504f\u6790\u63d0\u4f9b\u4e86\u65b0\u7684\u8ba4\u8bc6\uff0c\u540c\u65f6\u4e5f\u4e3a\u901a\u8fc7\u63ba\u6742\u5143\u7d20\u754c\u9762\u504f\u6790\u8bbe\u8ba1\u548c\u7cbe\u786e\u8c03\u63a7\u65b0\u578b\u73bb\u7483\u9676\u74f7\u63d0\u4f9b\u501f\u9274\u3002<\/p>\n

\u3010\u7814\u7a76\u5185\u5bb9\u3011<\/strong><\/p>\n

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Fig.1 STEM images and STEM-EDS maps of the Y doped 65%molZrO2<\/sub>-35%molSiO2 <\/sub>nanocrystalline glass-ceramic (NCGC). (a) STEM-BF image showing an overview of the microstructure of the NCGC. Inset: The size distribution histogram of the ZrO2<\/sub> nanoparticles (NPs). (b) STEM-HAADF image of ZrO2<\/sub> NP. (c-f) STEM-EDS maps demonstrating the distribution of Zr, Si, O, and Y, respectively, within the region marked with green rectangle in (n).\u00a0<\/p>\n

\u8be5ZrO2<\/sub>-SiO2<\/sub>\u7eb3\u7c73\u73bb\u7483\u9676\u74f7\u7684\u5fae\u89c2\u7ed3\u6784\u4e3a\u692d\u7403\u5f62ZrO2<\/sub>\u7eb3\u7c73\u7c92\u5b50\uff0847.6\u00b110.2 nm\uff09\u57cb\u8986\u5728\u975e\u6676SiO2<\/sub>\u57fa\u8d28\u4e2d\uff08Fig. 1a and 1b\uff09\u3002\u5728\u8be5\u73bb\u7483\u9676\u74f7\u4e2d\u5b58\u5728\u4e24\u79cd\u754c\u9762\uff1aZrO2<\/sub>\u7eb3\u7c73\u7c92\u5b50\u4e4b\u95f4\u7684\u6676\u754c\uff08ZrO2<\/sub>\/ZrO2<\/sub>\u6676\u754c\uff09\u548cZrO2<\/sub>\u7eb3\u7c73\u7c92\u5b50\u4e0e\u975e\u6676SiO2<\/sub>\u57fa\u8d28\u4e4b\u95f4\u7684\u76f8\u754c\uff08ZrO2<\/sub>\/SiO2<\/sub>\u76f8\u754c\uff09\u3002\u5fae\u91cf\u6dfb\u52a0\u7684Y\u5143\u7d20\u4e0d\u4ec5\u504f\u6790\u4e8eZrO2<\/sub>\/ZrO2<\/sub>\u6676\u754c\uff0c\u540c\u65f6\u4e5f\u504f\u6790\u4e8eZrO2<\/sub>\/SiO2<\/sub>\u76f8\u754c\uff08Fig. 1f\uff09\u3002\u53e6\u5916\u8fd8\u6709\u90e8\u5206Y\u5143\u7d20\u8fdb\u5165\u5230ZrO2<\/sub>\u7eb3\u7c73\u7c92\u5b50\u6676\u683c\uff0c\u8d77\u5230\u7a33\u5b9a\u56db\u65b9\u76f8ZrO2<\/sub>\u7eb3\u7c73\u7c92\u5b50\u7684\u4f5c\u7528\uff0c\u6709\u8da3\u7684\u662fY\u5143\u7d20\u5e76\u6ca1\u6709\u5206\u5e03\u4e8e\u7ed3\u6784\u6df7\u4e71\u7684\u975e\u6676SiO2<\/sub>\u57fa\u8d28\u4e2d\u3002Y\u5143\u7d20\u5728ZrO2<\/sub>\/SiO2<\/sub>\u76f8\u754c\u7684\u504f\u6790\uff0c\u4e5f\u5373\u5728ZrO2<\/sub>\u7eb3\u7c73\u7c92\u5b50\u8868\u9762\u4e0a\u7684\u504f\u6790\uff0c\u4f7f\u5f97ZrO2<\/sub>\u7eb3\u7c73\u7c92\u5b50\u5177\u6709\u4e00\u5b9a\u7684\u6838-\u58f3\u7ed3\u6784\uff08Fig.2\uff09\u3002<\/p>\n

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Fig.2 Schematic graph showing segregation of Y elements on ZrO2<\/sub> NPs, resulting in the formation of core-shell structure.<\/p>\n

STEM-HAADF\u7ed3\u679c\uff08Fig.3\uff09\u8868\u660e\u5728ZrO2<\/sub>\/ZrO2<\/sub>\u6676\u754c\u4e0a\u5b58\u5728\u4e00\u5c42\u539a\u5ea6\u7ea6\u4e3a7 \u00c5\u7684\u975e\u6676\u754c\u9762\u5c42\u3002\u975e\u6676\u754c\u9762\u5c42\u7684\u539a\u5ea6\u53d6\u51b3\u4e8e\u76f8\u4e92\u7ade\u4e89\u7684\u4e24\u65b9\u9762\u56e0\u7d20\uff1a\u4e00\u4e2a\u662f\u754c\u9762\u5c42\u4e24\u4fa7\u7eb3\u7c73\u7c92\u5b50\u4e4b\u95f4\u7684\u8303\u5fb7\u74e6\u5c14\u65af\u5438\u5f15\u529b\uff0c\u53e6\u4e00\u4e2a\u662f\u975e\u6676\u754c\u9762\u5c42\u672c\u8eab\u5e94\u5bf9\u7eb3\u7c73\u7c92\u5b50\u6324\u538b\u7684\u5411\u5916\u5f20\u529b\u3002\u901a\u8fc7\u5bf9\u6b64\u975e\u6676\u754c\u9762\u5c42\u8fdb\u884cSTEM-EDS\u5206\u6790\u518d\u6b21\u8bc1\u5b9eY\u5143\u7d20\u5bcc\u96c6\u4e8e7 \u00c5\u539a\u7684\u975e\u6676\u754c\u9762\u5c42\u4e2d\uff08Fig.4\uff09\u3002\u540c\u65f6\u5728\u975e\u6676\u754c\u9762\u5c42\u8fd8\u53d1\u73b0\u4e86Si\u5143\u7d20\u7684\u4fe1\u53f7\uff0c\u4f46\u662f\u7531\u4e8e\u6b64\u73bb\u7483\u9676\u74f7\u4e2dSiO2<\/sub>\u76f8\u4f5c\u4e3a\u57fa\u8d28\u800c\u5927\u91cf\u5b58\u5728\uff0c\u56e0\u6b64\u65e0\u6cd5\u76f4\u63a5\u6839\u636eSTEM-EDS\u5224\u5b9aSi\u662f\u5426\u4e5f\u504f\u6790\u4e8e\u975e\u6676\u754c\u9762\u5c42\u4e2d\u3002<\/p>\n

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Fig.3 A STEM-HAADF image showing the grain boundary between ZrO2<\/sub> NPs with a thin layer of intergranular glass film (IGF). The thickness of the IGF was approximately 7 \u00c5 (inset).<\/p>\n

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Fig.4 STEM-EDS analysis of an IGF. (a) STEM-HAADF image showing two adjacent ZrO2<\/sub> NPs (brighter contrast) and the IGF (darker contrast); (b) Zr element STEM-EDS map; (c) Si element STEM-EDS map; (d) Y element STEM-EDS map; (E) O element STEM-EDS map.<\/p>\n

DFT\u6a21\u62df\u8ba1\u7b97\u7ed3\u679c\u8868\u660e\u76f8\u8f83\u4e8e\u672a\u63ba\u6742\u7684ZrO2<\/sub>\/ZrO2<\/sub>\u6676\u754c\uff08Fig.5\uff09\uff0cY\u5143\u7d20\u5728\u6676\u754c\u7684\u504f\u6790\u964d\u4f4e\u4e86\u7cfb\u7edf\u80fd\u91cf\uff0c\u56e0\u6b64\u4ece\u70ed\u529b\u5b66\u89d2\u5ea6\u6765\u8bf4Y\u5143\u7d20\u5728\u6676\u754c\u4e0a\u5177\u6709\u5f3a\u70c8\u7684\u504f\u6790\u9a71\u52a8\u529b\uff1b\u53e6\u5916\uff0cY\u5143\u7d20\u7684\u504f\u6790\u660e\u663e\u589e\u52a0\u4e86ZrO2<\/sub>\/ZrO2<\/sub>\u6676\u754c\u7684\u5206\u79bb\u529f\u3002\u8fd9\u6709\u53ef\u80fd\u5f71\u54cd\u5230\u8be5ZrO2<\/sub>-SiO2<\/sub>\u7eb3\u7c73\u73bb\u7483\u9676\u74f7\u7684\u5b8f\u89c2\u529b\u5b66\u6027\u80fd\uff0c\u56e0\u4e3a\u73bb\u7483\u9676\u74f7\u53ef\u4ee5\u89c6\u4e3a\u7531\u6676\u76f8\u548c\u975e\u6676\u76f8\u590d\u5408\u800c\u6210\u7684\u590d\u5408\u6750\u6599\uff0c\u6b64\u4e24\u76f8\u4e4b\u95f4\u7684\u5fae\u89c2\u754c\u9762\u7ed3\u5408\u529b\u5c06\u76f4\u63a5\u5f71\u54cd\u5230\u8be5\u6750\u6599\u7684\u5b8f\u89c2\u529b\u5b66\u6027\u80fd\uff0c\u6b64\u95ee\u9898\u6709\u5f85\u540e\u7eed\u66f4\u6df1\u5165\u7684\u7814\u7a76\u3002\u4f5c\u8005\u8ba4\u4e3aY\u5143\u7d20\u5728ZrO2<\/sub>\u7eb3\u7c73\u7c92\u5b50\u8868\u9762\u4e0a\u7684\u504f\u6790\u53ef\u4ee5\u7528\u201c\u7a7a\u95f4\u7535\u8377\u504f\u6790\u201d\u7406\u8bba\u6765\u89e3\u91ca\uff1aZrO2<\/sub>\u7eb3\u7c73\u7c92\u5b50\u7531\u4e8e\u5185\u90e8\u7a7a\u4f4d\u548cY3+<\/sup>\u66ff\u4ee3Zr4+<\/sup>\u5269\u4f59\u7535\u8377\u7684\u5b58\u5728\u800c\u6210\u4e3a\u5e26\u7535\u7c92\u5b50\uff0c\u56e0\u6b64ZrO2<\/sub>\u7eb3\u7c73\u7c92\u5b50\u4f1a\u5728\u8868\u9762\u5438\u9644\u5c11\u91cfY3+<\/sup>\u6765\u5b9e\u73b0\u7eb3\u7c73\u7c92\u5b50\u7684\u7535\u4e2d\u6027\u3002<\/p>\n

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Fig.5 DFT calculation results. (a) Atomic structure for clean ZrO2<\/sub> GB (without segregation) and the corresponding work of separation at three atomic layer (indicated by dash lines); (b) Atomic structure for a Y atom to segregate to ZrO2<\/sub> GB and the corresponding work of separation (indicated by dash lines).<\/p>\n

\u3010\u7814\u7a76\u7ed3\u8bba\u3011<\/strong><\/p>\n

ZrO2<\/sub>-SiO2<\/sub>\u7eb3\u7c73\u73bb\u7483\u9676\u74f7\u4e2d\u5fae\u91cf\u6dfb\u52a0\u7684\u63ba\u6742Y\u5143\u7d20\u4e0d\u4ec5\u504f\u6790\u4e8eZrO2<\/sub>\u7eb3\u7c73\u7c92\u5b50\u4e4b\u95f4\u7684\u539a\u7ea67 \u00c5\u7684\u975e\u6676\u754c\u9762\u5c42\u4e2d\uff0c\u540c\u65f6\u4e5f\u504f\u6790\u4e8eZrO2<\/sub>\u7eb3\u7c73\u7c92\u5b50\u4e0e\u975e\u6676SiO2<\/sub>\u57fa\u8d28\u4e4b\u95f4\u7684\u76f8\u754c\uff1b\u53e6\u5916\u8fd8\u6709\u90e8\u5206\u8fdb\u5165ZrO2<\/sub>\u7eb3\u7c73\u7c92\u5b50\u53d6\u4ee3Zr\u5143\u7d20\uff0c\u8d77\u5230\u7a33\u5b9a\u56db\u65b9\u76f8ZrO2<\/sub>\u7684\u4f5c\u7528\uff0c\u4f46\u662fY\u5143\u7d20\u5e76\u6ca1\u6709\u5206\u5e03\u4e8e\u7ed3\u6784\u6df7\u4e71\u7684\u975e\u6676SiO2<\/sub>\u57fa\u8d28\u4e2d\u3002Y\u5143\u7d20\u5728\u6676\u754c\u7684\u504f\u6790\u589e\u52a0\u4e86\u754c\u9762\u5206\u79bb\u529f\uff0c\u964d\u4f4e\u4e86\u7cfb\u7edf\u80fd\u91cf\u3002Y\u5143\u7d20\u5728ZrO2<\/sub>\u7eb3\u7c73\u7c92\u5b50\u8868\u9762\u7684\u504f\u6790\u53ef\u7531\u201c\u7a7a\u95f4\u7535\u8377\u504f\u6790\u201d\u7406\u8bba\u6765\u89e3\u91ca\u3002\u8be5\u7814\u7a76\u52a0\u6df1\u4e86\u5bf9\u6676\u754c\u548c\u76f8\u754c\u504f\u6790\u673a\u5236\u7684\u8ba4\u8bc6\uff0c\u4e3a\u901a\u8fc7\u63ba\u6742\u5143\u7d20\u754c\u9762\u504f\u6790\u8bbe\u8ba1\u548c\u7cbe\u786e\u8c03\u63a7\u65b0\u578b\u73bb\u7483\u9676\u74f7\u63d0\u4f9b\u91cd\u8981\u7406\u8bba\u4f9d\u636e\u3002<\/p>\n

\u3010\u76f8\u5173\u7814\u7a76\u3011<\/strong><\/p>\n

\u4e2d\u5357\u5927\u5b66\u9752\u5e74\u6559\u5e08\u5085\u4e50\u535a\u58eb\u53ca\u5176\u5408\u4f5c\u8005\u81f4\u529b\u4e8e\u5f00\u53d1\u65b0\u4e00\u4ee3\u9ad8\u5f3a\u9ad8\u97e7\u534a\u900f\u660eZrO2<\/sub>-SiO2<\/sub>\u7cfb\u7eb3\u7c73\u73bb\u7483\u9676\u74f7\uff0c\u76f8\u5173\u6210\u679c\u5df2\u53d1\u8868\u4e8eJournal of the European Ceramic Society \u548cNano Letters\uff0c\u5e76\u6210\u529f\u7533\u8bf7\u56fd\u9645PCT\u4e13\u5229\u4e00\u9879\uff0c\u8be5\u9ad8\u5f3a\u9ad8\u97e7\u534a\u900f\u660eZrO2<\/sub>-SiO2<\/sub>\u7cfb\u7eb3\u7c73\u73bb\u7483\u9676\u74f7\u5177\u6709\u826f\u597d\u7684\u5e02\u573a\u5e94\u7528\u524d\u666f\uff0c\u76f8\u5173\u7814\u7a76\u6210\u679c\u5982\u4e0b\uff1a<\/p>\n

\"\"<\/p>\n

Fig.6 STEM-HAADF images (a-b) and EELS mapping (c) of the 35mol%ZrO2<\/sub>-65mol%SiO2<\/sub> NCGC. EELS mapping shows the distinct elemental distribution of Zr (red) and Si (green).<\/p>\n

\u91c7\u7528\u6eb6\u80f6\u51dd\u80f6\u6cd5\u5236\u5907\u4e86\u6210\u5206\u4e3a35mol%ZrO2<\/sub>-65mol%SiO2<\/sub>\u7684\u975e\u6676\u539f\u59cb\u7c89\u4f53\uff0c\u7136\u540e\u5229\u7528\u7b49\u79bb\u5b50\u4f53\u7535\u706b\u82b1\u70e7\u7ed3\u6280\u672f\uff08SPS\uff09\u5c06\u5176\u70e7\u7ed3\u6210100%\u81f4\u5bc6\u5757\u4f53\u73bb\u7483\u9676\u74f7\u3002\u8be5\u73bb\u7483\u9676\u74f7\u5177\u6709\u5f88\u9ad8\u7684\u900f\u660e\u5ea6\uff08Fig. 6, inset\uff09\uff0cSTEM-HAADF\u7ed3\u679c\u8868\u660e\u8be5\u73bb\u7483\u9676\u74f7\u7531\u76f4\u5f84\u7ea6\u4e3a20 nm\u7684\u7eb3\u7c73ZrO2<\/sub>\u7403\u6784\u6210\uff0c\u4e14\u5176\u4e3a\u5355\u6676\u56db\u65b9\u76f8ZrO2<\/sub>\u7403\uff0cSiO2<\/sub>\u4ee5\u975e\u6676\u57fa\u8d28\u7684\u5f62\u5f0f\u5b58\u5728\uff08Fig. 6\uff09\u3002\u8be5\u73bb\u7483\u9676\u74f7\u7684\u5e73\u5747\u6297\u5f2f\u5f3a\u5ea6\u548c\u65ad\u88c2\u97e7\u6027\u5206\u522b\u4e3a268 MPa\u548c4.08 MPa\u00b7m-1\/2<\/sup>\u3002<\/p>\n

L. Fu<\/strong>, C. Wu*, K. Grandfield, E. Unosson, J. Chang, H. Engqvist, W. Xia*,Transparent single crystalline ZrO2<\/sub>-SiO2<\/sub> glass nanoceramic sintered by SPS, J. Eur. Ceram. Soc. 36 (2016) 3487\u20133494.<\/p>\n

\"\"<\/p>\n

Fig.7 STEM-HAADF images (a-b) of 65mol%ZrO2<\/sub>-35mol%SiO2<\/sub> NCGC and optical image (c) of the ZrO2<\/sub>-SiO2<\/sub> NCGC with ZrO2 content of 45mol%(45Zr), 55mol%(55Zr), and 65mol%(65Zr). The samples have a thickness of approximately 1 mm.<\/p>\n

\u540c\u6837\u91c7\u7528\u6eb6\u80f6\u51dd\u80f6\u6cd5\u548cSPS\u6280\u672f\u5236\u5907\u4e86ZrO2<\/sub>\u542b\u91cf\u5206\u522b\u4e3a45mol%(45Zr), 55mol%(55Zr)\u548c65mol%(65Zr)\u7684ZrO2<\/sub>-SiO2<\/sub>\u7eb3\u7c73\u73bb\u7483\u9676\u74f7\u3002STEM-HAADF\uff08Fig.7a\u548cb\uff09\u8868\u660e\u5728\u6210\u5206\u4e3a65mol%ZrO2<\/sub>-35mol%SiO2<\/sub> \u7684\u7eb3\u7c73\u73bb\u7483\u9676\u74f7\u4e2d\uff0cZrO2<\/sub>\u7eb3\u7c73\u7c92\u5b50\u4e0d\u518d\u662f\u7403\u5f62\uff0c\u800c\u53d8\u6210\u4e86\u692d\u7403\u5f62\uff0c\u5c3a\u5bf8\u4e5f\u957f\u5927\u5230\u7ea650 nm\u3002ZrO2<\/sub>\u7eb3\u7c73\u7c92\u5b50\u4e4b\u95f4\u5f62\u6210\u4e86\u6676\u754c\uff0c\u540c\u65f6\u5728\u70e7\u7ed3\u8fc7\u7a0b\u4e2dZrO2<\/sub>\u7eb3\u7c73\u7c92\u5b50\u51fa\u73b0\u4e86\u5408\u5e76\u73b0\u8c61\u3002\u968f\u7740ZrO2<\/sub>\u542b\u91cf\u7684\u589e\u52a0\uff0c\u8be5ZrO2<\/sub>-SiO2<\/sub>\u7eb3\u7c73\u73bb\u7483\u9676\u74f7\u7684\u900f\u660e\u5ea6\u6709\u6240\u4e0b\u964d\uff0c\u4f46\u662f\u5373\u4fbf\u662fZrO2<\/sub>\u542b\u91cf\u6700\u9ad8\u768465mol%ZrO2<\/sub>-35mol%SiO2<\/sub> \u7eb3\u7c73\u73bb\u7483\u9676\u74f7\u4ecd\u662f\u534a\u900f\u660e\u7684\uff0c\u4e14\u5176\u5e73\u5747\u6297\u5f2f\u5f3a\u5ea6\u8fbe\u5230\u4e861014 MPa\uff0c\u8fd9\u662f\u76ee\u524d\u5df2\u6709\u6587\u732e\u62a5\u9053\u4e2d\u6297\u5f2f\u5f3a\u5ea6\u6700\u9ad8\u7684\u73bb\u7483\u9676\u74f7\u3002<\/p>\n

L. Fu<\/strong>,H. Engqvist, W. Xia*, Highly translucent and strong ZrO2<\/sub>-SiO2<\/sub> nanocrystalline glass ceramic prepared by sol-gel method and spark plasma sintering with fine 3D microstructure for dental restoration, J. Eur. Ceram. Soc. 37 (2017) 4067\u20134081.<\/p>\n

\"\"<\/p>\n

Fig. 8 Electron tomography results. (a) An overview of the 3D spatial distribution of ZrO2<\/sub> NPs; (d) Near parallel ZrO2<\/sub> nanofibers stacked in the Y-axis direction (indicated by yellow and white dash lines in Snapshot A). The nanofibers are connected in the Y-axis direction (marked by orange arrows); (c) ZrO2<\/sub> NPs in nanofibers are connected by grain boundaries (marked by white arrows). The ZrO2<\/sub> nanofibers (marked by yellow dash lines) also show a stacking order in the Z-axis direction.<\/p>\n

\"\"<\/p>\n

Fig. 9 Schematic illustration of ZrO2<\/sub> NP (core) and Zr\/Si interfacial layer (shell) structure.<\/p>\n

\u4e3a\u6df1\u5165\u63a2\u7a7665mol%ZrO2<\/sub>-35mol%SiO2<\/sub>\u7eb3\u7c73\u73bb\u7483\u9676\u74f7\u7684\u8d85\u9ad8\u6297\u5f2f\u5f3a\u5ea6\u7684\u6750\u6599\u5fae\u89c2\u7ed3\u6784\u6765\u6e90\uff0c\u4f5c\u8005\u548c\u5176\u5408\u4f5c\u8005\u8fd0\u7528\u900f\u5c04\u7535\u955c\u7535\u5b50\u65ad\u5c42\u626b\u63cf\u6280\u672f\uff08Electron tomography\uff09\u89c2\u5bdfZrO2<\/sub>\u7eb3\u7c73\u7c92\u5b50\u5728\u4e09\u7ef4\u7a7a\u95f4\u7684\u5206\u5e03\uff08Fig.8\uff09\uff0c\u53d1\u73b0\u5927\u90e8\u5206ZrO2<\/sub>\u7eb3\u7c73\u7c92\u5b50\u5f62\u6210\u4e86\u7eb3\u7c73\u7ea4\u7ef4\uff0c\u8fd9\u4e9b\u7eb3\u7c73\u7ea4\u7ef4\u5728\u5177\u6709\u4e00\u5b9a\u7684\u6392\u5217\u987a\u5e8f\uff0c\u540c\u65f6\u5728\u4e09\u7ef4\u7a7a\u95f4\u5185\u76f8\u8fde\u5f62\u6210\u4e86\u5177\u6709\u4e00\u5b9a\u5fae\u89c2\u7ed3\u6784\u7684\u4e09\u7ef4\u7eb3\u7c73\u67b6\u7ed3\u6784\uff083D nanoarchitecture\uff09\uff0c\u8be5\u7eb3\u7c73\u73bb\u7483\u9676\u74f7\u5728\u627f\u53d7\u5916\u529b\u65f6\uff0c\u6b64ZrO2<\/sub>\u4e09\u7ef4\u9aa8\u67b6\u7ed3\u6784\u627f\u53d7\u4e3b\u8981\u5916\u529b\uff0c\u975e\u6676SiO2<\/sub>\u57fa\u8d28\u8d77\u5230\u5e94\u529b\u4f20\u9012\u4f5c\u7528\uff1b\u4e0e\u6b64\u540c\u65f6STEM-EDS\u8bc1\u5b9e\u5728ZrO2<\/sub>\u7eb3\u7c73\u7c92\u5b50\u548c\u975e\u6676SiO2<\/sub>\u57fa\u8d28\u4e4b\u95f4\u8fd8\u5f62\u6210\u4e862-3 nm\u539a\u7684\u754c\u9762\u8fc7\u6e21\u5c42\uff0c\u6b63\u662f\u754c\u9762\u8fc7\u6e21\u5c42\u7684\u5b58\u5728\u4f7f\u5f97ZrO2<\/sub>\u7eb3\u7c73\u7c92\u5b50\u4e0e\u975e\u6676SiO2<\/sub>\u57fa\u8d28\u7d27\u5bc6\u7ed3\u5408\u5728\u4e00\u8d77\uff0c\u5b9e\u73b0ZrO2<\/sub>\u7eb3\u7c73\u7c92\u5b50\u4e0e\u975e\u6676SiO2<\/sub>\u57fa\u8d28\u4e4b\u95f4\u826f\u597d\u7684\u5e94\u529b\u4f20\u9012\u3002\u4ee5\u4e0a\u4e24\u65b9\u9762\u56e0\u7d20\u8d4b\u4e88\u4e86\u8be5ZrO2<\/sub>-SiO2<\/sub>\u7eb3\u7c73\u73bb\u7483\u9676\u74f7\u8d85\u9ad8\u7684\u6297\u5f2f\u5f3a\u5ea6\u3002<\/p>\n

L. Fu#<\/sup><\/strong>, , L. Xie#<\/sup><\/strong>, W. F, S. Hu, Z. Zhang, K. Leifer, H. Engqvist, W. Xia*, Ultrastrong Translucent Glass Ceramic with Nanocrystalline, Biomimetic Structure, Nano Lett. 18 (2018) 7146\u22127154.<\/p>\n","protected":false},"excerpt":{"rendered":"

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