{"id":224795,"date":"2021-07-23T06:47:30","date_gmt":"2021-07-22T22:47:30","guid":{"rendered":"\/\/m.iemloyee.com\/?p=224795"},"modified":"2021-07-22T20:47:46","modified_gmt":"2021-07-22T12:47:46","slug":"%e9%87%91%e5%b1%9e%e6%89%80%e4%b8%8a%e6%b5%b7%e4%ba%a4%e5%a4%a7sci-adv-%e5%8e%9a%e5%ba%a6%e5%8f%af%e6%8e%a7%e7%9a%84%e8%b6%85%e5%bc%ba%e7%ba%b3%e7%b1%b3%e5%ad%aa%e6%99%b6%e5%88%b6%e5%a4%87","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=224795","title":{"rendered":"\u91d1\u5c5e\u6240&\u4e0a\u6d77\u4ea4\u5927Sci. Adv.:\u539a\u5ea6\u53ef\u63a7\u7684\u8d85\u5f3a\u7eb3\u7c73\u5b6a\u6676\u5236\u5907"},"content":{"rendered":"

\u3010\u5f15\u8a00\u3011<\/b><\/strong><\/p>\n

Hall-Petch\u5f3a\u5316\u6e90\u4e8e\u6676\u754c\u6216\u5b6a\u6676\u754c\uff08GBs\u6216TBs\uff09\u963b\u788d\u4e86\u4f4d\u9519\u8fd0\u52a8\uff0c\u662f\u4e00\u79cd\u7ecf\u5178\u4e14\u6700\u6709\u6548\u7684\u63d0\u9ad8\u6750\u6599\u5f3a\u5ea6\u548c\u786c\u5ea6\u7684\u65b9\u6cd5\u3002\u5728\u6b64\u7406\u8bba\u7684\u57fa\u7840\u4e0a\uff0c\u6750\u6599\u53ef\u4ee5\u6781\u7ec6\u7684\u6676\u7c92\u5c3a\u5bf8\u6216\u5b6a\u6676\u539a\u5ea6\u4e0b\u8fbe\u5230\u7406\u8bba\u5f3a\u5ea6\u3002\u4e0d\u5e78\u7684\u662f\uff0c\u5148\u524d\u7684\u7814\u7a76\u8868\u660e\uff0c\u5f53\u6676\u7c92\u5c3a\u5bf8\u6216\u5b6a\u6676\u539a\u5ea6\u4f4e\u4e8e\u67d0\u4e34\u754c\u5c3a\u5bf8\uff08\u901a\u5e38\u7ea6\u4e3a10\u523015 nm\uff09\u65f6\uff0c\u5c48\u670d\u5f3a\u5ea6\u8981\u4e48\u4fdd\u6301\u4e0d\u53d8\uff0c\u8981\u4e48\u968f\u7740\u6676\u7c92\u5c3a\u5bf8\u6216\u5b6a\u6676\u539a\u5ea6\u7684\u51cf\u5c0f\u800c\u964d\u4f4e\uff0c\u8fd9\u79cd\u73b0\u8c61\u88ab\u79f0\u4e3a Hall-Petch\u5173\u7cfb\u5931\u6548\u6216\u8f6f\u5316\u3002\u73b0\u6709\u7406\u8bba\u8868\u660e\u7eb3\u7c73\u6676(NG) \u548c\u7eb3\u7c73\u5b6a\u6676 (NT) \u91d1\u5c5e\u7684\u8f6f\u5316\u673a\u5236\u4e0d\u540c\uff1b\u524d\u8005\u7684\u8f6f\u5316\u662f\u7531GB\u6d3b\u52a8\uff0c\u6bd4\u5982GB\u6ed1\u52a8\u6216\u6676\u7c92\u8f6c\u52a8\u5f15\u8d77\u7684\uff0c\u800c\u540e\u8005\u662f\u7531\u8f6f\u6a21\u5f0f\u4f4d\u9519\uff08\u8096\u514b\u83b1\u4e0d\u5168\u4f4d\u9519\u6cbfTB\u6ed1\u52a8\uff09\u6216\u9000\u5b6a\u751f\u5f15\u8d77\u7684\u3002\u6291\u5236\u8fd9\u4e9b\u8f6f\u5316\u673a\u5236\u548c\u5b9e\u73b0\u4f4e\u4e8e\u4e34\u754c\u5c3a\u5bf8\u7684\u6301\u7eed\u5f3a\u5316\u65b9\u9762\u4ecd\u662f\u4e00\u9879\u5de8\u5927\u7684\u6311\u6218\u3002\u5c06\u6eb6\u8d28\u539f\u5b50\u504f\u6790\u5728GBs\u548cTBs\u53ef\u4ee5\u6709\u6548\u964d\u4f4e\u8fc1\u79fb\u9a71\u52a8\u529b\uff0c\u4ece\u800c\u6291\u5236GBs\u548cTBs\u8fc1\u79fb\uff0c\u5373\u6291\u5236NG\/NT \u5408\u91d1\u7684\u8f6f\u5316\u6548\u5e94\u3002\u7ed3\u679c\u8868\u660e\uff0c\u5373\u4f7f\u6676\u7c92\u5c3a\u5bf8\u6216\u5b6a\u6676\u539a\u5ea6\u4f4e\u4e8e10\u00a0nm\uff0c\u4e5f\u80fd\u5b9e\u73b0\u8fde\u7eed\u5f3a\u5316\u3002\u7136\u800c\uff0c\u8fd9\u79cd\u65b9\u6cd5\u663e\u800c\u6613\u89c1\u65e0\u6cd5\u5728\u7eaf\u91d1\u5c5e\u4e2d\u5b9e\u73b0\u4f4e\u4e8e10nm\u7684\u6676\u7c92\u5c3a\u5bf8\u6216\u5b6a\u6676\u539a\u5ea6\u7684\u8fde\u7eed\u5f3a\u5316\u3002<\/p>\n

\u8fd1\u65e5\uff0c\u4e2d\u56fd\u79d1\u5b66\u9662\u91d1\u5c5e\u7814\u7a76\u6240<\/strong>\u674e\u6bc5\u7814\u7a76\u5458<\/strong>\u3001\u6f58\u6770\u526f\u7814\u7a76\u5458\u3001\u6bb5\u5cf0\u8f89\u7279\u522b\u7814\u7a76\u52a9\u7406\uff08\u7b2c\u4e00\u4f5c\u8005\uff09\u548c\u4e0a\u6d77\u4ea4\u901a\u5927\u5b66\u90ed\u5f3a\u6559\u6388<\/strong>\uff08<\/strong>\u5171\u540c<\/strong>\u901a\u8baf\u4f5c\u8005\uff09<\/strong>\u901a\u8fc7\u76f4\u6d41\uff08DC\uff09\u7535\u6c89\u79ef\u6210\u529f\u5236\u9020\u4e86\u5b6a\u6676\u7247\u5c42\u539a\u5ea6\u8303\u56f4\u4e3a2.9\u81f381.0\u00a0nm\u7684\u67f1\u72b6NT-Ni\uff0c\u5e76\u5b9e\u73b0\u4e86\u5176\u6301\u7eed\u5f3a\u5316\u6027\u3002\u540c\u65f6\uff0c\u5f3a\u5316\u53ef\u4ee5\u6269\u5c55\u5230 2.9\u00a0nm\u7684\u5b6a\u6676\u7247\u5c42\u539a\u5ea6\uff0c\u4ece\u800c\u83b7\u5f974.0 GPa\u7684\u8d85\u9ad8\u5f3a\u5ea6\u3002\u900f\u5c04\u7535\u5b50\u663e\u5fae\u955c(TEM)\u5b9e\u73b0\u89c2\u5bdf \u8868\u660e\uff0c\u8fd9\u79cd\u5f3a\u5316\u673a\u5236\u5f52\u56e0\u4e8e\u8d85\u7ec6\u7247\u5c42\u95f4\u8dddTBs\u7684\u4f18\u5f02\u7a33\u5b9a\u6027\uff0c\u963b\u788d\u4e86\u9000\u5b6a\u751f\u5e76\u8bf1\u5bfc\u4e86\u4e8c\u6b21\u5b6a\u6676\u7684\u5f62\u6210\uff0c\u8fd9\u4e9b\u5b6a\u6676\u6709\u6548\u5730\u963b\u788d\u4e86\u4f4d\u9519\u8fd0\u52a8\u3002\u76f8\u5173\u7814\u7a76\u6210\u679c\u4ee5\u201cUltrastrong nanotwinned pure nickel with extremely fine twin thickness\u201d\u4e3a\u9898\u53d1\u8868\u5728Science Advances<\/i><\/em><\/strong>\u4e0a\u3002<\/p>\n

\u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/b><\/strong><\/p>\n

\u56fe<\/b><\/strong>\u4e00<\/b><\/strong>\u3001<\/b><\/strong>\u8d85\u7ec6\u7eb3\u7c73\u5b6a\u6676<\/b><\/strong>Ni<\/b><\/strong>\uff08NT<\/b><\/strong>-Ni<\/b><\/strong>\uff09<\/b><\/strong>\u7684\u5178\u578b\u5fae\u89c2\u7ed3\u6784<\/b><\/strong>\"\"<\/b><\/strong><\/p>\n

\uff08a\uff09\u5e73\u9762\u548c\u6a2a\u622a\u9762\u660e\u573aTEM\u56fe\u50cf\u7ec4\u6210\u7684NT-Ni\u4e09\u7ef4\u7ed3\u6784\uff1b<\/p>\n

\uff08b\uff0cc\uff09NT-2.9\u6837\u54c1\u7684TEM\u548cHR TEM\u56fe\u50cf\u6d4b\u91cf\u7684\u6676\u7c92\u5c3a\u5bf8\u53ca\u5b6a\u6676\u7247\u5c42\u5206\u5e03\uff1b<\/p>\n

\uff08d\uff09NT-2.9\u6837\u54c1\u7684\u6a2a\u622a\u9762TEM\u56fe\u50cf\uff1b<\/p>\n

\uff08e\uff09\u6cbf[011]\u8f74\u7684HRTEM\u56fe\u50cf\uff1b<\/p>\n

\uff08f\uff09NT-2.9\u6837\u54c1\u4e2d\u5360\u4e3b\u5bfc\u7684\uff08111\uff09\u65b9\u5411\u7684XRD\u56fe\u8c31\uff1b<\/p>\n

\u56fe<\/b><\/strong>\u4e8c\u3001<\/b><\/strong>NT-Ni<\/b><\/strong>\u7684\u529b\u5b66\u6027\u80fd<\/b><\/strong>\"\"<\/b><\/strong><\/p>\n

\u56fe<\/b><\/strong>\u4e09<\/b><\/strong>\u3001NT-Ni<\/b><\/strong>\u7684\u6301\u7eed\u5f3a\u5316<\/b><\/strong>\"\"<\/p>\n

\u56fe<\/b><\/strong>\u56db<\/b><\/strong>\u3001NT-Ni\u7684\u53d8\u5f62\u673a\u7406<\/b><\/strong>\"\"<\/p>\n

\uff08A\uff09\u660e\u573a\u56fe\u50cf\u663e\u793a\u4e86\u6837\u54c1\u526a\u5207\u5931\u6548\u548c\u67f1\u72b6\u6676\u7c92\uff1b<\/p>\n

\uff08B\uff09\u653e\u5927TEM\u56fe\u50cf\u663e\u793a\u53d8\u5f62\u533a\u57df\u4fdd\u7559\u7684\u7eb3\u7c73\u5b6a\u6676\u7ed3\u6784\uff1b<\/p>\n

\uff08C\uff0cD\uff09\u5178\u578b\u7684HRTEM\u56fe\u50cf\u548c\u76f8\u5e94\u7684GPA\u5e94\u53d8\u56fe\u3002<\/p>\n

\u56fe\u4e94\u3001\u53d8\u5f62NT-2.9\u6837\u54c1\u4e2d\u7684\u4e8c\u6b21\u7eb3\u7c73\u5b6a\u6676\u5f62\u6210<\/b><\/strong>\"\"<\/p>\n

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\u3010\u5c0f\u7ed3\u3011<\/b><\/strong><\/p>\n

\u7efc\u4e0a\u6240\u8ff0\uff0c\u4f5c\u8005\u901a\u8fc7\u76f4\u6d41\u7535\u6c89\u79ef\u83b7\u5f97\u4e86\u5177\u6709\u6781\u7ec6\u5b6a\u6676\u7247\u5c42\u539a\u5ea6\u7684NT-Ni\uff0c\u5176\u5f3a\u5ea6\u9ad8\u8fbe4.0 GPa\uff0c\u8fdc\u9ad8\u4e8e\u5df2\u77e5\u7eafNi\u7684\u5f3a\u5ea6\u3002\u8fd9\u79cd\u5f3a\u5ea6\u6e90\u81ea\u5ef6\u4f38\u81f3\u6700\u7ec6\u5b6a\u6676\u7247\u5c42\u539a\u5ea6 (2.9 nm) \u7684\u6301\u7eed\u5f3a\u5316\u3002\u4e00\u65b9\u9762\uff0c\u6301\u7eed\u5f3a\u5316\u884c\u4e3a\u6e90\u4e8eTBs\u4f18\u5f02\u7a33\u5b9a\u6027\u53ca\u5176\u5bf9\u4f4d\u9519\u5f62\u6838\u548c\u8fd0\u52a8\u7684\u6709\u6548\u963b\u788d\uff1b\u53e6\u4e00\u65b9\u9762\uff0c\u4e8c\u6b21\u7eb3\u7c73\u5b6a\u6676\u4f5c\u4e3a\u8fdb\u4e00\u6b65\u963b\u788d\u4f4d\u9519\u8fd0\u52a8\u7684\u65b0\u969c\u788d\u3002\u672c\u7814\u7a76\u4e0d\u4ec5\u4e3a\u5728\u9ad8\u5c42\u9519\u80fd\u91d1\u5c5e\u4e2d\u5408\u6210\u5177\u6709\u6781\u7ec6\u5b6a\u6676\u7247\u5c42\u539a\u5ea6\u7684NT\u7ed3\u6784\u63d0\u4f9b\u4e86\u673a\u4f1a\uff0c\u800c\u4e14\u9610\u660e\u4e86Hall-Petch\u5f3a\u5316\u53ef\u4ee5\u901a\u8fc7\u8c03\u63a7\u7eb3\u7c73\u7ed3\u6784\u91d1\u5c5e\u7684\u7ed3\u6784\u6269\u5c55\u5230\u975e\u5e38\u7cbe\u7ec6\u7684\u7ed3\u6784\u5c3a\u5bf8\uff0c\u63d0\u4f9b\u4e86\u4e00\u79cd\u65b0\u7684\u8d85\u5f3a\u548c\u8d85\u786c\u6750\u6599\u7684\u8bbe\u8ba1\u601d\u8def\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1a\u201c<\/strong>Ultrastrong nanotwinned pure nickel with extremely fine twin thickness<\/u><\/strong><\/a>\u201d(<\/strong>Science Advances<\/i><\/em><\/strong>\uff0c<\/b><\/strong>202<\/strong>1<\/strong>\uff0c10.1126\/sciadv.abg5113)<\/strong><\/p>\n

\u56e2\u961f\u5de5\u4f5c\u4ecb\u7ecd\uff1a\u4e2d\u56fd\u79d1\u5b66\u9662\u91d1\u5c5e\u7814\u7a76\u6240\u674e\u6bc5\u7814\u7a76\u5458\u81ea2012\u5e74\u5168\u804c\u56de\u56fd\u5de5\u4f5c\u540e\u4e13\u6ce8\u4e8e\u6784\u7b51\u6750\u6599\u65b9\u9762\u7684\u7814\u7a76\uff0c\u4e3b\u8981\u7814\u7a76\u4e0d\u540c\u5c3a\u5ea6\u975e\u5747\u5300\u6027\u7684\u7ed3\u6784\u6750\u6599\u5305\u62ec\u7eb3\u7c73\u5b6a\u6676\u3001\u68af\u5ea6\u6750\u6599\u3001\u91d1\u5c5e-\u91d1\u5c5e\u7816\u780c\u7ed3\u6784\u548c\u975e\u6676\u5408\u91d1\u7cfb\u5217\u91d1\u5c5e\u6750\u6599\u3002\u63a2\u7a76\u4e86\u68af\u5ea6\u7387\u5bf9\u68af\u5ea6\u91d1\u5c5e\u6750\u6599\u7684\u7efc\u5408\u6027\u80fd\uff0c\u5305\u62ec\u5f3a\u5ea6\u3001\u5851\u6027\u7b49\u65b9\u9762\u7684\u5f71\u54cd\uff0c\u76f8\u5173\u5de5\u4f5c\u53d1\u8868\u5728A<\/strong>cta Materialia, 2018<\/strong>\u4e0a\u3002\u9996\u6b21\u6f14\u793a\u5e76\u5206\u6790\u4e86\u68af\u5ea6\u7eb3\u7c73\u7ed3\u6784\u7684\u65ad\u88c2\u884c\u4e3a\uff0c\u76f8\u5173\u5de5\u4f5c\u53d1\u8868\u5728Materials Today, 2020\u4ee5\u53caA<\/strong>cta Materialia, 2020<\/strong>\u4e0a\uff1b\u9996\u6b21\u514b\u670d\u7eb3\u7c73\u91d1\u5c5e\u6750\u6599\u6781\u5c0f\u7ed3\u6784\u5c3a\u5bf8\u4e0b\u7684\u8f6f\u5316\u73b0\u8c61\uff0c\u5728\u9ad8\u5c42\u9519\u80fd\u954d\u4e2d\u5236\u5907\u4e86\u6781\u5c0f\u5b6a\u6676\u7247\u5c42\u7ed3\u6784\u4ece\u800c\u5b9e\u73b0\u4e86\u6301\u7eed\u5f3a\u5316\uff0c\u5f3a\u5ea6\u9ad8\u8fbe\u7c97\u6676\u954d\u768412\u500d(Science Advances\uff0c2021). \u6b64\u5916\uff0c\u674e\u6bc5\u7814\u7a76\u5458\u56e2\u961f\u901a\u8fc7\u52a0\u5f3a\u975e\u6676\u5408\u91d1\u5728\u539f\u5b50-\u7eb3\u7c73\u5c3a\u5ea6\u7684\u975e\u5747\u5300\u6027\uff0c\u9996\u5148\u5f00\u53d1\u51fa\u4e86\u6700\u9ad8\u80fd\u91cf\u72b6\u6001\u7684\u76f8\u5f53\u4e8e\u51b7\u901f\u4e3a10<\/strong>10 <\/sup><\/strong>K\/s\u7684\u975e\u6676\u5408\u91d1\uff08Nature Communications<\/strong>,<\/strong>\u00a02018\uff09\uff0c\u5728\u6b64\u57fa\u7840\u4e0a\uff0c\u9996\u6b21\u5728\u5757\u4f53\u975e\u6676\u6001\u6750\u6599\u4e2d\u5b9e\u73b0\u52a0\u5de5\u786c\u5316\uff08Nature\uff0c2020\uff09\uff0c\u98a0\u8986\u4e86\u4eba\u4eec\u5bf9\u975e\u6676\u6001\u6750\u6599\u5f62\u53d8\u8f6f\u5316\u884c\u4e3a\u7684\u56fa\u6709\u8ba4\u8bc6\u3002\u8fd9\u4e9b\u539f\u521b\u6027\u6210\u679c\u5bf9\u5f00\u53d1\u68af\u5ea6\u7eb3\u7c73\u7ed3\u6784\u7684\u5de5\u7a0b\u6750\u6599\u5177\u6709\u91cd\u8981\u7684\u53c2\u8003\u4ef7\u503c\uff0c\u53ef\u4ea7\u751f\u6301\u4e45\u7684\u5f71\u54cd\u529b\u3002\u6b64\u5916\uff0c\u4e3a\u5f00\u53d1\u5177\u6709\u5851\u6027\u53d8\u5f62\u80fd\u529b\u7684\u975e\u6676\u5408\u91d1\u53ca\u5176\u5de5\u4e1a\u5e94\u7528\u63d0\u4f9b\u4e86\u65b0\u601d\u8def\u548c\u65b9\u5411\u3002<\/strong><\/p>\n

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