{"id":144939,"date":"2018-07-07T08:00:19","date_gmt":"2018-07-07T00:00:19","guid":{"rendered":"\/\/m.iemloyee.com\/?p=144939"},"modified":"2018-07-07T07:59:50","modified_gmt":"2018-07-06T23:59:50","slug":"%e6%b5%99%e6%b1%9f%e5%a4%a7%e5%ad%a6%e5%bc%a0%e6%b3%bd%e9%99%a2%e5%a3%ab%e5%9b%a2%e9%98%9f%e7%8e%8b%e6%b1%9f%e4%bc%9f%e7%a0%94%e7%a9%b6%e5%91%98sci-adv-%e4%bd%93%e5%bf%83%e7%ab%8b%e6%96%b9%e9%87%91","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=144939","title":{"rendered":"\u6d59\u6c5f\u5927\u5b66\u5f20\u6cfd\u9662\u58eb\u56e2\u961f\u738b\u6c5f\u4f1f\u7814\u7a76\u5458Sci. Adv.:\u4f53\u5fc3\u7acb\u65b9\u91d1\u5c5e\u7eb3\u7c73\u7ebf\u7684\u8d85\u5851\u6027\u53d8\u5f62"},"content":{"rendered":"

\u3010\u5f15<\/b><\/strong>\u00a0<\/b><\/strong>\u8a00\u3011<\/b><\/strong><\/p>\n

\u4f53\u5fc3\u7acb\u65b9\uff08body-centered cubic, BCC\uff09\u7ed3\u6784\u7684\u91d1\u5c5e\u7eb3\u7c73\u7ebf\u5177\u6709\u4f18\u5f02\u7684\u529b\u5b66\u6027\u80fd\u548c\u51fa\u8272\u7684\u8010\u9ad8\u6e29\u6027\u80fd\uff0c\u6709\u671b\u88ab\u7528\u4e8e\u6784\u7b51\u82db\u523b\u6761\u4ef6\u4e0b\u670d\u5f79\u7684\u5fae\u7eb3\u5668\u4ef6\u3002\u7136\u800c\uff0c\u7531\u4e8e\u73b0\u6709\u5b9e\u9a8c\u6280\u672f\u7684\u9650\u5236\uff0cBCC\u91d1\u5c5e\u7eb3\u7c73\u7ebf\u7684\u529b\u5b66\u6027\u80fd\u53ca\u5176\u53d8\u5f62\u673a\u5236\u7684\u7814\u7a76\u4ecd\u7136\u5341\u5206\u532e\u4e4f\u3002\u7279\u522b\u662f\u5bf9\u4e8e100\u7eb3\u7c73\u4ee5\u4e0b\u7684\u7eb3\u7c73\u7ebf\u800c\u8a00\uff0c\u7531\u4e8e\u51e0\u4f55\u5c3a\u5bf8\u7684\u9650\u5236\uff0c\u91d1\u5c5e\u7eb3\u7c73\u7ebf\u7684\u5851\u6027\u53d8\u5f62\u901a\u5e38\u7531\u5355\u4e00\u673a\u5236\u4e3b\u5bfc\uff0c\u6781\u5927\u7684\u9650\u5236\u4e86\u7eb3\u7c73\u7ebf\u7684\u53d8\u5f62\u80fd\u529b\u3002\u662f\u5426\u53ef\u4ee5\u901a\u8fc7\u6fc0\u53d1\u591a\u91cd\u53d8\u5f62\u673a\u5236\u6765\u63d0\u9ad8\u7eb3\u7c73\u7ebf\u7684\u5851\u6027\u53d8\u5f62\u80fd\u529b\u662f\u5927\u5bb6\u666e\u904d\u5173\u6ce8\u7684\u70ed\u70b9\u95ee\u9898\u3002<\/p>\n

\u3010\u6210\u679c\u7b80\u4ecb\u3011<\/b><\/strong><\/p>\n

\u8fd1\u65e5\uff0c\u6d59\u6c5f\u5927\u5b66\u6750\u6599\u79d1\u5b66\u4e0e\u5de5\u7a0b\u5b66\u9662\u5f20\u6cfd\u9662\u58eb\u3001\u738b\u6c5f\u4f1f\u7814\u7a76\u5458\u548c\u7f8e\u56fd\u5339\u5179\u5821\u5927\u5b66\u6bdb\u661f\u539f\u6559\u6388\u7b49\u4eba\uff0c\u5229\u7528\u5148\u8fdb\u7684\u7403\u5dee\u6821\u6b63\u7535\u5b50\u663e\u5fae\u955c\u7ed3\u5408\u529b-\u7535\u8026\u5408\u539f\u4f4d\u6837\u54c1\u6746\uff0c\u5bf9\u539f\u4f4d\u5236\u5907\u7684\u7eb3\u7c73\u7ebf\u8fdb\u884c\u529b\u5b66\u52a0\u8f7d\uff0c\u89c2\u5bdf\u5230\u4e86\u4f53\u5fc3\u7acb\u65b9\u91d1\u5c5e\u94cc\uff08Niobium, Nb\uff09\u7eb3\u7c73\u7ebf\u7684\u8d85\u5851\u6027\u53d8\u5f62\u884c\u4e3a\u3002\u672c\u6587\u5229\u7528\u5148\u8fdb\u7684\u7403\u5dee\u6821\u6b63\u7535\u5b50\u663e\u5fae\u955c\u7ed3\u5408\u529b-\u7535\u8026\u5408\u539f\u4f4d\u6837\u54c1\u6746\uff0c\u5bf9\u539f\u4f4d\u5236\u5907\u7684\u7eb3\u7c73\u7ebf\u8fdb\u884c\u529b\u5b66\u52a0\u8f7d\uff0c\u89c2\u5bdf\u5230\u4e86\u4f53\u5fc3\u7acb\u65b9\u91d1\u5c5e\u94cc\uff08Niobium, Nb\uff09\u7eb3\u7c73\u7ebf\u7684\u8d85\u5851\u6027\u53d8\u5f62\u884c\u4e3a\uff0c\u5e76\u901a\u8fc7\u8ffd\u8e2a\u53d8\u5f62\u8fc7\u7a0b\u4e2d\u6676\u4f53\u7ed3\u6784\u7684\u6f14\u53d8\uff0c\u8fdb\u4e00\u6b65\u63ed\u793a\u4e86\u591a\u91cd\u53d8\u5f62\u673a\u5236\u534f\u540c\u8c03\u63a7\u7684\u53d6\u5411\u8f6c\u53d8\u8fc7\u7a0b\u53ca\u5176\u5bf9\u7eb3\u7c73\u7ebf\u529b\u5b66\u6027\u80fd\u7684\u8d21\u732e\uff0c\u4e3a\u91d1\u5c5e\u7eb3\u7c73\u7ebf\u6027\u80fd\u7684\u4f18\u5316\u53ca\u5e94\u7528\u63d0\u4f9b\u4e86\u5173\u952e\u4f9d\u636e\u3002\u76f8\u5173\u6210\u679c\u4ee5\u201cConsecutive crystallographic reorientations and superplasticity in body-centered cubic niobium nanowires<\/strong>\u201d\u4e3a\u9898\u53d1\u8868\u5728Science Advances\u4e0a\u3002<\/p>\n

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

\u56fe1 Nb\u7eb3\u7c73\u7ebf\u4e2d\u53d8\u5f62\u8bf1\u5bfc\u7684BCC-FCC-BCC\u76f8\u53d8<\/p>\n

\"\"<\/p>\n

(A) \u539f\u4f4d\u5236\u5907\u7684\u76f4\u5f84\u7ea6\u4e3a15nm\u7684Nb\u7eb3\u7c73\u7ebf\u7684\u9ad8\u5206\u8fa8\u56fe\uff1b<\/p>\n

(B) \u5728\u6cbf[03-1]\u65b9\u5411\u62c9\u4f38\u53d8\u5f62\u8fc7\u7a0b\u4e2d\uff0c\u7c89\u8272\u865a\u7ebf\u533a\u57df\u5185\u53d1\u751f[001]-BCC Nb\u5411[011]-FCC Nb\u8f6c\u53d8\uff1b<\/p>\n

(C) \u84dd\u8272\u865a\u7ebf\u533a\u57df\u5185\u53d1\u751f[011]-FCC Nb\u5411[111]-BCC Nb\u8f6c\u53d8\uff1b<\/p>\n

(D) \u968f\u7740\u76f8\u754c\u9762\u7684\u6269\u5c55\uff0cNb\u7eb3\u7c73\u7ebf\u53d1\u751fBCC-FCC-BCC\u8fde\u7eed\u76f8\u53d8\uff0c\u53d6\u5411\u7531\u521d\u59cb\u7684[001]\u8f6c\u53d8\u4e3a[111]\uff1b<\/p>\n

(E-G) BCC-FCC-BCC\u76f8\u53d8\u7684FFT\u56fe\uff1b<\/p>\n

(H) BCC-FCC-BCC\u76f8\u53d8\u8fc7\u7a0b\u4e2d\u6676\u4f53\u70b9\u9635\u8f6c\u53d8\u793a\u610f\u56fe\uff1b<\/p>\n

(I-J) \u7528Bain\u6a21\u578b\u63cf\u8ff0BCC-FCC\u53caFCC-BCC\u76f8\u53d8\u7684\u6676\u4f53\u7ed3\u6784\u793a\u610f\u56fe\u3002<\/p>\n

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\"\"<\/p>\n

(A) \u521d\u59cb\u76f4\u5f84\u4e3a13.7 nm\u7684Nb\u7eb3\u7c73\u7ebf\u7684\u9ad8\u5206\u8fa8\u56fe\uff1b<\/p>\n

(B) \u5728\u6cbf[-12-1]\u65b9\u5411\u65bd\u52a0\u62c9\u5e94\u53d8\u7684\u8fc7\u7a0b\u4e2d\uff0c\u53d8\u5f62\u5b6a\u6676\u7531\u81ea\u7531\u8868\u9762\u5f62\u6838\u5e76\u6a2a\u5411\u8d2f\u7a7f\u6574\u6839\u7eb3\u7c73\u7ebf\uff1b<\/p>\n

(C) \u968f\u7740\u5e94\u53d8\u7684\u4e0d\u65ad\u52a0\u8f7d\uff0c\u53d8\u5f62\u5b6a\u6676\u9010\u5c42\u589e\u539a\uff1b<\/p>\n

(D-G) \u521d\u59cb\u76f4\u5f84\u4e3a14.7 nm\u7684Nb\u7eb3\u7c73\u7ebf\u6cbf[-12-1]\u62c9\u4f38\u8fc7\u7a0b\u4e2d\uff0c\u540c\u6837\u89c2\u5bdf\u5230\u53d8\u5f62\u5b6a\u6676\u7684\u5f62\u6838\u53ca\u751f\u957f\u3002<\/p>\n

\u56fe3 Nb\u7eb3\u7c73\u7ebf\u4e2d\u4f4d\u9519\u6ed1\u79fb\u9020\u6210\u7684\u6676\u4f53\u53d6\u5411\u8f6c\u52a8<\/p>\n

\"\"<\/p>\n

(A-I) \u4f4d\u9519\u6301\u7eed\u5728\u8868\u9762\u4e0d\u540c\u4f4d\u7f6e\u5f62\u6838\u540e\u6cbf(01-1)\u5bc6\u6392\u9762\u6ed1\u51fa\u7eb3\u7c73\u7ebf\uff0c\u4f7f\u5f97Nb\u7eb3\u7c73\u7ebf\u7684\u53d6\u5411\u53d1\u751f\u8fde\u7eed\u8f6c\u52a8\uff1b<\/p>\n

(J) \u5728Nb\u7eb3\u7c73\u7ebf\u65ad\u88c2\u524d\u89c2\u5bdf\u5230\u76844\u4e2a\u539f\u5b50\u7ec4\u6210\u7684\u539f\u5b50\u94fe\uff1b<\/p>\n

(k) \u901a\u8fc7\u4f4d\u9519\u6ed1\u79fb\u53d1\u751f\u6676\u4f53\u53d6\u5411\u8fde\u7eed\u8f6c\u52a8\u7684\u673a\u5236\u793a\u610f\u56fe\u3002<\/p>\n

\u56fe4\u5355\u6676Nb\u7eb3\u7c73\u7ebf\u53d8\u5f62\u8fc7\u7a0b\u4e2d\u7684\u8fde\u7eed\u53d6\u5411\u8f6c\u53d8\u548c\u8d85\u5851\u6027\u53d8\u5f62\u884c\u4e3a<\/p>\n

\"\"<\/p>\n

(A) \u539f\u4f4d\u710a\u63a5\u5236\u5907\u7684\u76f4\u5f84\u4e3a13.7\u7eb3\u7c73\u7684Nb\u7eb3\u7c73\u7ebf\uff1b<\/p>\n

(B) \u76f8\u53d8\u8bf1\u5bfc\u7684[100]BCC-[110]FCC-[111]BCC\u53d6\u5411\u8f6c\u53d8\uff1b<\/p>\n

(C) \u5b6a\u751f\u5f15\u8d77\u7684\u53d6\u5411\u8f6c\u53d8\uff1b<\/p>\n

(D-F) \u4f4d\u9519\u6ed1\u79fb\u5bfc\u81f4\u7684\u6676\u4f53\u53d6\u5411\u8f6c\u52a8\uff1b<\/p>\n

(G) \u591a\u6b21\u53d6\u5411\u8f6c\u53d8\u540e\uff0cNb\u7eb3\u7c73\u7ebf\u7684\u4f38\u957f\u7387\u8fbe\u5230269%\u3002<\/p>\n

\u3010\u5c0f<\/b><\/strong>\u00a0<\/b><\/strong>\u7ed3\u3011<\/b><\/strong><\/p>\n

\u672c\u6587\u91c7\u7528\u4e86BCC\u7ed3\u6784\u7684\u91d1\u5c5eNb\u4f5c\u4e3a\u6a21\u677f\u6750\u6599\uff0c\u4ece\u539f\u5b50\u5c3a\u5ea6\u4e0a\u63ed\u793a\u4e86\u91d1\u5c5eNb\u7eb3\u7c73\u7ebf\u7684\u8d85\u5851\u6027\u53d8\u5f62\u884c\u4e3a\u53ca\u673a\u5236\u3002\u9996\u5148\uff0c\u91c7\u7528\u539f\u4f4d\u710a\u63a5\u6280\u672f\u5728\u7535\u955c\u4e2d\u83b7\u5f97\u76f4\u5f8410~29\u7eb3\u7c73Nb\u5355\/\u53cc\u6676\u91d1\u5c5e\u7eb3\u7c73\u7ebf\uff1b\u901a\u8fc7\u63a7\u5236\u539f\u4f4d\u6837\u54c1\u6746\u7684\u53ef\u52a8\u7aef\u5bf9\u76ee\u6807\u7eb3\u7c73\u7ebf\u65bd\u52a0\u5e94\u53d8\uff0c\u4e0e\u6b64\u540c\u65f6\uff0c\u501f\u52a9\u9ad8\u901f\u76f8\u673a\u5b9e\u65f6\u8bb0\u5f55\u53d8\u5f62\u8fc7\u7a0b\u4e2dNb\u7eb3\u7c73\u7ebf\u6676\u4f53\u7ed3\u6784\u7684\u52a8\u6001\u6f14\u53d8\u3002\u7814\u7a76\u53d1\u73b0\u5728\u5355\u6676Nb\u7eb3\u7c73\u7ebf\u7684\u62c9\u4f38\u53d8\u5f62\u8fc7\u7a0b\u4e2d\uff0c\u5e94\u529b\u8bf1\u5bfc\u7684BCC-FCC-BCC\u76f8\u53d8\u3001\u5b6a\u6676\u548c\u4f4d\u9519\u6ed1\u79fb\u5728\u540c\u4e00\u6839\u7eb3\u7c73\u7ebf\u4e2d\u6b21\u7b2c\u53d1\u751f\uff0c\u4e0d\u65ad\u6539\u53d8\u7740\u7eb3\u7c73\u7ebf\u7684\u6676\u4f53\u5b66\u53d6\u5411\uff1b\u800c\u7eb3\u7c73\u7ebf\u6676\u4f53\u53d6\u5411\u7684\u6539\u53d8\u53c8\u8fdb\u4e00\u6b65\u5f71\u54cd\u7740\u540e\u7eed\u53d8\u5f62\u673a\u5236\u7684\u542f\u52a8\uff1b\u6700\u7ec8\uff0c\u901a\u8fc7\u591a\u91cd\u53d8\u5f62\u673a\u5236\u7684\u534f\u540c\u4f5c\u7528\uff0c\u5b9e\u73b0\u4e86\u4f38\u957f\u7387\u9ad8\u4e8e269%\u7684\u8d85\u5851\u6027\u53d8\u5f62\u3002\u672c\u6587\u501f\u52a9\u5148\u8fdb\u7684\u539f\u4f4d\u7535\u955c\u6280\u672f\uff0c\u6df1\u5165\u5206\u6790\u4e86Nb\u7eb3\u7c73\u7ebf\u4e2d\u76f8\u53d8\u3001\u5b6a\u751f\u548c\u4f4d\u9519\u8fd0\u52a8\u5f15\u53d1\u7684\u6676\u4f53\u53d6\u5411\u53d8\u5316\u8fc7\u7a0b\uff0c\u53c8\u4ece\u53d6\u5411\u8f6c\u53d8\u5165\u624b\u8fdb\u4e00\u6b65\u8ba8\u8bba\u4e86\u5f71\u54cd\u53d8\u5f62\u673a\u5236\u8f6c\u53d8\u7684\u6f5c\u5728\u56e0\u7d20\uff0c\u4e3aBCC\u91d1\u5c5e\u7eb3\u7c73\u7ebf\u7684\u529b\u5b66\u6027\u80fd\u4f18\u5316\u53ca\u5e94\u7528\u63d0\u4f9b\u4e86\u65b0\u7684\u5b9e\u9a8c\u53c2\u8003\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1ahttp:\/\/advances.sciencemag.org\/content\/4\/7\/eaas8850<\/p>\n

\u672c\u6587\u7531\u738b\u6c5f\u4f1f\u56e2\u961f\u4f9b\u7a3f\uff0c\u6750\u6599\u4eba\u6574\u7406\u7f16\u8f91\u3002<\/p>\n

\u6b22\u8fce\u5927\u5bb6\u5230\u6750\u6599\u4eba\u5ba3\u4f20\u79d1\u6280\u6210\u679c\u5e76\u5bf9\u6587\u732e\u8fdb\u884c\u6df1\u5165\u89e3\u8bfb\uff0c\u6295\u7a3f\u90ae\u7bb1tougao@cailiaoren.com\u3002<\/p>\n

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