{"id":6837,"date":"2018-03-07T08:19:00","date_gmt":"2018-03-07T00:19:00","guid":{"rendered":"\/\/m.letratesoro.com\/?p=6837"},"modified":"2023-02-14T10:03:02","modified_gmt":"2023-02-14T02:03:02","slug":"solder-crack-study-03","status":"publish","type":"post","link":"\/\/m.letratesoro.com\/2018\/03\/solder-crack-study-03\/","title":{"rendered":"\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216BGA\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(3)\uff1fIMC\u662f\u826f\u597d\u710a\u932b\u7d50\u679c\u7684\u5fc5\u8981\u4e4b\u60e1"},"content":{"rendered":"

\uff08\u5c0d\u65bc\u5927\u9678\u90a3\u4e9b\u76dc\u6587\u7db2\u7ad9\uff0c\u8907\u88fd\u8cbc\u4e0a\u672c\u7ad9\u6587\u7ae0\u5f8c\uff0c\u5c45\u7136\u9084\u6539\u6210\u81ea\u5df1\u516c\u53f8\u7684\u540d\u5b57\uff0c\u611f\u5230\u7121\u6065\uff01\u6587\u7ae0\u5167\u5bb9\u90e8\u4efd\u9632\u6b62\u8907\u88fd\u4f5c\u6cd5\u53ef\u80fd\u9020\u6210\u60a8\u95b1\u8b80\u7684\u4e0d\u4fbf\uff0c\u8acb\u898b\u8ad2\uff01\uff09<\/font><\/p>\n

<\/font><\/p>\n

\"IMC\u5c64\u662fPCA\u710a\u63a5\u7684\u5fc5\u7136\u7269\u537b\u4e5f\u662f\u710a\u932b\u7d50\u5408\u529b(bonding-force)\u6700\u8106\u5f31\u4e4b\u8655\"<\/font><\/p>\n

\u4e00\u822c\u4f86\u8aaa\uff0c\u4e00\u500b\u826f\u597d\u7684PCA\u710a\u932b\u5f62\u6210\uff0c\u5176\u710a\u932b\u7d50\u5408\u529b\u6700\u8106\u5f31\u7684\u5730\u65b9\u70baIMC(Inter-Metallic Compound)\u5c64\uff0cIMC\u5c64\u662f\u4e00\u7a2e\u91d1\u5c6c\u5316\u5408\u7269\uff0cIMC\u66f4\u70ba\u5f62\u6210\u826f\u597d\u710a\u63a5\u7684\u5fc5\u7136\u7269\uff0c\u5de5\u4f5c\u718a\u4e4b\u524d\u5c07IMC\u5c64\u5f62\u5bb9\u70ba\u7537\u5973\u7d50\u5408\u5f8c\u6240\u8a95\u4e0b\u7684\u5c0f\u5b69\uff0c\u9019\u88e1\u4f60\u53ef\u4ee5\u5c07\u9019\u5c64IMC\u60f3\u50cf\u6210\u9ecf\u5408\u78da\u584a\u8207\u78da\u584a\u4e4b\u9593\u7684\u6c34\u6ce5\u5c64\uff0c\u5b83\u8d77\u5230\u63a5\u5408\u5169\u7a2e\u4e0d\u540c\u78da\u584a\u7684\u76ee\u7684\uff0cIMC\u5c64\u4e5f\u662f\u4e00\u6a23\uff0c\u5982\u679c\u6c92\u6709\u9019\u5c64IMC\u5c31\u7121\u6cd5\u5728\u5169\u7a2e\u4e0d\u540c\u7684\u91d1\u5c6c\u9593\u5f62\u6210\u826f\u597d\u7684\u710a\u63a5\uff0c\u4f46\u9019\u5c64IMC\u537b\u4e5f\u662f\u6574\u500b\u710a\u63a5\u7d50\u69cb\u4e2d\u6700\u8106\u5f31\u7684\u5730\u65b9<\/font><\/strong>\uff0c\u60f3\u50cf\u78da\u7246\u53d7\u5230\u649e\u64ca\u6642\uff0c\u5927\u90e8\u5206\u6703\u5f9e\u6c34\u6ce5\u8655\u88c2\u958b\uff08\u65e9\u671f\u7684\u6c34\u6ce5\u78da\u7246\u5566\uff01\u73fe\u5728\u4f3c\u4e4e\u6709\u4e9b\u4e0d\u592a\u4e00\u6a23\uff09\uff0cIMC\u5c64\u4e5f\u662f\u4e00\u6a23\uff0c\u6240\u4ee5\u624d\u6703\u8aaa\u5982\u679c\u710a\u932b\u53d7\u5230\u61c9\u529b\u5f71\u97ff\u6642\uff0c\u4e00\u822c\u6703\u6700\u5148\u5f9eIMC\u5c64\u88c2\u958b\u3002<\/font><\/p>\n

IMC\u5c64\u662fPCA\u710a\u63a5\u7684\u5fc5\u7136\u7269\u537b\u4e5f\u662f\u710a\u932b\u7d50\u5408\u529b(bonding-force)\u6700\u8106\u5f31\u4e4b\u8655<\/strong><\/font><\/p>\n

\u5efa\u8b70\u4f60\u5148\u770b\u770b\u9019\u7bc7\u6587\u7ae0\u4ee5\u4e86\u89e3\u3010<\/font>\u4f55\u8b02IMC (Intermetallic Compound)\uff1fIMC\u8207PCB\u710a\u63a5\u5f37\u5ea6\u6709\u4f55\u95dc\u4fc2<\/font><\/a>\u3011\u3002<\/font><\/p>\n

<\/p>\n

\u90a3\u5982\u679c\u6c34\u6ce5\u5857\u5f97\u4e0d\u597d\u6216\u5857\u5f97\u4e0d\u5747\u52fb\uff0c\u6216\u662f\u90e8\u4efd\u6709\u5857\u5230\u3001\u90e8\u4efd\u672a\u5857\u5230\u6216\u662fIMC\u5c64\u9577\u5f97\u592a\u539a\u6216\u592a\u8584\uff0c\u662f\u4e0d\u662f\u6703\u5f71\u97ff\u78da\u584a\u9593\u7684\u7d50\u5408\u529b\u5462\uff1f\u7b54\u6848\u7576\u7136\u662f\u80af\u5b9a\u7684\u3002\u5982\u679c\u4f60\u5728\u5206\u6790\u4e0d\u826f\u73fe\u8c61\u6642\u767c\u73fe\u96f6\u4ef6\u710a\u932b\u65b7\u88c2\u767c\u751f\u662f\u5728IMC\u5c64\uff0c\u90a3\u4f60\u5c31\u5f97\u9032\u4e00\u6b65\u518d\u5206\u6790IMC\u5c64\u9577\u5f97\u597d\u4e0d\u597d\uff0c\u4e00\u822c\u5224\u65b7\u7684\u6a19\u6e96\u662f\u6aa2\u67e5IMC\u5c64\u662f\u5426\u751f\u9577\u9023\u7e8c\uff0c\u662f\u5426\u5747\u52fb\u5206\u4f48\uff0c\u901a\u5e38\u6703\u63a1\u7528\u5207\u7247(cross-section)\u4e26\u5229\u7528\u9ad8\u500d\u986f\u5fae\u93e1\u4f86\u52a0\u4ee5\u89c0\u5bdf\uff0c\u4e26\u8f14\u4ee5EDX\u67e5\u770b\u5143\u7d20\u5206\u6790\u505a\u9032\u4e00\u6b65\u5224\u65b7\u3002<\/font><\/font><\/p>\n

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\"\u81f3\u65bcIMC\u5c64\u9577\u5f97\u592a\u539a\u6216\u592a\u8584\"<\/font>\u81f3\u65bcIMC\u5c64\u9577\u5f97\u592a\u539a\u6216\u592a\u8584\uff0c\u96d6\u7136\u4e5f\u6703\u5f71\u97ff\u5230\u710a\u932b\u7d50\u5408\u529b\uff0c\u4f46\u9019\u5df2\u7d93\u8207SMT\u7684\u751f\u7522\u88fd\u7a0b\u6c92\u6709\u4e0d\u592a\u95dc\u4fc2\u4e86\uff0cSMT\u88fd\u7a0b\u57fa\u672c\u4e0a\u53ea\u8981\u78ba\u4fddIMC\u6709\u9577\u51fa\u4f86\u4e14\u9577\u5f97\u5747\u52fb\u5c31\u7b97\u5b8c\u6210\u4efb\u52d9\uff0c\u800c\u4e14IMC\u5c64\u6703\u96a8\u8457\u6642\u9593\u8207\u71b1\u91cf\u7684\u7d2f\u7a4d\u800c\u8d8a\u9577\u8d8a\u539a\uff0c\u7576IMC\u5c64\u9577\u5f97\u592a\u539a\u6642\u5f37\u5ea6\u53cd\u800c\u6703\u8b8a\u5dee\uff0c\u8b8a\u5f97\u5bb9\u6613\u8106\u88c2\uff0c\u9019\u5c31\u6709\u9ede\u50cf\u78da\u584a\u8207\u78da\u584a\u4e4b\u9593\u7684\u6c34\u6ce5\u4e00\u6a23\uff0c\u9069\u91cf\u7684\u6c34\u6ce5\u539a\u5ea6\u53ef\u4ee5\u5c07\u4e0d\u540c\u7684\u78da\u584a\u7dca\u5bc6\u7684\u7d50\u5408\u5728\u4e00\u8d77\uff0c\u4f46\u6c34\u6ce5\u5982\u679c\u592a\u539a\u53cd\u800c\u5bb9\u6613\u88ab\u5f9e\u6c34\u6ce5\u8655\u63a8\u958b\uff0c\u9019\u4e5f\u53ef\u4ee5\u8aaa\u660e\uff0c\u70ba\u4f55\u5927\u90e8\u5206\u7522\u54c1\u5728\u4f7f\u7528\u4e00\u6bb5\u9577\u6642\u9593\u5f8c\u5176\u4fe1\u8cf4\u5ea6\u6703\u8b8a\u5dee\u3002<\/font><\/p>\n

\u5de5\u4f5c\u718a\u5f8c\u4f86\u9084\u662f\u4e00\u76f4\u88ab\u8ffd\u554f\uff0c\u5230\u5e95IMC\u5c64\u61c9\u8a72\u8981\u9577\u5230\u591a\u539a\u624d\u662f\u7406\u60f3\u7684\u539a\u5ea6\uff1f\u5de5\u4f5c\u718a\u4ee5\u73fe\u5728\u7684\u9285\u932b\u6216\u9285\u93b3\u5316\u5408\u7269\u70ba\u4f8b\uff0c\u5176\u6700\u4f73\u539a\u5ea6\u61c9\u8a72\u8981\u843d\u57281~3um\uff0c\u4f46\u4e00\u822cIMC\u539a\u5ea6\u53ea\u8981\u57281~5um\u90fd\u662f\u53ef\u4ee5\u63a5\u53d7\u7684\u3002<\/font><\/p>\n

\u53e6\u5916\u4e00\u500bSMT\u88fd\u7a0b\u4e2d\u53ef\u80fd\u51fa\u73fe\u4e14\u5f71\u97ff\u710a\u932b\u5f37\u5ea6\u7684\u56e0\u7d20\u662f\u710a\u932b\u4e2d\u6b98\u7559\u6709\u6c23\u6ce1\u5b54\u6d1e(Void)<\/font><\/b>\uff0c\u9019\u4e9b\u5b54\u6d1e\u662f\u56e0\u70ba\u710a\u932b\u5728\u7194\u878d\u72c0\u614b\u6642\u7121\u6cd5\u53ca\u6642\u9003\u9038\u51fa\u710a\u932b\u7684\u7a7a\u6c23\u6216\u52a9\u710a\u5291\u7684\u63ee\u767c\u7269\uff0c\u7b49\u5230\u710a\u932b\u51b7\u537b\u5f8c\u88ab\u5305\u8986\u65bc\u5176\u4e2d\u6240\u5f62\u6210\u7684\u7a7a\u6d1e\uff0c\u5224\u65b7\u662f\u5426\u70ba\u5305\u98a8\u5b54\u6d1e\u6709\u5169\u500b\u975e\u5e38\u660e\u986f\u7684\u7279\u5fb5\uff1a<\/font><\/p>\n

    \n
  1. \n
    \u5b54\u6d1e\u7684\u5167\u8868\u9762\u5448\u73fe\u5149\u6ed1\u3002<\/font><\/div>\n<\/li>\n
  2. \n
    \u5b54\u6d1e\u5728\u710a\u932b\u4e2d\u5448\u73fe\u51fa\u5713\u5f62\u72c0\u3002<\/font><\/div>\n<\/li>\n<\/ol>\n

    \u5b54\u6d1e\u8d8a\u5927\u7576\u7136\u8d8a\u4e0d\u5229\u710a\u932b\u5f37\u5ea6\uff0c\u86c0\u7a7a\u7684\u6728\u982d\u600e\u9ebc\u9084\u80fd\u8010\u6298\uff0c\u4f46\u662f\u5b54\u6d1e\u53c8\u5f88\u96e3\u5728\u710a\u63a5\u904e\u7a0b\u4e2d\u88ab\u5b8c\u5168\u907f\u514d\uff0c\u5c24\u5176\u662f\u5c0d\u90a3\u4e9b\u9700\u8981\u5927\u91cf\u710a\u932b\u7684BGA\u6216QFN\u3001LGA\u7b49\u96f6\u4ef6\uff0c\u65e2\u7136\u76ee\u524d\u6280\u8853\u4e0d\u53ef\u884c\uff0c\u9000\u800c\u6c42\u5176\u6b21\uff0c\u90a3\u5c31\u898f\u5b9a\u4e00\u5b9a\u7684\u5b54\u6d1e\u6bd4\u7387\u4e0b\u662f\u53ef\u4ee5\u63a5\u53d7\u5c31\u5f97\u4e86\uff0c\u65e5\u5f8c\u6280\u8853\u9032\u6b65\u4e86\u6539\u898f\u683c\u5c31\u662f\u4e86\u3002\u4f9d\u64daIPC-7095B\u53caIPC-A-610D\u4e4b\u5f8c\u7248\u672c\u7684\u8981\u6c42\uff0cBGA\u932b\u7403\u7684\u7e3d\u5b54\u6d1e\u76f4\u5f91\u4e0d\u53ef\u4ee5\u8d85\u904e\u932b\u7403\u7e3d\u76f4\u5f91\u768425%\uff0c\u5927\u90e8\u5206\u96fb\u5b50\u5ee0\u4e5f\u90fd\u4ee5\u6b64\u4f86\u5224\u5b9a\u5b54\u6d1e\u7684\u53ef\u5141\u6536\u7387\u3002\u65e5\u5f8c\u5982\u6709\u4fee\u6539\u8acb\u4ee5\u6700\u65b0\u7684\u898f\u683c\u70ba\u6e96\u3002<\/font><\/p>\n

    \"BGA\u7684\u5b54\u6d1e\"<\/font>\"BGA\u5b54\u6d1e<\/p>\n

    \u6240\u4ee5\uff0c\u53ea\u6709\u7576\u767c\u73feIMC\u9577\u4e0d\u51fa\u4f86\u6216IMC\u8207\u754c\u9762\u9593\u6709\u5206\u4f48\u4e0d\u5747\u52fb\u73fe\u8c61\u767c\u751f\u6642\u624d\u8ddfSMT\u7684\u54c1\u8cea\u6216\u88fd\u7a0b\u6709\u6b63\u76f8\u95dc\u6027\u3002\u9019\u500b\u76f8\u95dc\u6027\u53ef\u80fd\u8ddf\u56de\u710a\u7210(reflow oven)\u7684\u71b1\u91cf\u4e0d\u8db3\u6709\u95dc\uff0c\u4e5f\u53ef\u80fd\u8ddfPCB\u7684\u8868\u9762\u8655\u7406\u4e0d\u4f73\u6216\u5132\u5b58\u74b0\u5883\u6709\u95dc\uff0c\u4e5f\u53ef\u80fd\u8207\u96fb\u5b50\u96f6\u4ef6\u7684\u54c1\u8cea\u76f8\u95dc\uff0c\u9019\u500b\u9700\u8981\u5f97\u5230\u66f4\u591a\u7684\u5207\u7247\u8207\u5143\u7d20\u5206\u6790\u624d\u80fd\u5224\u65b7\u3002<\/font><\/p>\n

    \u73fe\u5728\u4f60\u61c9\u8a72\u4e5f\u662f\u5c08\u5bb6\u4e86\uff0c\u4e0b\u6b21\u8981\u662f\u518d\u78b0\u5230\u6709\u710a\u932b\u7834\u88c2\u7684\u554f\u984c\uff0c\u8acb\u4e0d\u8981\u99ac\u4e0a\u5c31\u8dd1\u4f86\u8cea\u8a62\u5de5\u4f5c\u718a\u4e86\uff0c\u8acb\u81ea\u5df1\u5148\u7a0d\u5fae\u505a\u9ede\u529f\u8ab2\u3002 <\/font><\/p>\n


    \n

    \u300c\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d\u300d\u7cfb\u5217\u6587\u7ae0\u5217\u8868\uff1a<\/strong><\/font><\/p>\n