{"id":2893,"date":"2014-03-26T08:05:00","date_gmt":"2014-03-26T00:05:00","guid":{"rendered":"\/\/m.letratesoro.com\/?p=2893"},"modified":"2023-02-16T18:31:43","modified_gmt":"2023-02-16T10:31:43","slug":"pb-sn-phase-diagram","status":"publish","type":"post","link":"\/\/m.letratesoro.com\/2014\/03\/pb-sn-phase-diagram\/","title":{"rendered":"\u932b\u925b\u710a\u6599\u7684\u4e8c\u5143\u91d1\u76f8\u5716\u89e3\u91cb"},"content":{"rendered":"
<\/p>\n
\u96d6\u7136\u7121\u925b\u932b\u818f(\u710a\u932b)\u5df2\u7d93\u662f\u73fe\u4ee3\u74b0\u4fdd\u96fb\u5b50\u79d1\u6280\u7684\u4e3b\u6d41\u4e86\uff0c\u4f46\u662f\u57fa\u65bc\u4fe1\u8cf4\u5ea6\u7684\u8003\u91cf\uff0c\u6c7d\u8eca\u696d\u8207\u8ecd\u7528\u96fb\u5b50\u90fd\u9084\u6709\u5f88\u591a\u7522\u54c1\u9084\u5728\u4f7f\u7528\u542b\u925b\u7684\u710a\u932b\uff0c\u56e0\u70ba\u300c\u542b\u925b\u710a\u932b\u300d\u7684\u710a\u63a5\u5f37\u5ea6\u6bd4\u300c\u7121\u925b\u710a\u932b(lead free)\u300d\u9ad8\u51fa\u8a31\u591a\u3002<\/font><\/p>\n \u6709\u925b\u932b\u818f\u7684\u4e3b\u8981\u6210\u4efd\u4ee5\u932b(Sn)\u53ca\u925b(Pd)\u70ba\u4e3b\uff0c\u5176\u4ed6\u5fae\u91cf\u6210\u4efd\u9084\u6709\u9280\u3001\u924d\u3001\u92a6\u7b49\u91d1\u5c6c\uff0c\u5404\u6709\u5176\u4e0d\u540c\u7684\u7194\u9ede\uff08M.P.\uff09\uff0c\u4e0d\u904e\u672c\u6587\u5148\u5047\u8a2d\u9019\u4e9b\u5fae\u91cf\u7684\u5176\u4ed6\u91d1\u5c6c\u6210\u5206\u4e0d\u6703\u5f71\u97ff\u5230\u932b\u818f\u7684\u7279\u6027\uff0c\u6240\u4ee5\u6211\u5011\u53ef\u4ee5\u5148\u7528\u932b\u925b\u7684\u4e8c\u5143\u76f8\u5716<\/font><\/strong>\u4f86\u89e3\u91cb\u932b\u818f\u7684\u7279\u6027\uff0c\u56e0\u70ba\u4e09\u5143\u4ee5\u4e0a\u7684\u76f8\u5716\u5be6\u5728\u662f\u592a\u8907\u96dc\u4e86\u3002<\/font><\/p>\n <\/p>\n \u800c\u4e14\u4e0d\u8ad6\u662f<\/font>\u710a\u6599\u6216\u662fIMC\uff0c\u5176\u7d44\u6210\u7684\u4efd\u5b50\u8d8a\u591a\uff0c\u5176\u7d50\u69cb\u4e5f\u5c31\u8d8a\u8907\u96dc\uff0c\u4e5f\u8d8a\u4e0d\u5bb9\u6613\u7ba1\u63a7\uff0c\u53ef\u9760\u5ea6\u4e5f\u8d8a\u5dee\u3002<\/font><\/strong><\/p>\n \u76f8\u95dc\u5ef6\u4f38\u95b1\u8b80\uff1a\u932b\u818f\u4e2d\u6dfb\u52a0\u9285\u9280\u92c5\u92bb\u924d\u92a6\u7b49\u5fae\u91cf\u91d1\u5c6c\u7684\u76ee\u7684\u70ba\u4f55\uff1f<\/a><\/font><\/font><\/p>\n \u5728\u89e3\u91cb<\/font><\/p>\n \u53c3\u8003\u4e00\u4e0b\u6587\u7ae0\u6700\u524d\u9762\u7684\u932b\u925b\u4e8c\u5143\u76f8\u5716\uff0c\u6a6b\u5750\u6a19\u8868\u793a\u932b\u925b\u7684\u91cd\u91cf\u767e\u5206\u6bd4(Wt%)\uff0c\u7e31\u5ea7\u6a19\u8868\u793a\u651d\u6c0f\u6eab\u5ea6(\u00b0C)\u3002<\/font><\/p>\n \u6211\u5011\u5148\u4f86\u770b\u9019\u5f35\u5716\u7684\u5e7e\u500b\u76f8\u5340(phase)\uff1a<\/font><\/p>\n \u53e6\u5916\uff0c\u9084\u6709\u5e7e\u689d\u6bb5(line)\u5fc5\u9808\u5148\u8aaa\u660e\uff1a<\/font><\/p>\n \u925b\u7684\u7194\u9ede\u70ba327\u00b0C\uff0c\u6240\u4ee5\u76f8\u5716\u7684\u5de6\u4e0a\u89d2\u5c31\u662f\u5f9e327\u00b0C\u958b\u59cb\u7684(100%\u7684\u300c\u925b\u300d\uff0cA\u9ede)\uff0c\u96a8\u8457\u932b\u925b\u91cd\u91cf\u6bd4\u7684\u542b\u925b\u91cf\u8d8a\u4f86\u8d8a\u5c11\uff0c\u710a\u932b\u91cf\u8d8a\u4f86\u8d8a\u591a\uff0c\u9019\u689d\u3010\u6db2\u5316\u7194\u9ede(Liquidus m.p.)\u3011\u7dda\u7684\u6eab\u5ea6\u4e5f\u8d8a\u4f86\u8d8a\u4f4e\uff0c\u7576\u932b\u925b\u91cd\u91cf\u6bd4\u4f86\u5230\u6700\u4f73\u7684Sn63\/Pb37\uff08\u5be6\u969b\u70baSn61.9\/Pb38.1\uff0c\u56e0\u70ba\u65e9\u671f\u6280\u8853\u91cf\u6e2c\u4e0d\u6e96\uff0c\u4ee5\u81f4\u9020\u6210\u8aa4\u5dee\uff09\uff0c\u5176\u6db2\u5316\u7194\u9ede\u4e5f\u9054\u5230\u6700\u4f4e\u7684183\u00b0C\uff0c\u5982\u679c\u7e7c\u7e8c\u518d\u589e\u52a0\u542b\u932b\u7684\u6bd4\u7387\uff0c\u5176\u6db2\u5316\u7194\u9ede\u6eab\u5ea6\u5c31\u5247\u53cd\u8f49\u4e0a\u5347\uff0c\u5230\u9054\u7d14\u932b\uff08100%\u7684\u300c\u932b\u300d\uff09\u6642\u7684232\u00b0C\u3002<\/font><\/p>\n \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\u7de8\u6392\u53ef\u80fd\u9020\u6210\u60a8\u95b1\u8b80\u7684\u4e0d\u4fbf\uff0c\u8acb\u898b\u8ad2\uff01\uff09<\/font><\/em><\/p>\n \u932b\u925b\u5408\u91d1\u710a\u6599\u9664\u4e8661.9\/38.1\u7684\u91cd\u91cf\u6bd4\u6709\u500b\u552f\u4e00\u7684\u3010\u5171\u56fa\u9ede(E\u9ede)\u3001\u5171\u7194\u9ede\u3001\u5171\u6676\u9ede\uff08Eutectic\uff09<\/font><\/strong>\u3011183\u00b0C\u4e4b\u5916\uff0c\u5176\u4ed6\u4e0d\u540c\u7684\u91cd\u91cf\u6bd4\u7686\u6703\u51fa\u73fe\u5169\u500b\u7194\u9ede\uff0c\u6eab\u5ea6\u8f03\u9ad8\u8005\u7a31\u70ba\u3010\u6db2\u5316\u7194\u9ede(Liquidus m.p.)<\/font><\/strong>\u3011\uff0c\u6eab\u5ea6\u8f03\u4f4e\u8005\u7a31\u70ba\u3010\u56fa\u5316\u7194\u9ede(Solidus m.p.)<\/font><\/strong>\u3011\u3002\u4ecb\u65bc\u5169\u7194\u9ede\u4e4b\u9593\u7684\u710a\u6599\u5247\u7a31\u4e4b\u70ba\u3010\u6f3f\u614b(pasty)<\/font><\/strong>\u3011\uff0c\u4e5f\u5c31\u662f\u56fa\u614b\u8207\u6db2\u614b\u5171\u5b58(co-exist)\u7684\u9ad8\u9ecf\u5ea6\u6d41\u9ad4\u3002\u6240\u8b02\u7684\u6f3f\u614b(pasty)\u5176\u5be6\u5c31\u6709\u9ede\u985e\u4f3c\u571f\u77f3\u6d41\u7684\u578b\u5f0f\uff0c\u56e0\u70ba\u5176\u4e2d\u53ef\u80fd\u662f\u932b\u5df2\u7d93\u8b8a\u6210\u6db2\u614b\u4f46\u662f\u925b\u9084\u662f\u56fa\u614b(\u03b1Pb+L)\uff0c\u6216\u662f\u525b\u597d\u76f8\u53cd(\u03b2Sn+L)\u3002 <\/font><\/p>\n \u81f3\u65bc\u70ba\u4ec0\u9ebc\u6211\u5011\u4e00\u5b9a\u5f97\u7528Sn63\/Pb37\u7684\u91cd\u91cf\u6bd4\u4f8b\uff0c\u9019\u662f\u56e0\u70ba\u7d14\u932b\u7684\u878d\u9ede\u9ad8\u9054232\u00b0C\uff0c\u4e0d\u5229\u7528\u65bc\u4e00\u822c\u7684PCB\u677f\u7d44\u88dd\u710a\u63a5\uff0c\u6216\u8005\u8aaa\u76ee\u524d\u7684\u96fb\u5b50\u96f6\u4ef6\u90fd\u7121\u6cd5\u9054\u5230\u9019\u6a23\u7684\u9ad8\u6eab\uff0c\u6240\u4ee5\u5fc5\u9808\u4ee5\u932b\u70ba\u4e3b\uff0c\u7136\u5f8c\u52a0\u5165\u5176\u4ed6\u5408\u91d1\u710a\u6599\u4f86\u964d\u4f4e\u5176\u7194\u9ede<\/font>\uff0c\u4ee5\u9054\u5230\u53ef\u4ee5\u91cf\u7522\u4e26\u7bc0\u7701\u80fd\u6e90\u7684\u4e3b\u8981\u76ee\u7684\uff0c\u4e5f\u53ef\u4ee5\u964d\u4f4e\u96fb\u5b50\u96f6\u4ef6\u8010\u6eab\u7684\u9580\u6abb\uff0c\u56e0\u70ba\u7d55\u5927\u90e8\u5206\u96fb\u5b50\u7522\u54c1\u7684\u4f7f\u7528\u8207\u5132\u5b58\u74b0\u5883\u90fd\u53ea\u6703\u5728-40\u00b0C\uff5e+70\u00b0C\u4e4b\u9593\u800c\u5df2\uff0c\u6240\u4ee5183\u00b0C\u7684\u7194\u9ede\u771f\u5df2\u7d93\u662f\u7dbd\u7dbd\u6709\u9918\u4e86\uff1b\u5176\u6b21\u8981\u76ee\u7684\u662f\u53ef\u4ee5\u6539\u5584\u710a\u9ede\u7684\u97cc\u5ea6(Toughness)\u8207\u5f37\u5ea6(Strength)<\/font>\u3002<\/font><\/p>\n \u4e00\u822c\u7684\u76f8\u5716\u90fd\u6703\u6709\u03b1\u3001\u03b2\u3001\u03b3\u7b49\u7b26\u865f\u4f86\u8868\u793a\u76f8\u5716\u4e2d\u7684\u56fa\u6eb6\u9ad4\uff0c\u672c\u932b\u925b\u76f8\u5716\u53ea\u6709\u4e8c\u5143\uff0c\u6240\u4ee5\u53ea\u7528\u5230\u03b1\u53ca\u03b2\u3002\u9019\u5f35\u76f8\u5716\u7684\u03b1\u6307\u7684\u662f\u5bcc\u925b(Pb)\u7684\u56fa\u6eb6\u9ad4\uff0c\u800c\u03b2\u5247\u662f\u5bcc\u932b(Sn)\u7684\u56fa\u6eb6\u9ad4\u3002<\/font><\/p>\n \uff08\u9019\u88e1\u7a0d\u5fae\u89e3\u91cb\u4e00\u4e0b\u4ec0\u9ebc\u662f\u6eb6\u8cea(solute)\u8207\u6eb6\u5291(solvent)\u3002\u4ee5\u9e7d\u5df4\u6eb6\u89e3\u5728\u6c34\u4e2d\u7576\u4f8b\u5b50\uff0c\u9e7d\u5df4\u70ba\u6eb6\u8cea\uff0c\u6c34\u70ba\u6eb6\u5291\uff0c\u5176\u5be6\u6eb6\u8cea\u8207\u6eb6\u5291\u53ea\u662f\u4e00\u500b\u76f8\u5c0d\u7684\u6982\u5ff5\uff0c\u7576\u9e7d\u5df4\u6bd4\u6c34\u9084\u8981\u4f86\u5f97\u591a\u7684\u6642\u5019\uff0c\u6c34\u5c31\u8b8a\u6210\u4e86\u6eb6\u8cea\uff0c\u800c\u9e7d\u5df4\u5c31\u8b8a\u6210\u4e86\u6eb6\u5291\u3002\u518d\u7528\u500b\u6bd4\u55bb\uff0c\u628a\u73bb\u7483\u73e0\u57cb\u5728\u6c99\u5b50\u88e1\uff0c\u6c99\u5b50\u5c31\u662f\u6eb6\u5291\uff0c\u800c\u73bb\u7483\u73e0\u5c31\u662f\u6eb6\u8cea\u3002\u90a3\u5982\u679c\u628a\u5c11\u91cf\u7684\u6c99\u5b50\u6492\u5728\u4e00\u5806\u73bb\u7483\u73e0\u4e4b\u9593\uff0c\u73bb\u7483\u73e0\u5c31\u8b8a\u6210\u4e86\u6eb6\u5291\uff0c\u800c\u6c99\u5b50\u5c31\u662f\u6eb6\u8cea\u3002\uff09<\/font><\/p>\n \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\u7de8\u6392\u53ef\u80fd\u9020\u6210\u60a8\u95b1\u8b80\u7684\u4e0d\u4fbf\uff0c\u8acb\u898b\u8ad2\uff01\uff09<\/font><\/em><\/p>\n \u03b1Pb\u76f8\u5340(CBA)\u70ba\u5bcc\u925b\u7684\u56fa\u6eb6\u9ad4\uff0c\u4f46\u662f\u932b\u6703\u6eb6\u89e3\u5728\u925b\u4e4b\u4e2d\uff0c\u932b\u8b8a\u6210\u4e86\u6eb6\u8cea\uff0c\u5728\u9019\u500b\u76f8\u5340\uff0c\u932b\u7684\u6eb6\u89e3\u5ea6\u6709\u5176\u4e0a\u9650\uff0c\u5f9eC\u9ede\u958b\u59cb\uff0c\u96a8\u8457\u6eab\u5ea6\u7684\u4e0a\u5347(CB\u7dda)\u5230183\u00b0C\u6642(B\u9ede)\uff0c\u932b\u7684\u6eb6\u89e3\u5ea6\u4f86\u4e5f\u5230\u6700\u9ad8\u768418.3%\uff0c\u7576\u6eab\u5ea6\u7e7c\u7e8c\u5347\u9ad8(BA\u7dda)\uff0c\u932b\u7684\u6eb6\u89e3\u5ea6\u53cd\u800c\u6f38\u6f38\u8b8a\u5c11\u81f3\u96f6(A\u9ede)\u3002<\/font><\/p>\n \u03b2Sn\u76f8\u5340(HFG)\u5247\u70ba\u5bcc\u932b\u7684\u56fa\u6eb6\u9ad4\uff0c\u76f8\u5c0d\u7684\u925b\u5247\u6eb6\u89e3\u5728\u932b\u4e4b\u4e2d\uff0c\u925b\u8b8a\u6210\u4e86\u6eb6\u8cea\u3002\u5f9eH\u9ede\u958b\u59cb\uff0c\u96a8\u8457\u6eab\u5ea6\u7684\u4e0a\u5347(HG\u7dda)\u5230183\u00b0C\u6642(G\u9ede)\uff0c\u932b\u7684\u6eb6\u89e3\u5ea6\u4f86\u4e5f\u5230\u6700\u9ad8\u76842.23%(=100-97.8)\uff0c\u7576\u6eab\u5ea6\u7e7c\u7e8c\u5347\u9ad8(GF\u7dda)\uff0c\u932b\u7684\u6eb6\u89e3\u5ea6\u53cd\u800c\u6f38\u6f38\u8b8a\u5c11\u81f3\u96f6(F\u9ede)\u3002<\/font><\/p>\n\n
\n