ÔÚÖÚ¶àÑо¿µÄ´ß»¯ÎöÇâµç¼«²ÄÁÏÖУ¬Ni-MoºÏ½ðÊÇ´ó¼Ò¹«ÈϵÄ×îÓÐÏ£ÍûʵÏÖ¹¤ÒµÓ¦ÓõÄÎöÇâ´ß»¯²ÄÁÏÖ®Ò»£Û1£Ý¡£µç³Á»ý·¨ÖƱ¸Ni-MoºÏ½ðÊÇÄ¿Ç°³£ÓõÄÖƱ¸·½·¨£¬¼ò±ãÒ×ÐУ¬Ôì¼ÛµÍÁ®£¬´Ó¾­¼ÃÒâÒåÉÏÀ´½²¾ßÓкÜÃ÷ÏÔµÄÓÅÊÆ¡£Mo²»Äܵ¥¶À´ÓË®ÈÜÒºÖгÁ»ý³öÀ´£¬µ«ÄÜͬÌúϵԪËØ(Fe£¬Co£¬Ni)½øÐÐÓÕµ¼¹²³Á»ý¡£


ÔÚ´«Í³µÄÖ±Á÷µç¶ÆÖУ¬Òõ¼«±íÃ渽½üÒº²ãÖеĽðÊôÀë×Ó²»¶Ï±»³Á»ý£¬²»¿É±ÜÃâµØ»áÒýÆðŨ²î¼«»¯ºÍÎöÇâµÈ¸±·´Ó¦¡£Âö³åµç¶ÆÄÜ¿Ë·þÖ±Á÷µç¶ÆµÄ²»×㣬Âö³å¿í¶È(¼´µ¼Í¨Ê±¼ä)ºÜ¶Ì£¬·åÖµµçÁ÷ºÜ´ó£¬ÔÚµ¼Í¨ÆÚ¼äÂö³åµçÁ÷Ãܶȷdz£´ó£¬Ê¹½ðÊôÀë×Ó´¦ÔÚÖ±Á÷µç¶ÆʱʵÏÖ²»Á˵ļ«¸ß¹ýµçÊÆϳÁ»ý£¬Æä½á¹û²»½ö¿ÉÒÔ¸ÄÉƶƲãµÄÐÔÖÊ£¬»¹¿ÉÒÔ½µµÍÎöÇâµÈ¸±·´Ó¦ËùÕ¼µÄ±ÈÀý£Û2£Ý¡£±¾ÎÄ·Ö±ð²ÉÓÃÖ±Á÷µç³Á»ý·¨ºÍÂö³åµç³Á»ý·¨ÖƱ¸³öÁ˸ߴ߻¯»îÐÔµÄNi£­MoºÏ½ðÒõ¼«£¬Í¨¹ýµç»¯Ñ§²âÊԵõ½·´Ó¦µÄ¶¯Á¦Ñ§²ÎÊý£¬±È½ÏÆä¸÷×ÔµÄÎöÇâÐÔÄÜ£¬²¢Í¨¹ýSEM£¬EDX¼°XRDµÈ±íÕ÷ÊֶηÖÎöÁ˲»Í¬µç¼«ÎöÇâÐÔÄÜÓÅÁÓµÄÔ­Òò¡£


1ʵÑ鲿·Ö


1.1µç¼«µÄÖƱ¸


µç¼«ÖƱ¸Á÷³ÌΪ:ÄøƬ¡ú90¡æÈȼî³ýÓÍ30 min¡úÈÈˮϴ¡úÀäˮϴ¡úÇ¿Ëá½þ×Õ30 min¡úˮϴ¡úÈõËá½þ×Õ3 min¡úˮϴ¡úµç³Á»ý¡£¸ù¾Ýµ¥ÒòËØÃþË÷ʵÑéÒÔ¼°Õý½»ÊÔÑ飬ѡÔñÒÔϹ¤ÒÕÌõ¼þÀ´ÖƱ¸±¾ÊµÑéÖеÄNi-MoºÏ½ðµç¼«£¬Èç±í1Ëùʾ¡£

±í1µç¼«µÄÖƱ¸¹¤ÒÕÌõ¼þ


1.2µç»¯Ñ§²âÁ¿


²ÉÓÃÈýµç¼«ÏµÍ³¶¯µçλɨÃè²â¶¨µç¼«µÄÒõ¼«¼«»¯ÇúÏß¡£µç½âҺΪ30%(wt)µÄÇâÑõ»¯¼ØÈÜÒº£¬É¨ÃèËÙ¶È10 Vs£­1¡£·Ö±ðÒÔÂö³åµç³Á»ýºÍÖ±Á÷µç³Á»ýÖƱ¸µÄNi-MoºÏ½ðµç¼«Îª¹¤×÷µç¼«£¬¸¨Öúµç¼«²ÉÓôóÃæ»ý²¬Íø£¬×ÔÖÆHg/HgOµç¼«Îª²Î±Èµç¼«¡£ËùÓõIJâÊÔÒÇÆ÷ΪÃÀ¹úEG/G¹«Ë¾Éú²úµÄM273µç»¯Ñ§¹¤×÷Õ¾¡£


1.3ɨÃèµç¾µ·ÖÎö


²ÉÓÃHITACHI X-650ÐÍɨÃèµç×ÓÏÔ΢¾µ(SEM)·ÖÎö¶Æ²ãÐÎò£¬ÒÔ¼°²ÉÓÃɨÃèµç×ÓÏÔ΢¾µ¸½´øµÄÄÜÆ×ÒÇ(EDX)²â¶¨µç¼«±íÃæ¶Æ²ãÔªËØ×é³ÉºÍ¸÷ÔªËصÄÔ­×ӱȡ£


1.4 XÉäÏßÑÜÉä


XRD²»½öÄÜ·´Ó³ÎïÖֺͽᾧѧÐÅÏ¢£¬¶øÇÒ»¹ÄÜÀûÓÃÆä²â¶¨´ß»¯¼Á¾§Á£³ß´ç´óС¡£±¾ÊµÑéÖвÉÓÃRIGAKU¹«Ë¾Éú²úµÄD/max 2500 v/PCÐÍ×Ô¶¯XÉäÏßÑÜÉäÒǹ۲âÂö³åµç³Á»ýºÍÖ±Á÷µç³Á»ýÖƱ¸µÄNi-MoºÏ½ðµç¼«£¬²¢¸ù¾ÝScherrer¹«Ê½¼ÆË㾧Á£×ӵĴóС¡£


2½á¹ûÓëÌÖÂÛ


2.1µç»¯Ñ§ÎöÇâÐÔÄÜ


ͼ1ÊÇNi-MoºÏ½ðµç¼«ºÍNiµç¼«µÄÒõ¼«¼«»¯ÇúÏߺÍTafelÇúÏß¡£´ÓͼÖпÉÒÔ¿´µ½£¬²»ÂÛÊÇÖ±Á÷»¹ÊÇÂö³åµç³Á»ý£¬Ni-MoºÏ½ðµç¼«µÄÎöÇâÐÔÄܶ¼Ô¶Ô¶ÓÅÓÚNiµç¼«£¬¶øÂö³åµç³Á»ýµÃµ½µÄNi-MoºÏ½ðµç¼«ÓÖÓÅÓÚÖ±Á÷µç³Á»ý¡£ÓÉTafelÇúÏߵõ½µÄ25¡æϸ÷µç¼«ÔÚ30%(wt)K0HÈÜÒºÖеÄÎöÇ⶯Á¦Ñ§²ÎÊý¼û±í2¡£

±í2²»Í¬µç¼«µÄÎöÇ⶯Á¦Ñ§²ÎÊý

ͼ1²»Í¬µç¼«µÄÒõ¼«¼«»¯ÇúÏߺÍTafelÇúÏß


´Ó±í2¿ÉÒÔ¿´³ö£¬3Öֵ缫·´Ó¦µÄ´«µÝϵÊý¦ÁÏà²î²»´ó£¬µ«Êǽ»»»µçÁ÷ÃܶÈi0²î¾àÈ´ºÜ´ó£¬ÆäÖÐÖ±Á÷Ni-MoºÏ½ðµç¼«µÄi0ÊÇNiµç¼«µÄ2±¶£¬¶øÂö³åNi-MoºÏ½ðµç¼«µÄi0ÊÇÖ±Á÷Ni-MoºÏ½ðµç¼«µÄ3±¶¶à£¬ÊÇNiµç¼«µÄ6±¶¶à¡£½»»»µçÁ÷ÃܶÈi0ÊÇϵͳ¶¯Ì¬ÐÔÖÊ(¼´·´Ó¦ËÙ¶È)µÄ·´Ó³£Û3£Ý£¬ÔÚ¶Ô³ÆϵÊý¦ÁÏà²î²»´óµÄÇé¿öÏ£¬i0Ô½´ó·´Ó¦Ô½ÈÝÒ×½øÐУ¬Æä¹ýµçλ¦ÇҲԽС¡£


±í2ÖÐËùÁгöµÄ¹ýµçλ¦ÇÊÇÔÚµçÁ÷ÃܶÈi=300 mA¡¤cm£­2ʱÓɼ«»¯ÇúÏߵõ½µÄ¡£¿ÉÒÔ¿´³ö£¬Ö±Á÷Ni-MoºÏ½ðµç¼«ÔÚµçÁ÷ÃܶÈΪ300 mA¡¤cm£­2ʱ±ÈNiµç¼«½µµÍ182 mV£¬¶øÂö³åNi-MoºÏ½ðµç¼«±ÈÖ±Á÷Çé¿öÏÂÓÖ½µµÍÁË53 mV¡£ÕâÒ»½áÂÛºÍÉÏÃæµÄÎöÇ⶯Á¦Ñ§²ÎÊýµÄ·ÖÎö½á¹ûÎǺÏ¡£ÓÉ´Ë¿´³öNi-MoºÏ½ðµç¼«ÔÚ½µµÍÄܺķ½ÃæÓÐ׎ϴóµÄÓÅÊÆ£¬¶øÂö³åµç³Á»ýÖƱ¸Ni-MoºÏ½ðµç¼«¿ÉÒÔ×÷ΪÄøîâºÏ½ðµç¼«Ñо¿ÖеÄÒ»¸öÖØÒª·½Ïò¡£


2.2ÐÎò¼°³É·Ö·ÖÎö


ͼ2ÊÇÂö³åµç³Á»ýºÍÖ±Á÷µç³Á»ýÖƱ¸³öµÄNi-MoºÏ½ðµç¼«µÄɨÃèµç¾µÍ¼¡£´ÓͼÖпÉÒÔ¿´µ½£¬Âö³åµç³Á»ýµÃµ½µÄNi-MoºÏ½ðµÄ¾§Á£±ÈÖ±Á÷µç³Á»ý¸ü¼ÓϸС£¬ÇÒ±íÃæµÄ¿×¶´´ó´ó¼õÉÙ¡£ÔÚÂö³åµç³Á»ýÖУ¬Òõ¼«±íÃæȱÉٵĽðÊôÀë×ÓÄܼ°Ê±´ÓÈÜÒºÖеõ½²¹³ä£¬À©É¢²ã»ù±¾±»Ïû³ý£Û4£Ý£¬¶øʹµç½âÒºÖнðÊôÀë×ÓŨ¶ÈÇ÷ÓÚÒ»Ö£¬´Ó¶ø¸ÄÉÆÁ˶ƲãÖÊÁ¿¡£

ͼ2 Ni-MoºÏ½ðµç¼«µÄɨÃèµç¾µÍ¼


±í3ÊÇÄÜÆ×ÒDzâµÃµÄ¶Æ²ãÔªËØ×é³ÉµÄÖÊÁ¿°Ù·Ö±È¡£ÓɱíÖпÉÒÔ¿´µ½£¬Âö³åµç³Á»ýµÃµ½µÄNi-MoºÏ½ð¶Æ²ãÖеÄMoÔªËغ¬Á¿±ÈÖ±Á÷µç³Á»ýÒª¸ß£¬¶øÄøîâºÏ½ð¶Æ²ãµÄÎöÇâÐÔÄÜÔÚÒ»¶¨³Ì¶ÈÉÏÊÇËæ×ÅîâÔªËغ¬Á¿µÄÔö¼Ó¶øÌá¸ßµÄ£¬ËùÒÔ˵¶Æ²ãÖиßMoÔªËغ¬Á¿ÊÇÂö³åµç³Á»ýÄܽµµÍÎöÇâ¹ýµçλµÄÖØÒªÔ­Òò¡£


2.3 XRD·ÖÎö


ͼ3Ϊ²»Í¬µç¼«Ê±µÄXRDÑÜÉäÆ×ͼ¡£´ÓXRDͼ¿ÉÒÔ¿´³ö£¬Ni-MoºÏ½ð¶Æ²ãµÄÑÜÉäÇúÏßÓëNiµÄÍêÈ«²»Í¬£¬ËµÃ÷Ni-MoºÏ½ðµç³Á»ý¹ý³ÌÖÐÐγÉÁ˲»Í¬ÓÚNiµÄÎïÏà½á¹¹¡£¶Ô±ÈÖ±Á÷µç³Á»ýºÍÂö³åµç³Á»ýNi-MoºÏ½ð¶Æ²ã¿ÉÒÔ·¢ÏÖ£¬Âö³åµç³Á»ýNi-MoºÏ½ðµÄXRDÑÜÉä·å¸ü½øÒ»²½¿í»¯£¬ËµÃ÷¶Æ²ãµÄ¾§Á£½øÒ»²½Ï¸»¯¡£ÓÉScherrer¹«Ê½µÃµ½¾§Á£³ß´ç´óС¼û±í4¡£

ͼ3²»Í¬µç¼«µÄXRDÑÜÉäÆ×ͼ

±í4²»Í¬µç¼«µÄ¾§Á£³ß´ç´óС


ÈýÕߵľ§Á£¾ùÊÇÄÉÃ×¼¶µÄ³ß´ç£¬µ«Ni-MoºÏ½ð¶Æ²ãÑÜÉä·åµÄ·åÐμȲ»Í¬ÓÚ¾§Ì¬½Ï¼âÈñµÄ·åÐΣ¬ÓÖÓбðÓڷǾ§Ì¬ºÏ½ðµÄ¡°ÂøÍ·¡±ÐΣÛ5£Ý£¬ËüÊǽéÓÚ¾§Ì¬Óë·Ç¾§Ì¬Ö®¼äµÄÒ»ÖֺϽ𣬳Æ֮ΪÄÉÃ×¾§Äø£­îâºÏ½ð£Û6£Ý¡£ÄÉÃ×¾§Á£Ï൱ϸС£¬µ¼Ö¾§½çºÍ¾§¸ñȱÏÝÔö¼Ó£¬¶ø¾§ÌåȱÏݺÍλ´í´¦µÄÔ­×Ó¾ßÓнϸߵÄÄÜÁ¿£¬¿ÉÊÓΪ·´Ó¦µÄ»îÐÔÖÐÐÄ£¬´Ó¶ø½µµÍÎöÇâ¹ýµçλ¡£


´Ó±í4¿É¿´µ½£¬Âö³åNi-MoºÏ½ðµÄ¾§Á£±ÈÖ±Á÷Ni-MoºÏ½ðСµÃ¶à£¬ËùÒÔ˵Âö³åµç³Á»ýNi-MoºÏ½ð¶Æ²ã¾ßÓиü¸ß±ÈÀýµÄ±íÃæ»îÐÔÔ­×Ó£¬¸üÓÐÀûÓÚ·´Ó¦ÎïÔÚÆä±íÃæÎü¸½£¬ÄܸüÓÐЧµØ½µµÍµç¼«±íÃæÇâÔ­×ÓµÄÎü¸½»î»¯ÄÜ£¬Òò´Ë±ÈÖ±Á÷Ni-MoºÏ½ð¶Æ²ã¾ßÓиü¸ßµÄÎöÇâ´ß»¯»îÐÔ¡£


3½áÓï


±¾ÎÄ·Ö±ð²ÉÓÃÖ±Á÷µç³Á»ý·¨ºÍÂö³åµç³Á»ý·¨ÖƱ¸³öÁ˸ߴ߻¯»îÐÔµÄNi-MoºÏ½ðµç¼«£¬Í¨¹ýÒõ¼«¼«»¯ÇúÏߵõ½ÁËÎöÇâ·´Ó¦µÄ¶¯Á¦Ñ§²ÎÊý£¬½«ËüÃÇÓëNiµç¼«½øÐжԱȷ¢ÏÖÂö³åNi-MoºÏ½ðµç¼«µÄ½»»»µçÁ÷ÃܶÈi0ÊÇÖ±Á÷Ni-MoºÏ½ðµç¼«µÄ3±¶¶à£¬ÊÇNiµç¼«µÄ6±¶¶à¡£¶øÔÚµçÁ÷ÃܶÈi=300 mA¡¤cm£­2ʱ£¬Âö³åNi-MoºÏ½ðµç¼«±ÈÖ±Á÷Çé¿öϽµµÍÁË53 mV£¬Niµç¼«½µµÍ235 mV¡£Í¨¹ýSEM£¬EDX¼°XRDµÈ±íÕ÷ÊֶζԲ»Í¬µç¼«½øÐзÖÎö·¢ÏÖ£¬Âö³åµç³Á»ýµÃµ½¶Æ²ãÖеÄMoÔªËغ¬Á¿¸ü¸ß£¬ÇÒÆä¶Æ²ã¾§Á£¸ü¼ÓϸС£¬³ÊÏÖÒ»ÖÖÄÉÃ×¾§Ì¬£¬ÕâЩ¶¼ÊÇÂö³åµç³Á»ýNi-MoºÏ½ðµç¼«¾ßÓиü¸ßÎöÇâ´ß»¯»îÐÔµÄÔ­Òò¡£