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style="font-size:16px;">C的添加量寚w‡‘属陶ç“ïLš„¾l„织和性能有较大的影响。C含量˜q‡å°‘¾l„织中会出现ɳ相对性能有害åQŒä½†C含量˜q‡å¤š¾l„织中又会出现游¼›ÀL€çš„矛_¢¨åQŒåŒæ ·é™ä½Žææ–™çš„性能。同时C含量的多ž®‘还可以控制W和Ti在粘¾l“相中溶解量的大ž®ã€?  </span> </p> <span style="font-size:16px;">在金属陶瓷中æ·ÕdŠ WC可以改善润湿性和烧结性能åQŒæ­¤å¤–还有报道说ž®†WC引入Ti(C,N)-Ni¾pȝ»Ÿå¯ä»¥æé«˜éŸ§æ€§å’ŒæŠ‘制晶粒长大速度ã€?/span><br /> <span style="font-size:16px;">加入Mo或者Mo2C可以显著改善Ni对TiC的润湿性,Mo2C存在于硬质相的包覆层中,从而避免了¼‹¬è´¨ç›¸çš„直接接触和聚集长大,从而细化了晶粒åQŒåŒæ—¶åœ¨ä¸€å®šèŒƒå›´å†…增加Mo的含量可以提高材料的断裂韧性ã€?/span><br /> <span style="font-size:16px;">在TiC-Ni-Mo金属陶瓷中,Ni含量的媄响与Co对WC-Co合金的媄响相伹{€‚金属陶ç“ïLš„抗弯强度随着Ni含量的增加而升高,¼‹¬åº¦åˆ™ä¸‹é™ã€‚文献研½I¶äº†åœ¨ä¿æŒç²˜¾l“相总量不便的情况下åQŒä¸åŒNi/Co比对材料性能的媄响。结果发现随着 Ni/Co比的减小材料¼‹¬åº¦å‡é«˜è€ŒæŠ—弯强度下降ã€?/span><br /> <span style="font-size:16px;">在TiC-Mo-Ni¾p»é‡‘属陶瓷中æ·ÕdŠ TiN可以明显的细化硬质相的颗¾_’,提高材料的耐磨性,抗氧化能力和热导率。但是当TiN的添加量­‘…过一定程度以后会使材料硬质相的包覆层变薄åQŒæœ‰çš„包覆层变得不完æ•ß_¼ŒåŒæ—¶å‡ºçŽ°æ¸¸ç¦»çš„TiN,反而导致综合机械性能的下降ã€?/span><br /> <span style="font-size:16px;">TaC, NbC的加入能够提高金属陶瓷刀å…ïLš„断箋切削性能åQŒè€ŒVC的作用是抑制晶粒的长大。但是它们的加入会ä‹É¾_˜ç»“相对TiC的润湿性降低,从而导致材料强度的下降ã€?/span><br /> <span style="font-size:16px;">此外适量的加入稀土元素可以净化界面,¾l†åŒ–Ti(C,N)基金属陶ç“ïLš„¼‹¬è´¨ç›”R¢—¾_’,提高材料的致密度åQŒæŠ—弯强度,¼‹¬åº¦å’Œæ–­è£‚韧性ã€?/span><br /></p> </div> <div class="pagess"> <ul class="blj"><div class="blj">上一æ?<a href="122.html">‹¹…谈防震刀杆的性能与应ç”?/a></div> <div class="blj">下一æ?<a href="120.html">选购钨钢合金长条的注意事™å?/a></div> </ul> </div> <div class="info_key">相关标签åQ?/div> </div> <div class="clear"></div> <div class="cateslist"> <dl> <dt>相关产品</dt> <dd> <div class="img"> <a href="/supply/52.html" title="钨钢合金" rel="nofollow"><img src="//cmsimgshow.zhuchao.cc/24956/20171221032137.jpg?path=www.baqter.com/uploads/cp/20171221032137.jpg" title="钨钢合金" alt="钨钢合金"/></a> </div> <div class="txt"> <a href="/supply/52.html" title="钨钢合金" rel="nofollow">钨钢合金</a> </div> </dd> <dd> <div class="img"> <a href="/supply/51.html" title="¼‹¬è´¨åˆé‡‘耐磨零äšg" rel="nofollow"><img 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