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class="ss"><div><span>导读： </span>风力发电机核心组件之一是永磁体，永磁体需要使用大量稀土金属，稀土金属价值昂贵，而且其供应主要由中国提供，而中国曾限制其出口，因此存在供应安全的担忧。</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><div> 风力发电机核心组件之一是永磁体，永磁体需要使用大量稀土金属，稀土金属价值昂贵，而且其供应主要由中国提供，而中国曾限制其出口，因此存在供应安全的担忧。现在，荷兰的<a href="http://material.oecr.com" target="_blank" class="relatedlink">材料</a>科学家 Marc Dhalle 首次尝试用高温超导体去制造永磁体，使用超导磁体的风力涡轮机在功率相同的情况下，重量和体积只有普通风力涡轮机的一半。</div><div><br></div><div> 被称为 EcoSwing 的项目得到了欧盟的资助。新风力发电机直径四米，安装在丹麦一座 88 米高的 3.6MW 涡轮机内。</div><div><br></div><div> 它使用的超导材料是 GdBaCuO（gadolinium–barium–copper oxide，钆钡氧化铜），其中钆的价格是 $18.70/kg，相比之下传统涡轮机使用的三氧化二钕价格是 $45.50/kg。</div><div><br></div><div> 它使用的制冷机能冷却到 –240°C。Dhalle 称新涡轮机采用了保守设计，下个版本将是一个更精简的原型。</div><div><br></div><div><p style="text-align: center;"><a 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<dd>怎么才能在这里发布信息呢？</dd> </dl><a name="comment_anchor_20688"></a> <dl id="comment_20688_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(20688, '7285');">引用</a> </span> <a href="http://club.oecr.com/space-uid-95502.html" class="xi2 xw1" c="1">d琨术</a> <span class="xg1 xw0">2018-11-26 20:08</span> </dt> <dd>占位编辑</dd> </dl><a name="comment_anchor_20683"></a> <dl id="comment_20683_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(20683, '7285');">引用</a> </span> <a href="http://club.oecr.com/space-uid-72200.html" class="xi2 xw1" c="1">xujianida</a> <span class="xg1 xw0">2018-11-26 17:38</span> </dt> <dd>确实不错，顶先</dd> </dl><a name="comment_anchor_20668"></a> <dl id="comment_20668_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(20668, '7285');">引用</a> </span> <a 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