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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=62" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=54876&size=small" /></div> <h1 class="ph">国外开发新工艺提高激光3D打印贵金属质量 </h1> <p class="xg1"> 时间：2017-3-23 09:57<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(652)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=5524&idtype=aid" title="查看全部评论"><em id="_commentnum">5</em></a></p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=62" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>德国贵金属与金属化学FEM研究所近日研究出了一种新方法，可以显著提高通过选择性激光熔融（SLM）技术3D打印黄金的质量。</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> 德国贵金属与金属化学FEM研究所近日研究出了一种新方法，可以显著提高通过选择性<a href="http://laser.oecr.com" target="_blank" class="relatedlink">激光</a>熔融（SLM）技术3D打印黄金的质量。</div><div><br></div><div><div style="line-height: 25.2px;"><b style="line-height: 25.2px; color: rgb(128, 128, 0); font-size: large;"> 推荐阅读</b></div><b style="line-height: 25.2px;"><font size="3"><font color="#800080"> </font><font color="#f000f0"> </font><a href="http://www.oecr.com/article-5320.html"><font color="#800080">最小的雄鸡贺卡：3D纳米激光直写制作全球</font></a><br></font></b><div style="line-height: 25.2px;"><b style="line-height: 1.8em;"><font color="#800080" size="3"> <a href="http://www.oecr.com/article-5332.html"><font color="#800080">我国首例！惊艳全校的3D打印航拍无人飞机</font></a></font></b></div></div><div><br></div><div> <b><font color="#f00000">此法可以为3D打印首饰、手表，甚至以黄金作导体的<a href="http://electronic.oecr.com" target="_blank" class="relatedlink">电子</a><a href="http://b.oecr.com/sell" target="_blank" class="relatedlink">产品</a>提供更多的设计灵活性。</font></b></div><div><br></div><div> SLM技术目前已经可以轻松打印钛、铝或钢合金了，但却依然“不太擅长”对付金、银，以及它们的合金等贵金属。</div><div><br></div><div> 这主要是因为这类金属具有较高的反射率和导热性。不过，FEM研究所却找到了有效的解决办法，就是将这些贵金属与其它金属混合形成合金。但这类金属必须符合一定的条件才行，比如硬度合适，混合后不会明显改变黄金的颜色。</div><div><br></div><div><p style="text-align: center;"><a href="data/attachment/portal/201703/23/095635r8hkchz6ppk2c0mh.jpg" target="_blank"><img src="data/attachment/portal/201703/23/095635r8hkchz6ppk2c0mh.jpg"></a></p></div><div><br></div><div> 实验中，研究者们尝试的是将金与铁和锗混合。而通过多次试验，他们发现Ge001和Fe003最为合适（上图中b和c），因为这两种合金中的铁和锗都被氧化了，而这可以降低合金的反光率。值得一提的是，他们用到的3D打印机是ConceptLaser的MLabRLaserCUSING。</div><div><br></div><div> <b>此外，研究者们还得出了这两种合金的最佳打印参数：</b></div><div><br></div><div> ·最佳粉末尺寸：5-30微米</div><div><br></div><div> ·最佳激光速度：200-450毫米/秒</div><div><br></div><div> ·热处理的降低孔隙率：3-4%-0.7%</div><div><br></div><div> 虽然现在，能直接打印贵金属并且质量较好的激光烧结3D打印机已经出现了（比如意大利Sisma公司在2016年推出的MysintJ），但FEM研究所的这项研究仍不失为一种可行的解决方案。相信只要最终能够商业化，它必定可以加速变革3D打印技术在珠宝行业的应用方式。</div><div><br></div><div><p style="text-align: center;"><a href="data/attachment/portal/201703/23/095649p8od11fxmqk1gppz.jpg" target="_blank"><img src="data/attachment/portal/201703/23/095649p8od11fxmqk1gppz.jpg"></a></p><p style="text-align: center;"><br></p><p style="text-align: center;"><span style="line-height: 25.2px;">欢迎关注光电<a href="http://news.oecr.com" target="_blank" class="relatedlink">资讯</a>微信公众号，每天将由光电工程师<a href="http://club.oecr.com" target="_blank" class="relatedlink">社区</a>网站(oecr.com)编辑团队为您精选行业动态，科技资讯，技术解析，光电<a href="http://www.oecr.com/portal.php?mod=list&catid=62" target="_blank" class="relatedlink">科普</a>等精彩内容，欢迎交换友情链接</span><span style="line-height: 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