张碧楚,曾丽,忻贤贞,魏斌.加工参数设置对选择性激光熔积钴铬合金硬度的影响[J].口腔材料器械杂志,2015,24(4):173-176.
加工参数设置对选择性激光熔积钴铬合金硬度的影响
Effect of processing parameters on hardness of selective laser melting cobalt-chromium alloy
投稿时间:2015-03-30  修订日期:2015-07-29
DOI:
中文关键词:  加工参数  选择性激光熔积  钴铬合金  表面硬度
英文关键词:Processing parameter  Selective laser melting  Co-Cr alloy  Surface hardness
基金项目:上海市科学技术委员会资助(12441903001),国家重点基础研究发展计划项目(973项目,2012 CB910401)
作者单位E-mail
张碧楚 上海交通大学医学院附属第九人民医院口腔特需门诊, 口腔修复科, 上海市口腔医学重点实验室, 上海 200011  
曾丽 上海交通大学医学院附属第九人民医院口腔特需门诊, 口腔修复科, 上海市口腔医学重点实验室, 上海 200011  
忻贤贞 上海交通大学医学院附属第九人民医院口腔特需门诊, 口腔修复科, 上海市口腔医学重点实验室, 上海 200011  
魏斌 上海交通大学医学院附属第九人民医院口腔特需门诊, 口腔修复科, 上海市口腔医学重点实验室, 上海 200011 drweibin2003@126.com 
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中文摘要:
      目的 观测几种加工参数设置对选择性激光熔积(SLM)钴铬合金的表面形貌和表面维氏硬度的影响。方法 使用正交实验设计9组不同的加工参数,即激光功率为2500W、2750W、3000W,扫描速度为5mm/s、10mm/s、15mm/s,送粉速率为3r/min、4.5r/min、6r/min,制备9组选择性激光熔积钴铬合金试件,每组5个(直径10mm,厚度3mm),经抛光处理后分别进行扫描电镜观察和表面维氏硬度测试,采用SPSS16.0软件包进行数据处理。结果 9组不同加工参数制备下SLM钴铬合金试件的扫描电镜图像均呈现均匀而规则的细胞样结构;其平均表面维氏硬度均在345HV以上。结论 当加工参数设置在激光功率2500~3000W,扫描速度5~15mm/s,送粉速率3~6r/min范围内时, SLM钴铬合金具有较为理想的表面形貌和表面硬度,能适合临床应用需求。
英文摘要:
      Objective To investigate the effects of several processing parameters on surface morphology and surface hardness of cobalt-chromium(Co-Cr) alloy fabricated by selective laser melting(SLM).Methods Nine groups of selective laser melting Co-Cr alloy were fabricated by different processing parameters(laser power:2500W, 2750W, 3000W; scanning speed:5mm/s, 10mm/s, 15mm/s; power feeding rate:3r/min, 4.5r/min, 6r/min) by orthogonal experiment design, each group has five specimens(10mm diameter and 3mm thickness). The specimens' surface morphology was observed by a scanning electron microscope and their Vickers hardness was measured by micro-hardness tester. The data was analyzed with SPSS16.0 software package.Results The SEM images showed all selective laser melting Co-Cr alloy had a homogeneous and regular cellular structure and the mean surface Vickers hardness were all above 345HV.Conclusion When laser power is set at 2500-3000W, scanning speed is set by 5-15mm/s and power feeding rate is set by 3-6r/min, SLM Co-Cr alloy has both ideal surface property and surface hardness, which can meet the clinical demands.
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