杨腾,佟海云,郑毅,储爱民,董泽熙,李滔,赵玉萍

• 1:湖南科技大学材料科学与工程学院
• 2:内蒙古包钢钢联股份有限公司计量中心
• 3:湖南科技大学土木工程学院

摘要(Abstract)：

采用高能球磨-粉末冶金法制备了Al_2O_3/Cu多孔复合材料(A-C-M)。首先利用高能球磨法将Cu粉和Al_2O_3粉末均匀细化，然后将Al_2O_3/Cu复合粉末与造孔剂尿素均匀混合后，再将混合粉末冷压成型，最后通过溶脱-烧结工艺制得A-C-M。采用X射线衍射(XRD)和扫描电镜(SEM)对粉末原料和A-C-M的微观形貌进行表征分析，使用万能试验机对A-C-M进行压缩性能测试，探讨了尿素和Al_2O_3含量对A-C-M性能的影响。结果表明：高能球磨使Al_2O_3/Cu复合粉末的形貌由球状变为片状，复合粉末尺寸先减小后增大，在球磨4 h时获得最小平均粒径为25μm; A-C-M含有两种特征孔，100～300μm的大孔和1～10μm的微孔；随尿素含量的增加，孔的连通程度及复合材料的孔隙率逐渐增加，其压缩强度逐渐降低；随Al_2O_3含量的增加，A-C-M孔隙率逐渐增加，其压缩强度逐渐降低，当Al_2O_3含量为4 mass%时，A-C-M的压缩强度急剧下降。

关键词(KeyWords)： Al_2O_3/Cu多孔复合材料;高能球磨;微观形貌;压缩性能;尿素

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52174344);; 湖南省自然科学基金(2023JJ30222,2021JJ30250);; 湖南省大学生创业训练项目(S202210534024X)

作者(Author): 杨腾,佟海云,郑毅,储爱民,董泽熙,李滔,赵玉萍

DOI: 10.13289/j.issn.1009-6264.2023-0227

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