Y_2O_3对再生WC-8Co硬质合金组织的影响
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摘要
以锌熔回收WC-Co复合粉末为原料,采用常规硬质合金生产工艺制备出不同Y2O3含量的再生WC-8Co硬质合金。通过激光粒度分析、SEM及EDS等方法研究了粉末的粒度、再生合金的组织及Y2O3在再生合金中的分布。研究结果表明:Y2O3的添加量为0.4%时,Y2O3可以显著改善再生硬质合金的组织;当Y2O3添加量为1.5%时,其再生硬质合金发生了严重的Y2O3偏聚现象。Y2O3的添加量是影响再生WC-8Co硬质合金组织的重要因素。
The recycled WC-8Co cemented carbides with different Y2O3content were prepared by conventional method by zinc-fusion reclaimed WC-Co composite powder. The particle size of raw material,microstructure and component distribution of the recycled cemented carbides were studied by Laser Particle Sizer,SEM and EDS,respectively. The results showed that when the adding amount of Y2O3was 0. 4%,the Y2O3could improve the microstructure of recycled cemented carbides. When the adding amount of Y2O3was 1. 5%,a serious Y2O3segregation phenomenon appeared in recycled cemented carbide. In summary,the adding amount of Y2O3is a key factor that affects the microstructure of recycled WC-8Co cemented carbide.
The recycled WC-8Co cemented carbides with different Y2O3content were prepared by conventional method by zinc-fusion reclaimed WC-Co composite powder. The particle size of raw material,microstructure and component distribution of the recycled cemented carbides were studied by Laser Particle Sizer,SEM and EDS,respectively. The results showed that when the adding amount of Y2O3was 0. 4%,the Y2O3could improve the microstructure of recycled cemented carbides. When the adding amount of Y2O3was 1. 5%,a serious Y2O3segregation phenomenon appeared in recycled cemented carbide. In summary,the adding amount of Y2O3is a key factor that affects the microstructure of recycled WC-8Co cemented carbide.
引文
[1]刘秀庆,许素敏,王开群.WC-Co硬质合金废料的回收利用[J].有色金属,2003,55(3):59-61.
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[4]杨海林,周雪安,赵万军,等.Y2O3对锌熔再生硬质合金组织及性能的影响[J].硬质合金,2010,(2):65-70.
[5]羊建高,熊继.稀土添加剂对WC-Co硬质合金孔隙影响的研究[J].硬质合金,1994,1:10-12.
[6]曹顺华,林信平,李炯义,等.一种新型晶粒长大抑制剂对YG10硬质合金烧结行为的影响[J].中南大学学报:自然科学版,2005,36(4):533-537.
[7]张梅琳,朱世根,朱守星.超细及纳米硬质合金中碳含量的变化及对组织性能的影响[J].材料导报,2006,20(8)65-68.
[8]赵万军.再生硬质合金性能提高及工艺优化研究[D].长沙:中南大学,2009.
[2]赵万军,杨海林,阮建明.再生料制备的硬质合金组织与性能研究[J].硬质合金,2008,25(3):169-174.
[3]赵万军,阮建明,杨海林,等.回收WC制备硬质合金过程中的碳量控制[J].粉末冶金材料科学与工程,2007,12(6):359-363.
[4]杨海林,周雪安,赵万军,等.Y2O3对锌熔再生硬质合金组织及性能的影响[J].硬质合金,2010,(2):65-70.
[5]羊建高,熊继.稀土添加剂对WC-Co硬质合金孔隙影响的研究[J].硬质合金,1994,1:10-12.
[6]曹顺华,林信平,李炯义,等.一种新型晶粒长大抑制剂对YG10硬质合金烧结行为的影响[J].中南大学学报:自然科学版,2005,36(4):533-537.
[7]张梅琳,朱世根,朱守星.超细及纳米硬质合金中碳含量的变化及对组织性能的影响[J].材料导报,2006,20(8)65-68.
[8]赵万军.再生硬质合金性能提高及工艺优化研究[D].长沙:中南大学,2009.