放电等离子烧结聚晶立方氮化硼刀具的性能
|
摘要
采用溶胶凝胶法在立方氮化硼(cBN)表面包裹SiO2,以铝粉、碳化硼粉和炭粉为烧结助剂,利用放电等离子烧结(SPS)技术在压力100MPa和1 700℃保温10min的条件下制备聚晶立方氮化硼(PcBN),研究了PcBN的烧结性能、物相组成、微观形貌、力学性能以及所制备刀具的切削性能。结果表明:烧结助剂、原位反应和cBN颗粒活化等因素的共同作用促进了PcBN的致密化,其相对密度为97%;PcBN的主晶相为cBN,同时还存在SiO2、Al3BC3、SiC相;PcBN的硬度为(38±3.5)GPa,抗弯强度为(425±23)MPa;在相同切削速度下,所制备的PcBN刀具前刀面的崩损面积以及后刀面的磨损带长度均小于日本知名公司所产PcBN(BN11)刀具的,当切削速度由200m·min-1增加到400m·min-1时,所制备的PcBN刀具的磨损程度轻于BN11刀具的,PcBN刀具的切削性能优于BN11刀具的。
Cubic boron nitride(cBN)was coated by SiO2 using the sol-gel method,and then polycrystalline cubic boron nitride(PcBN)was prepared by spark plasma sintering(SPS)under the pressure of 100 MPa at1 700℃for 10 min using Al powder,B4 C powder and carbon powder as sintering additives.The sintering ability,phase composition,micro-morphology,mechanical properties of PcBN and the cutting performance of fabricated cutter were studied.The results show that the combined effect of sintering additive,in-situ reaction and activation of cBN particles promoted the densification of PcBN,obtaining a relative density of 97%.The main crystalline phase of PcBN was cBN,and also included SiO2,Al3BC3 and SiC phases.The hardness of PcBN was(38±3.5)GPa,and bending strength was(425±23)MPa.At the same cutting speed,the breakdown area of the front surface and the wear band length of the rear surface of cutter made of the obtained PcBN were smaller than those of PcBN(BN11)cutter fabricated by a Japanes renowned company.When the cutting speed increased from 200m·min-1 to 400m·min-1,the wear degree of cutter made from PcBN was slighter than that of BN11 cutter,indicating the cutting performance of cutter made from PcBN prepared by SPS was better than that of BN11 cutter.
Cubic boron nitride(cBN)was coated by SiO2 using the sol-gel method,and then polycrystalline cubic boron nitride(PcBN)was prepared by spark plasma sintering(SPS)under the pressure of 100 MPa at1 700℃for 10 min using Al powder,B4 C powder and carbon powder as sintering additives.The sintering ability,phase composition,micro-morphology,mechanical properties of PcBN and the cutting performance of fabricated cutter were studied.The results show that the combined effect of sintering additive,in-situ reaction and activation of cBN particles promoted the densification of PcBN,obtaining a relative density of 97%.The main crystalline phase of PcBN was cBN,and also included SiO2,Al3BC3 and SiC phases.The hardness of PcBN was(38±3.5)GPa,and bending strength was(425±23)MPa.At the same cutting speed,the breakdown area of the front surface and the wear band length of the rear surface of cutter made of the obtained PcBN were smaller than those of PcBN(BN11)cutter fabricated by a Japanes renowned company.When the cutting speed increased from 200m·min-1 to 400m·min-1,the wear degree of cutter made from PcBN was slighter than that of BN11 cutter,indicating the cutting performance of cutter made from PcBN prepared by SPS was better than that of BN11 cutter.
引文
[1]SAKETI S,SVEEN S,GUNNARSSON S,et al.Wear of a high cBN content PcBN cutting tool during hard milling of powder metallurgy cold work tool steels[J].Wear,2015,332:752-761.
[2]DENKENA B,KOHLER J,VENTURA C.Influence of grinding parameters on the quality of high content P-cBNcutting inserts[J].Journal of Materials Processing Technology,2013,214(2):276-284.
[3]SEIFERT M,SHEN Z J,KRENKEL W,et al.Nb(Si,C,N)composite materials densified by spark plasma sintering[J].Journal of the European Ceramic Society,2015,35(12):3319-3327.
[4]赵晶晶,李继文,张盘龙,等.放电等离子烧结制备W-20%Cu复合材料的组织及性能研究[J].稀有金属与硬质合金,2015,43(2):17-21.
[5]翟凤瑞,谢志鹏,张衡,等.放电等离子低温烧结h-BN-SiC复相陶瓷的结构与力学性能[J].硅酸盐学报,2015,43(6):765-769.
[6]孟晔,强文江,贾成厂.日本放电等离子体烧结的现状[J].粉末冶金技术,2014,32(4):296-305.
[7]TABRIZI S G,BABAKHANI A,SAJIADI S A,et al.Microstructural aspects of in-situ TiB reinforced Ti-6Al-4Vcomposite processed by spark plasma sintering[J].Transactions of Nonferrous Metals Society of China,2015,25(5):1460-1467.
[8]孙红婵,胡冰,张桓,等.钨丝掺杂对碳化硅放电等离子烧结工艺曲线的影响研究[J].硅酸盐通报,2014,33(12):3196-3199.
[9]魏红康,赵林,汪长安,等.CNTs对B4C放电等离子烧结行为和力学性能的影响[J].人工晶体学报,2014,43(12):3140-3144.
[10]苟波,梁波,靳喜海.放电等离子烧结致密单相钛三铝碳二的反应机理[J].硅酸盐学报,2014,42(7):926-931.
[11]杨西亚,郭玉忠,陈昱潼,等.放电等离子烧结TaC/Ti复合材料的组织与力学性能[J].稀有金属材料与工程,2013,42(11):2274-2278.
[12]HOTTA M,GOTO T.Densification and microstructure of Al2O3-cBN composites prepared by spark plasma sintering[J].Journal of the Ceramic Society of Japan,2008,116(6):744-748.
[13]赵玉成,王明智.放电等离子烧结制备立方氮化硼聚晶[J].金刚石与磨料磨具工程,2007,160(4):22-24.
[14]KITIWAN M,ITO A,ZHANG J F,et al.Densification and mechanical properties of cBN-TiN-TiB2composites prepared by spark plasma sintering of SiO2-coated cBN powder[J].Journal of the European Ceramic Society,2014,34(15):3619-3626.
[15]ZHANG J F,TU R,GOTO T.Evaluation of CVD-deposited SiO2as a sintering aid for cubic boron nitride consolidated with alumina by spark plasma sintering[J].Journal of the American Ceramic Society,2012,95(9):2827-2832.
[16]ZHANG J F,TU R,GOTO T.Spark plasma sintering of Al2O3-cBN composites facilitated by Ni nanoparticle precipitation on cBN powder by rotary chemical vapor deposition[J].Journal of the European Ceramic Society,2011,31(12):2083-2087.
[17]WANG H L,LEE S H,FENG L.HfB2-SiC composite prepared by reactive spark plasma sintering[J].Ceramics International,2014,40(7):11009-11013.
[18]WANG H L,LEE S H,KIM H D,et al.Synthesis of ultrafine hafnium diboride powders using solution-based processing and spark plasma sintering[J].InternationaL Journal of Applied Ceramic Technology,2014,11(2):359-363.
[19]WANG H L,FENG L,LEE S H,et al.ZrB2-Al3BC3composites prepared using Al-B4C-C additives and spark plasma sintering[J].Ceramics International,2013,39(1):897-901.
[20]WANG H L,LEE S H,KIM H D.Nano-hafnium diboride powders synthesized using a spark plasma sintering apparatus[J].Journal of the American Ceramic Society,2012,95(5):1493-1496.
[21]WANG H L,FAN B B,FENG L,et al.The fabrication and mechanical properties of SiC/ZrB2 laminated ceramic composite prepared by spark plasma sintering[J].Ceramics International,2012,38(6):5015-5022.
[2]DENKENA B,KOHLER J,VENTURA C.Influence of grinding parameters on the quality of high content P-cBNcutting inserts[J].Journal of Materials Processing Technology,2013,214(2):276-284.
[3]SEIFERT M,SHEN Z J,KRENKEL W,et al.Nb(Si,C,N)composite materials densified by spark plasma sintering[J].Journal of the European Ceramic Society,2015,35(12):3319-3327.
[4]赵晶晶,李继文,张盘龙,等.放电等离子烧结制备W-20%Cu复合材料的组织及性能研究[J].稀有金属与硬质合金,2015,43(2):17-21.
[5]翟凤瑞,谢志鹏,张衡,等.放电等离子低温烧结h-BN-SiC复相陶瓷的结构与力学性能[J].硅酸盐学报,2015,43(6):765-769.
[6]孟晔,强文江,贾成厂.日本放电等离子体烧结的现状[J].粉末冶金技术,2014,32(4):296-305.
[7]TABRIZI S G,BABAKHANI A,SAJIADI S A,et al.Microstructural aspects of in-situ TiB reinforced Ti-6Al-4Vcomposite processed by spark plasma sintering[J].Transactions of Nonferrous Metals Society of China,2015,25(5):1460-1467.
[8]孙红婵,胡冰,张桓,等.钨丝掺杂对碳化硅放电等离子烧结工艺曲线的影响研究[J].硅酸盐通报,2014,33(12):3196-3199.
[9]魏红康,赵林,汪长安,等.CNTs对B4C放电等离子烧结行为和力学性能的影响[J].人工晶体学报,2014,43(12):3140-3144.
[10]苟波,梁波,靳喜海.放电等离子烧结致密单相钛三铝碳二的反应机理[J].硅酸盐学报,2014,42(7):926-931.
[11]杨西亚,郭玉忠,陈昱潼,等.放电等离子烧结TaC/Ti复合材料的组织与力学性能[J].稀有金属材料与工程,2013,42(11):2274-2278.
[12]HOTTA M,GOTO T.Densification and microstructure of Al2O3-cBN composites prepared by spark plasma sintering[J].Journal of the Ceramic Society of Japan,2008,116(6):744-748.
[13]赵玉成,王明智.放电等离子烧结制备立方氮化硼聚晶[J].金刚石与磨料磨具工程,2007,160(4):22-24.
[14]KITIWAN M,ITO A,ZHANG J F,et al.Densification and mechanical properties of cBN-TiN-TiB2composites prepared by spark plasma sintering of SiO2-coated cBN powder[J].Journal of the European Ceramic Society,2014,34(15):3619-3626.
[15]ZHANG J F,TU R,GOTO T.Evaluation of CVD-deposited SiO2as a sintering aid for cubic boron nitride consolidated with alumina by spark plasma sintering[J].Journal of the American Ceramic Society,2012,95(9):2827-2832.
[16]ZHANG J F,TU R,GOTO T.Spark plasma sintering of Al2O3-cBN composites facilitated by Ni nanoparticle precipitation on cBN powder by rotary chemical vapor deposition[J].Journal of the European Ceramic Society,2011,31(12):2083-2087.
[17]WANG H L,LEE S H,FENG L.HfB2-SiC composite prepared by reactive spark plasma sintering[J].Ceramics International,2014,40(7):11009-11013.
[18]WANG H L,LEE S H,KIM H D,et al.Synthesis of ultrafine hafnium diboride powders using solution-based processing and spark plasma sintering[J].InternationaL Journal of Applied Ceramic Technology,2014,11(2):359-363.
[19]WANG H L,FENG L,LEE S H,et al.ZrB2-Al3BC3composites prepared using Al-B4C-C additives and spark plasma sintering[J].Ceramics International,2013,39(1):897-901.
[20]WANG H L,LEE S H,KIM H D.Nano-hafnium diboride powders synthesized using a spark plasma sintering apparatus[J].Journal of the American Ceramic Society,2012,95(5):1493-1496.
[21]WANG H L,FAN B B,FENG L,et al.The fabrication and mechanical properties of SiC/ZrB2 laminated ceramic composite prepared by spark plasma sintering[J].Ceramics International,2012,38(6):5015-5022.