低温烧结3Y-TZP陶瓷的研究
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摘要
以不同质量分数的MnO_2-TiO_2(质量比为1∶1)为烧结助剂,在1300~1500℃下低温烧结制备了3Y-TZP陶瓷。对3Y-TZP陶瓷的相对密度、物相及显微结构、显微硬度、抗弯强度及断裂韧性进行了测试分析,并对烧结助剂的基本性能进行了表征。探究了烧结助剂及烧结温度对3Y-TZP陶瓷性能的影响。实验结果表明:在3Y-TZP陶瓷中加入烧结助剂MnO_2-TiO_2(质量比为1∶1)可以实现低温烧结。试样的相对密度、显微硬度、抗弯强度、断裂韧性随烧结温度的升高先增大后降低。在烧结助剂为0.5wt%,烧结温度为1350℃时,试样的相对密度及力学性能都达到最大,在此条件下,试样的相对密度达97.16%,显微硬度为2032.8 HV,抗弯强度为300 MPa,断裂韧性为8.35MPa·m1/2,且试样的断裂方式为晶粒拔出及晶粒断裂遵循着穿-沿晶断裂的模式,且晶粒极小。
3%(mole fraction) yttrium-partially-stabilized zirconia(3 Y-TZP) ceramic was fabricated low temperature sintering at 1300-1500 ℃ by adding different mass ratios MnO_2-TiO_2(mass fraction 1∶ 1) as sintering aid. Relative density,phase and microstructure,Vickers hardness,bending strength and fracture toughness as a function of sintering temperature and additive content were investigated. The experiment results show that liquid phase sintering at low temperature can be realized through adding MnO_2-TiO_2(mass fraction 1 ∶ 1) to 3 Y-TZP. The relative density,microhardness,flexural strength and fracture toughness of the samples increased firstly and then decreased with the increase of sintering temperature.The relative density and mechanical properties of the samples reached the maximum when the sintering aids were 0. 5 wt% and the sintering temperature was 1350 ℃. Under these conditions,the relative density of samples is 97. 16%,the microhardness is 2032. 8 HV,the bengding strength is 300 MPa,the fracture toughness is 8. 35 MPa · m1/2. The fracture mode of the sample is grain pull-out and grain fracture following the mode of transitor-intergranular fracture and the grain size is very small.
3%(mole fraction) yttrium-partially-stabilized zirconia(3 Y-TZP) ceramic was fabricated low temperature sintering at 1300-1500 ℃ by adding different mass ratios MnO_2-TiO_2(mass fraction 1∶ 1) as sintering aid. Relative density,phase and microstructure,Vickers hardness,bending strength and fracture toughness as a function of sintering temperature and additive content were investigated. The experiment results show that liquid phase sintering at low temperature can be realized through adding MnO_2-TiO_2(mass fraction 1 ∶ 1) to 3 Y-TZP. The relative density,microhardness,flexural strength and fracture toughness of the samples increased firstly and then decreased with the increase of sintering temperature.The relative density and mechanical properties of the samples reached the maximum when the sintering aids were 0. 5 wt% and the sintering temperature was 1350 ℃. Under these conditions,the relative density of samples is 97. 16%,the microhardness is 2032. 8 HV,the bengding strength is 300 MPa,the fracture toughness is 8. 35 MPa · m1/2. The fracture mode of the sample is grain pull-out and grain fracture following the mode of transitor-intergranular fracture and the grain size is very small.
引文
[1]Ghaemi M H,Reichert S,Krupa A,et al.Zirconia Ceramics with Additions of Alumina for Advanced Tribological and Biomedical Applications[J].Ceramics International,2017.
[2]董朋朋,薛屺,徐永驰,等.成孔剂对模板法制备Si O2空心陶瓷球性能的影响[J].硅酸盐通报,2016;35(7):2182-2186.
[3]牟军,薛屺,董朋朋,等.铝矾土空心陶粒支撑剂的制备及性能研究[J].人工晶体学报,2017,46(7):1244-1249.
[4]孙正球,苗鸿雁,谈国强.液相烧结3Y-TZP全瓷牙科材料及力学性能研究[J].云南大学学报:自然科学版,2005(S3):409-513.
[5]Verkerk M J,Winnubst A J A,Burggraaf A J.Effect of impurities on sintering and conductivity of yttria-stabilized zirconia[J].Journal of Materials Science,1982,17:3113-3122.
[6]Keizer K,Burggraaf A J,De G W.The effect of Bi2O3on the electrical and mechanical properties of Zr O2-Y2O3ceramics[J].Journal of Materials Science,1982,17:1095-1102.
[7]Uchanan R C,Sircar A.Densification of calcia-stabilized zirconia with borates[J].Journal of American Ceramic Society,1983,66(2):C20-C21.
[8]Sun Y,Zhang Y,Guo J.Microstructure and bending strength of 3Y-TZP ceramics by liquid-phase sintering with CAS addition[J].Ceramics International,2003,29:229-232.
[9]Erkalfa H,Misirli Z,Baykara T.Densification of alumina at 1250℃with Mn O2and Ti O2additives[J].Ceramics International,1995,21:345-348.
[10]Huang X W,Wang S W,Zhao S K,et al.Effect of liquid-forming additives on the sintering and mechanical properties of Al2O3/3Y-TZP(30vol.%)composite[J].Materials Research Bulletin,2002,37(10):1709-1719.
[11]Ramesh S,Gill C,Lawson S.The effect of copper oxide on sintering,microstructure,mechanical properties and hydrothermal ageing of coated 2.5Y-TZP ceramics[J].Journal of Materials Science,1999,34:5457-5467.
[12]Hang Bin,Wang Huan-ping,Ma Hong-ping,et al.Mechanism of lowering the sintering temperature of Al2O3ceramic by the addition of Cu OTi O2(I)[J].Chinese Journal of Materials Research,2009,5:534-540.
[13]Raghavan S,Wang H,Dinwiddie R B,et al.The effect of grain size,porosity and yttria content on the thermal conductivity of nanocrystalline zirconia.Scripta Materialia,1998,39(8):1119-1125.
[2]董朋朋,薛屺,徐永驰,等.成孔剂对模板法制备Si O2空心陶瓷球性能的影响[J].硅酸盐通报,2016;35(7):2182-2186.
[3]牟军,薛屺,董朋朋,等.铝矾土空心陶粒支撑剂的制备及性能研究[J].人工晶体学报,2017,46(7):1244-1249.
[4]孙正球,苗鸿雁,谈国强.液相烧结3Y-TZP全瓷牙科材料及力学性能研究[J].云南大学学报:自然科学版,2005(S3):409-513.
[5]Verkerk M J,Winnubst A J A,Burggraaf A J.Effect of impurities on sintering and conductivity of yttria-stabilized zirconia[J].Journal of Materials Science,1982,17:3113-3122.
[6]Keizer K,Burggraaf A J,De G W.The effect of Bi2O3on the electrical and mechanical properties of Zr O2-Y2O3ceramics[J].Journal of Materials Science,1982,17:1095-1102.
[7]Uchanan R C,Sircar A.Densification of calcia-stabilized zirconia with borates[J].Journal of American Ceramic Society,1983,66(2):C20-C21.
[8]Sun Y,Zhang Y,Guo J.Microstructure and bending strength of 3Y-TZP ceramics by liquid-phase sintering with CAS addition[J].Ceramics International,2003,29:229-232.
[9]Erkalfa H,Misirli Z,Baykara T.Densification of alumina at 1250℃with Mn O2and Ti O2additives[J].Ceramics International,1995,21:345-348.
[10]Huang X W,Wang S W,Zhao S K,et al.Effect of liquid-forming additives on the sintering and mechanical properties of Al2O3/3Y-TZP(30vol.%)composite[J].Materials Research Bulletin,2002,37(10):1709-1719.
[11]Ramesh S,Gill C,Lawson S.The effect of copper oxide on sintering,microstructure,mechanical properties and hydrothermal ageing of coated 2.5Y-TZP ceramics[J].Journal of Materials Science,1999,34:5457-5467.
[12]Hang Bin,Wang Huan-ping,Ma Hong-ping,et al.Mechanism of lowering the sintering temperature of Al2O3ceramic by the addition of Cu OTi O2(I)[J].Chinese Journal of Materials Research,2009,5:534-540.
[13]Raghavan S,Wang H,Dinwiddie R B,et al.The effect of grain size,porosity and yttria content on the thermal conductivity of nanocrystalline zirconia.Scripta Materialia,1998,39(8):1119-1125.