等离子喷涂NiAl/Al2O3梯度陶瓷涂层的结构与组织特征
Structure of Plasma-sprayed NiAl-Al2O3 Gradient Ceramic Coatings
摘 要
利用等离子喷涂方法制备了NiAl/Al2O3梯度陶瓷涂层,并对涂层的组织分布、相结构、硬度和孔隙率进行了研究.结果表明：梯度涂层的组织表现出宏观不均匀性和微观连续性的分布特征,是由α-Al2O3、γ-Al2O3、δ-Al2O3、Ni、NiO以及镍铝金属间化合物等多种相组成的复合材料;梯度涂层中NiAl合金层的孔隙最少,表面纯陶瓷层孔隙率最高;随着Al2O3含量的增加,涂层的硬度逐渐增大.
等离子喷涂
组织结构
孔隙率
gradient coating
plasma spraying
structure
porosity
Abstract
NiAl/Al2O3 gradient ceramic coatings were fabricated by plasma spraying.The microstructure and phase structure of gradient coatings were analyzed,the hardness and porosity were tested.The gradient coatings showed the characteristic that structure was nonuniform macroscopically but consecutive microscopically.The gradient coating was multi-phase composite including α-Al2O3,γ-Al2O3,δ-Al2O3,Ni,NiO,TiO2 and Ni-Al intermetallic compound.The porosity of NiAl layer was the least and Al2O3 layer was the most,and the hardness of coating increased as the Al2O3 increased.
中图分类号 TG174
所属栏目
基金项目 陕西省自然科学基金资助项目(2006B22)
收稿日期 2006/5/18
修改稿日期 2006/8/26
网络出版日期
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备注雷阿利(1957-),女,陕西长安人,副教授.
引用该论文: LEI A-li,YANG Shi-chuan,FENG La-jun,HUI Bo. Structure of Plasma-sprayed NiAl-Al2O3 Gradient Ceramic Coatings[J]. Materials for mechancial engineering, 2007, 31(4): 62～65
雷阿利,杨士川,冯拉俊,惠博. 等离子喷涂NiAl/Al2O3梯度陶瓷涂层的结构与组织特征[J]. 机械工程材料, 2007, 31(4): 62～65
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参考文献
【1】蔡建平,李波.热喷涂陶瓷涂层[J].机械工程材料,2000,24(1):5-7.
【2】Pranevicius L,Valatkevicius P,Valincius V,et al.Catalytic behavior of plasma-sprayed Al- Al2O3 coatings doped with metal oxides[J].Surface and Coatings Technology,2000,125(1):392-395.
【3】曾爱香,唐绍裘.金属基陶瓷涂层的制备和应用及发展[J].表面技术,1999,28(1):1-4.
【4】Dumitrescu L,Maury F.Al2O3 Coatings on stainless steel from Al metal-organic chemical vapor desposition and thermal treatments[J].Surface and Coatings Technology,2000,125(1):419-423.
【5】陈万林,王富耻,吕广庶,等.梯度涂层的等离子喷涂工艺参数及其关键保证措施[J].电加工,1998(5):17-21.
【6】冯拉俊,惠博,梁天权,等.离子喷涂NiAl-Al2O3梯度陶瓷涂层的性能研究[J].表面技术,2005,34(2):15-16.
【7】陈学定,韩文政.表面涂层技术[M].北京:机械工业出版社,1994.
【8】马 壮,吕广庶,王富耻,等.等离子喷涂沉积率对梯度涂层结合强度影响研究[J].材料工程,2001(5):34-36.
【9】任家烈,吴爱萍.先进材料的连接[M].北京:机械工业出版社,2000.
【2】Pranevicius L,Valatkevicius P,Valincius V,et al.Catalytic behavior of plasma-sprayed Al- Al2O3 coatings doped with metal oxides[J].Surface and Coatings Technology,2000,125(1):392-395.
【3】曾爱香,唐绍裘.金属基陶瓷涂层的制备和应用及发展[J].表面技术,1999,28(1):1-4.
【4】Dumitrescu L,Maury F.Al2O3 Coatings on stainless steel from Al metal-organic chemical vapor desposition and thermal treatments[J].Surface and Coatings Technology,2000,125(1):419-423.
【5】陈万林,王富耻,吕广庶,等.梯度涂层的等离子喷涂工艺参数及其关键保证措施[J].电加工,1998(5):17-21.
【6】冯拉俊,惠博,梁天权,等.离子喷涂NiAl-Al2O3梯度陶瓷涂层的性能研究[J].表面技术,2005,34(2):15-16.
【7】陈学定,韩文政.表面涂层技术[M].北京:机械工业出版社,1994.
【8】马 壮,吕广庶,王富耻,等.等离子喷涂沉积率对梯度涂层结合强度影响研究[J].材料工程,2001(5):34-36.
【9】任家烈,吴爱萍.先进材料的连接[M].北京:机械工业出版社,2000.
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