A comparative study on thermally sprayed alumina based ceramic coatings

被引：0
|
作者：
A. A. Abdel-Samad
A. M. M. El-Bahloul
E. Lugscheider
S. A. Rassoul
机构：
[1] El-Mansoura University,Prod. Engg. Dept.
[2] El-Mansoura University,Prod. Engg. Dept.
[3] Aachen University of Technology,Materials Science Institute
来源：
Journal of Materials Science | 2000年 / 35卷
关键词：
Polymer; Alumina; Titania; Porosity; Zirconia;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Aluminium oxide is relatively cheap material, abundant almosteverywhere and therefore it is widely used for thermal sprayapplications. Various alumina based powder containing 13 wt. Titania, two different 40 wt.% Zirconia and three differentcompositions of alumina-zirconia-chromia were deposited byatmospheric plasma spraying (APS) and high power plasma spraying(HPPS). The coatings obtained were evaluated by optical microscopy,microhardness measurements, X-ray diffraction and porositymeasurements. Moreover, abrasion and friction wear resistance wereevaluated by using Pin-on-Disc machine. Microhardness values of APScoatings are relatively high as compared to HPPS coatings except inalumina-zirconia-chromia coatings. HPPS have higher hardness values.APS coatings are much coarser and show higher porosity values thanHPPS coatings. The best wear/friction behaviour exhibited coatingAl2O3-40 wt.% ZrO2 that deposited from agglomerated andsintered powder type.
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页码：3127 / 3130
页数：3
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