عنوان المقالة:تاثير الطاقة النوعية لليزر على تحسين الخواص لطلاءات الرش بالبلازما للزركونيا المستقرة جزئيا باليتيريا The influence of laser specific energy on laser sealing of plasma sprayed yttria partially stabilized zirconia coating
أ.د. علي سبع حمود | Professor Dr. Eng. Ali Sabea Hammood | 9381
- نوع النشر
- مجلة علمية
- المؤلفون بالعربي
- د.محمد كاظم جاسم, د.سامي ابراهيم الربيعي, د.علي سبع حمود
- المؤلفون بالإنجليزي
- Mohammed Jasim Kadhim , Sami Ibrahim Al-Rubaiey , Ali Sabea Hammood
- الملخص العربي
- تاثير الطاقة النوعية لليزر على تحسين الخواص لطلاءات الرش بالبلازما للزركونيا المستقرة جزئيا باليتيريا
- الملخص الانجليزي
- a b s t r a c t A 2 kW CO2 laser was used to modify the surface of air plasma sprayed (APS) 7.8 wt% yttria partially stabilized zirconia (YPSZ) coatings; the effects of laser specific energy was investigated. The sealed coatings were characterized by SEM, EDS, WDS, XRD and microhardness. It was possible to control the cell size (or well-sintered ‘domain like’ structure), crack width, depth of sealing and depth of concavity by carefully adjusting the specific energy. The microstructure of the sealed coatings was characterized by a cellular structure at all laser parameters studied. Cracks formed under optimum specific energies (1–2 J/mm2) were seen to be shallow and they do not penetrate through the plasma sprayed coating. The sealed coatings have much lower roughness and higher hardness than non-treated coatings indicating the beneficial effect of plasma treatment.
- تاريخ النشر
- 13/09/2012
- الناشر
- Optics and Lasers in Engineering- ELSEVIER-Calrivate Analytics
- رقم المجلد
- 51
- رقم العدد
- رابط DOI
- https://doi.org/10.1016/j.optlaseng.2012.08.010
- الصفحات
- 159-166
- رابط خارجي
- https://www.sciencedirect.com/science/article/pii/S0143816612002576?via%3Dihub
- الكلمات المفتاحية
- Keywords: Yttria partially stabilized zirconia Plasma sprayed coating Laser specific energy Coating sealing Crack networ