نتایج جستجو برای: nicraly

تعداد نتایج: 84  

در این تحقیق رفتار خوردگی داغ پوشش‌های NiCrAlY اعمال شده بر روی نمونه‌های فولادی توسط روش پاشش حرارتی سوخت اکسیژن سرعت بالا (HVOF) تحت پارامترهای مختلف پاشش مانند سرعت سیلان پروپان، فاصله پاشش و نرخ تغذیه پودر مورد بررسی قرار گرفت. بدین منظور برای بررسی تأثیر پارامترهای مذکور بر رفتار خوردگی داغ این پوشش‌ها، نمونه‌ها تحت آزمون خوردگی داغ به روش کوره‌ای با اتمسفر هوا و مخلوط نمک Na2SO...

Journal: :Thermal spray 2021

Abstract Boundary layers on surfaces will change from laminar to turbulent flow after a critical length. Due the differing heat transfer coefficients of and flow, point transition can be detected by heating surface measuring temperature thermographic imaging. Locating is crucial for aerodynamic optimization components. In this study, fiber reinforced polymer composites (FRPCs) were chosen as te...

Journal: :Surface & Coatings Technology 2021

Additive Manufacturing offers an innovative route for producing high-quality parts in various fields. A bi-material system, consisting a NiCrAlY bond coat deposited onto Ni-based Alloy 625 substrate, was manufactured by laser powder bed fusion (LPBF). Test samples were prepared and included sol-gel ceramic ZrO2(Y2O3) top coats as well specific grain boundary serration (GBS) heat treatment promo...

2013
K. Raghu Ram Mohan Reddy M. M. M. Sarcar N. Ramanaiah

Ti6Al4V alloys are widely used in chemical plants, automobile, aerospace industries and medical applications (bone, dental) because of its high specific strength. But, it has poor wear resistance. In the present investigation, duplex coatings were employed to enhance the mechanical and tribological properties. WC-Co Ceramic coatings were deposited on Ti6Al4V substrate with different thicknesses...

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