Results 111 to 120 of about 4,656 (308)

Cyclic oxidation of cobalt-chromium-aluminum-yttrium and aluminide coatings on IN-100 and VIA alloys in high velocity gases [PDF]

Embedded-alumina-particle aluminide (EAPA) coated and CoCrAlY coated IN-100 and NASA-TRW-VIA specimens were cyclically oxidation tested in a high velocity (approximately Mach 1) gas flame at 1093 C (2000 F).
Deadmore, D. L.
core   +1 more source

Uncovering Archaeological Treasures at Saruq al‐Hadid, UAE: Insights From Ground Penetrating Radar and Magnetic Data

Archaeological Prospection, EarlyView.
ABSTRACT Saruq al‐Hadid, located at the edge of the Rub Al‐Khali desert near Dubai's southern border with Abu Dhabi, is among the region's richest archaeological sites. Renowned for its historical role in metallurgy, trade and human habitation, the site was occupied from the Umm an‐Nar period through the post–Iron Age. Despite its significance, much of
Moamen Ali, Sonia Santos‐Assunção, Mohammed Y. Ali, Diana Francis, Mansour B. Radwan, Mariam A. Alsuwaidi, Bader M. Al Ali, Jamal H. Safi, Saif Ullah, Muhammed A. Iqbal   +9 more
wiley   +1 more source

ANALISIS STRUKTUR MIKRO LAPISAN BOND COAT NIAL THERMAL BARRIER COATING (TBC) PADA PADUAN LOGAM BERBASIS CO

Jurnal Energi Dan Manufaktur, 2012
Kehandalan dan umur pakai sistem Thermal Barrier Coating (TBC) ditentukan oleh kestabilan lapisan bond coat dan thermal grown oxide (TGO). Sehingga sangatlah penting untuk memahami mekanisme pembentukan dan degradasi lapisan ini.
Toto Sudiro, Kusnandar -, Hubby ‘Izzudin, Kemas A. Zaini Thosin   +3 more
doaj  

A status review of Lewis Research Center supported protection system development [PDF]

Protective coatings for heat resistant materials for aircraft gas turbine engines, and refractory metals for reentry ...
Grisaffe, S. J., Levine, S. R., Merutka, J. P.   +2 more
core   +1 more source

Ultrasonic probing of the elastic properties of PMMA bead packings and their rearrangement during pressure sintering

, 2010
Ultrasound transmission in PMMA spherical bead packings is investigated during the sintering process under stress. Velocity and amplitude measurements of coherent longitudinal waves are performed to monitor the evolution of the elastic properties of the ...
Jia, Xiaoping, Langlois, Vincent
core   +2 more sources

Packing Properties Assessment of Cement and Alternative Powders: Artifacts and Protocols

Cement and Concrete Research
This paper introduces three major recommendations for the assessment of the maximum packing fraction of mineral powders through compressive rheology. First, our results show that a minimum compressive stress is required for the measured solid volume fraction to tend towards a constant jamming fraction.
Bessaies-Bey, Hela, Yu, Xiaohan, Zuo, Wenqiang, Ahmadah, Oumayma, Deou, Janine, Caneda-Martínez, Laura, Roussel, Nicolas   +6 more
openaire   +1 more source

Narrative inquiry for beginners: A practical guide for health professions education researchers

Anatomical Sciences Education, EarlyView.
Abstract Narrative inquiry (NI) is a rich methodological approach centered around the analysis of stories. While NI has great value within health professions education research, it may be overwhelming for novice researchers (or those new to NI) to employ in practice.
Shemona Y. Rozario, Michelle D. Lazarus, Mahbub Sarkar, Melanie K. Farlie   +3 more
wiley   +1 more source

Improvement of wear and hot melt loss resistance of metal carbide layers on H13 steel

Materials Research Express
In this paper, H13 steel was pre-carburized. Then niobizing and vanadizing layers were prepared by pack cementation method. The high temperature friction and wear properties and hot melt loss properties of different layers and substrates were studied by ...
Zhi-Zhong Zeng, Dan Lin, Jian Shang
doaj   +1 more source

How multilingual is scholarly communication? Mapping the global distribution of languages in publications and citations

Journal of the Association for Information Science and Technology, EarlyView.
Abstract Language is a major source of systemic inequities in science, particularly among scholars whose first language is not English. Studies have examined scientists' linguistic practices in specific contexts; few, however, have provided a global analysis of multilingualism in science. Using two major bibliometric databases (OpenAlex and Dimensions),
Carolina Pradier, Lucía Céspedes, Vincent Larivière   +2 more
wiley   +1 more source

Cyclic oxidation of coated Oxide Dispersion Strengthened (ODS) alloys in high velocity gas streams at 1100 deg C [PDF]

Several overlay coatings on ODS NiCrAl's were tested in Mach 1 and Mach 0.3 burner rigs to examine oxidation and thermal fatigue performance. The coatings were applied by various methods.
Gedwill, M. A.
core   +1 more source