Results 41 to 50 of about 23,557 (186)

Mullite production by valorization of a hydrodesulphurization catalyst waste

Journal of the American Ceramic Society, Volume 109, Issue 1, January 2026.
Due to its high alumina and silica content, Ni–Mo catalyst waste is a suitable, amorphous raw material for producing aluminosilicate phases. Thermal treatment of the waste at 1200°C for 30 min yields a material containing 50 wt.% mullite and exhibiting 96% overall crystallinity. The addition of amorphous silica significantly enhances mullite formation:
Rafael Carrizosa, Agenor De Noni Jr., Aurora López‐Delgado, Isabel Padilla, Maximina Romero   +4 more
wiley   +1 more source

Preparação de mulita a partir do mineral topázio Preparation of mullite from topaz

Cerâmica, 2004
Mulita é o único composto termodinamicamente estável no sistema binário Al2O3 - SiO2, na faixa 70,5 a 74,0% em peso de Al2O3. Mulita metaestável na faixa de 74 a 83,6% de Al2O3, entretanto, pode ser obtida.
R. R. Monteiro, A. C. S. Sabioni, G.M. da Costa   +2 more
doaj   +1 more source

The interaction between Fe2O3‐bearing molten slag and MgO‐C refractory containing calcium magnesium aluminate antioxidant

Journal of the American Ceramic Society, Volume 108, Issue 10, October 2025.
Abstract The interaction behavior between iron oxide‐bearing slags and carbon‐bonded MgO refractory (MgO‐C) containing calcium magnesium aluminate (CMA) was investigated at 1400°C, 1500°C, and 1600°C. After the iron oxide was reduced by the carbon from the MgO‐C refractory, a significant amount of MgO and metallic iron was observed to precipitate and ...
Xingwen Wei, Anton Yehorov, Manuel Loeffler, Yuri Korobeinikov, Olga Fabrichnaya, Seetharaman Sridhar, Olena Volkova   +6 more
wiley   +1 more source

Finite Element Analysis of R‐Curve Behavior in Ceramics Using the Damage Model Based on the Cohesive‐Zone Relationship

International Journal of Ceramic Engineering &Science, Volume 7, Issue 5, September 2025.
ABSTRACT The evaluation of the R‐curve behavior of ceramics, which is characterized by an increase in crack resistance with crack propagation, is crucial for advancing their implementation in engineering applications that require high reliability.
Mostafizur Rahman, Taiyo Maeda, Toshio Osada, Shingo Ozaki   +3 more
wiley   +1 more source

Effect of aluminium sulphate on phase formation and morphology development of mullite whiskers

, 2010
Well developed mullite whiskers were obtained by heating compacts of kaolin and 2 wt.% sodium pyrophosphate powder at 1350ºC for 10 h, with or without a small addition of aluminium sulphate. Without aluminium sulphate, mullite whiskers were obtained with
Hongbin Tan
core   +1 more source

Impact of Different Types of Dust on Solar Glass Transmittance and PV Module Performance

Progress in Photovoltaics: Research and Applications, Volume 33, Issue 8, Page 844-853, August 2025.
This study characterizes the soiling losses between four natural dusts. It identifies significant differences in soiling losses, showing that a particular dust from Thailand has a 12.8% higher transmittance loss slope. In addition, measured slopes of Isc losses are consistently lower than calculated values, with an average discrepancy of 16.6%.
Guido Willers, Nattakarn Sakarapunthip, Klemens Ilse, Surawut Chuangchote, Ralph Gottschalg   +4 more
wiley   +1 more source

Twice‐Functionalized Montmorillonite Nanosheets for Polymer‐Derived MMT‐SiOC Nanocomposites: Phase Formation and Porosity

Small, Volume 21, Issue 19, May 12, 2025.
Novel MMT‐SiOC ceramic nanocomposites are prepared. At 900°C and 1200°C, growth and refinement of a crystalline α‐SiO2 phase on the MMT nanoflakes led to 2 to 5 nm pores upon etching. The size of the SiO2 domains appeared to be diffusion‐limited by turbostratic C phases in the SiOC matrix.
Advaith V. Rau, Kathy Lu
wiley   +1 more source

Oxide‐Based Ceramic Matrix Composites for High‐Temperature Environments: A Review

Advanced Engineering Materials, Volume 27, Issue 7, April 2025.
This review examines oxide‐based ceramic matrix composites, focusing on their processing, composition, and mechanical properties for high‐temperature applications. Key topics include oxidation resistance, failure mechanisms, and corrosion behavior, with insights into their potential use in aerospace, nuclear power, and other high‐performance industries.
Karthikeyan Ramachandran, Joseph C. Bear, Doni Daniel Jayaseelan   +2 more
wiley   +1 more source

3D printing of ceramics: Advantages, challenges, applications, and perspectives

Journal of the American Ceramic Society, Volume 107, Issue 12, Page 7879-7920, December 2024.
Abstract 3D printing (3DP) technologies have transformed the processing of advanced ceramics for small‐scale and custom designs during the past three decades. Simple and complex parts are designed and manufactured using 3DP technologies for structural, piezoelectric, and biomedical applications.
Susmita Bose, Enver Koray Akdogan, Vamsi K. Balla, Sushant Ciliveri, Paolo Colombo, Giorgia Franchin, Nicholas Ku, Priya Kushram, Fangyong Niu, Joshua Pelz, Andrew Rosenberger, Ahmad Safari, Zachary Seeley, Rodney W. Trice, Lionel Vargas‐Gonzalez, Jeffrey P. Youngblood, Amit Bandyopadhyay   +16 more
wiley   +1 more source

MULLITE AND ITS ISOMORPHIC SUBSTITUTION OVERVIEW

Конденсированные среды и межфазные границы, 2018
The phase diagram of SiO2-Al2O3 is considered. The paper presents an overview of the methods of synthesising mullite, including the calcining of natural aluminosilicates, the Czochralski process (synthesising mullite from melt), the Verneuil process ...
Evgeniya G. Yarotskaya, Pavel P. Fedorov
doaj   +1 more source