Results 271 to 280 of about 569,951 (336)

Novel Pack Cementations: Alternating Current Field Enhanced Pack Cementations

Materials Performance and Characterization, 2018
Abstract Thermal chemical treatments can effectively improve the surface properties of steels to resist wear, erosion, fretting, and oxidation. Among the various types of thermo-chemical treatment, pack cementation is most often employed for diffusing boron, aluminum, chromium, or silicon into the surface of steel.
Fei Xie, Shaoqiang Xu, Jianwei Pan
openaire   +1 more source

High-temperature oxidation resistance and thermal stability of higher manganese silicide powder synthesized by pack cementation

Journal of Alloys and Compounds, 2021
Higher manganese silicides (HMS) are attractive alternative materials for high-temperature thermoelectric applications. One of the main factors that determine the sustainability of thermoelectric materials is their sufficient oxidation resistance in the ...
Aikaterini Teknetzi, E. Tarani, D. Stathokostopoulos, D. Karfaridis, K. Chrissafis, G. Vourlias   +5 more
semanticscholar   +1 more source

Pack cementation processes

Materials Science and Technology, 1986
Pack cementation remains a widely used technique for producing high-temperature protective coatings for gas turbine components.
R. Mévrel, C. Duret, R. Pichoir
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Evaluation of Surface Roughness of Some Biomedical Titanium Alloys by Pack Cementation Coating

, 2021
Titanium possesses a unique ability to bind with bone and living tissue, making it an ideal material for orthopedic implants such as knee and hip replacements.
Z. Ali, F. Al-Hasani
semanticscholar   +1 more source

Pack cementation diffusion coatings

1996
Pack cementation is an in situ chemical vapor deposition (CVD) batch process that has been used to produce corrosion- and wear-resistant coatings on inexpensive or otherwise inadequate substrates for over 75 years [1]. The traditional pack consists of four components: the substrate or parts to be coated; the masteralloy (i.e. a powder of the element or
Robert Bianco, Robert A. Rapp
openaire   +1 more source

Aluminum Pack Cementation on Mo–Si–B Alloys

Journal of The Electrochemical Society, 2006
The application of a pack cementation coating of aluminum on Mo-rich Mo–Si–B alloys prior to oxygen exposure yields a significant improvement in the oxidation resistance over a wide temperature range (732–1372 °C). Upon exposure to oxygen, the Mo3Al8-rich layer that forms during the aluminum pack cementation treatment develops a protective Al2O3 layer ...
R. Sakidja, F. Rioult, J. Werner, J.H. Perepezko   +3 more
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Superfine cement for improving packing density, rheology and strength of cement paste

Cement and Concrete Composites, 2012
Abstract Superfine cement is a cement ground to a much higher fineness than ordinary cement. The addition of a small quantity of superfine cement to fill into the voids of ordinary cement can improve the packing density of the cement and thereby reduce the amount of mixing water needed to fill the voids. In this study, the effects of superfine cement
Chen, JJ, Kwan, AKH
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Composite cements: synergistic effects of particle packing and pozzolanicity

Proceedings of the Institution of Civil Engineers - Engineering Sustainability, 2022
The production of cement is a carbon dioxide-intensive process. Replacing ordinary Portland cement (OPC) with industrial by-products can bring down the carbon footprint associated with cement production. Various industrial residues are currently used as alternative cementitious materials in this regard.
Vijayakumar Duraisamy, Gopinath Athira, Abdulsalam Bahurudeen, Prakash Nanthagopalan   +3 more
openaire   +1 more source

Comparing oxidation behaviors at 1773 K and 1973 K of HfB2-MoSi2/SiC-Si coating prepared by a combination method of pack cementation, slurry painting and in-situ synthesis

, 2020
HfB2-MoSi2/SiC-Si coating was fabricated via pack cementation (PC) combined with slurry painting (SP) followed by heat treatment, where MoSi2 was in-situ synthesized from Mo and Si.
Pei Zhang, Q. Fu, Chun-yu Cheng, Xiao-fei Zhu, Jinguo Huang, Jiaping Zhang, Wei Li   +6 more
semanticscholar   +1 more source

Synthesis of higher manganese silicides by pack cementation

AIP Conference Proceedings, 2019
Higher Manganese Silicides (HMS), commonly referred to as MnSi1.7, have currently attracted great attention due to their potential use in high temperature thermoelectric applications. These compounds demonstrate attractive thermoelectric properties –with a maximum value of figure of merit ZT at least 0.7 for the undoped material –good thermal and ...
Aikaterini Teknetzi, Dimitrios Stathokostopoulos, Evangelia Tarani, Adamantios Margaronis, Euripides Hatzikraniotis, Eleni Pavlidou, Konstantinos Chrissafis, George Vourlias   +7 more
openaire   +1 more source