Highly conductive graphite matrix/copper composites by a pressureless infiltration method

2021 ◽  
Vol 130 (1) ◽  
pp. 015102
Author(s):  
Wenfu Wei ◽  
Xiaobo Li ◽  
Zefeng Yang ◽  
Zhanglin Huang ◽  
Haozi Zuo ◽  
...  
2006 ◽  
Vol 522-523 ◽  
pp. 657-664 ◽  
Author(s):  
Dong Bok Lee

Metal matrix composites (MMCs) consisting of an Al matrix reinforced with initially added BN particles and newly formed AlN dispersoids were fabricated using the pressureless infiltration method. This method led to the incorporation of Mg and nitrogen into the Al matrix. In the retained BN dispersoids, the depletion of nitrogen and enrichment of Al and Mg occurred. The more Mg available, the more AlN formed in the MMCs. The oxidation resistance of the prepared MMCs at 773 and 823 K in air was not satisfactory, owing to the formation of MgO-rich scale. Mg, which was used as an infiltration enhancer precursor, oxidized preferentially, and thereby decreased the oxidation resistance of the prepared MMCs.


2014 ◽  
Vol 607 ◽  
pp. 454-459 ◽  
Author(s):  
Xiaoliang Fang ◽  
Jinxu Liu ◽  
Xing Wang ◽  
Shukui Li ◽  
Lingling Zheng

Author(s):  
A. U. Zamurayeva ◽  
Е. T. Supiyeva ◽  
B Sh. Orynbayeva

Relevance. The modern method of infiltration provides an opportunity to stop the spread of pathogenic bacteria and the development of caries at the white spot stage, replacing the destroyed enamel cells with special polymers having low viscosity and high penetrating ability. The stabilization of the process is achieved in a short time with the maximum safety of their tissues. Purpose. Treatment of initial tooth decay in children by infiltration, assessment of the effectiveness and advantages of modern technology. Materials and methods. Clinical examination was carried out according to generally accepted methods. Additionally, a laser diagnostic method was used using the KaVo DIAGNOdent device (Germany). The LLP Dentistry Center «Zhaik Dent» and the LLP «Concept» used the Icon system for the treatment of initial caries and after orthodontic treatment for 25 children with 54 teeth. Results. At the end of tooth treatment with the Icon infiltration method, parents and the child were given recommendations: from the next day, brush your teeth 2 times a day, rinse your mouth regularly after eating, do not drink drinks, products with coloring substances. To monitor the result of treatment, the child was prescribed for reexamination after 7-10 days, after one month, in the following periods – once a year.After working with the material of the Icon system, the authors noted the pronounced effects of the treatment of initial caries by the method of infiltration.Conclusions. 1. The method of infiltration is a modern and promising technology for the treatment of dental caries at an early stage without losing healthy tissues. 2. The Icon infiltration method makes it possible to stop the spread of pathogenic bacteria and develop tooth decay at the white spot stage, replacing the destroyed enamel cells with special polymers having low viscosity and high penetrating ability. 3. The stabilization of the carious process is achieved in a short time with the maximum preservation of the tooth's tissues. 


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