ASPECTS OF USAGE OF ORGANIC OR AQUEOUS BINDERS BASED ON III OR IV GROUP ELEMENTS OXIDES IN THE PRODUCTION OF CERAMIC MOLDS FOR CHEMICALLY ACTIVE ALLOYS CASTING (review)

2021 ◽  
pp. 73-84
Author(s):  
V.A. Voronov ◽  
◽  
A.S. Chaynikova ◽  
D.M. Tkalenko ◽  
◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Outer Surface ◽  
Investment Casting ◽  
Physical And Mechanical Properties ◽  
Operational Reliability ◽  
Aluminum Oxides ◽  
Heat Resistant ◽  
Defect Zone ◽  
Ceramic Casting ◽  
Cast Products

The article considers the experience of using organic and aqueous binders based on silicon or aluminum oxides in the manufacturing of ceramic casting molds, and tendencies of world manufacturers in this industry to improve the quality, accuracy and operational reliability of cast products, especially critical parts made of titanium, intermetallic and heat-resistant alloys obtained by investment casting. The paper gives information on the results of studying physical and mechanical properties of ceramic molds and defect zone of the outer surface of castings made of various alloys.

scholarly journals POLYETHERIMIDE FOR CREATION OF HEAT-RESISTANT POLYMERIC COMPOSITE MATERIALS WITH HIGH PHYSICAL AND MECHANICAL PROPERTIES

2019 ◽  
pp. 94-100
Author(s):  
А. Бородулин ◽  
A. Borodulin ◽  
А. Калинников ◽  
A. Kalinnikov ◽  
С. Музыка ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Organic Solvents ◽  
Physical And Mechanical Properties ◽  
Polymeric Composite ◽  
Heat Resistant ◽  
Fine Organic Synthesis ◽  
The Subject ◽  
The Creation ◽  
Filled Composite

Thermoplastic and soluble in organic solvents polyetherimide is of great interest for the creation of heat-resistant composite materials with high physical and mechanical properties. In recent decades, the main scientific approaches to the synthesis of polyimides with the ability to process from melt and solutions in organic solvents have been developed. According to this methodology, the glass transition temperature of rigid-chain polyimides is reduced by increasing the flexibility of the main polymer chain and/or by reducing the intermolecular interaction. Evolution of fine organic synthesis is one of the priority directions of development of chemical technology. Chemistry of high-molecular compounds is the subject of research by various domestic and foreign scientists. This interest is due to the prospects for the use of materials for industrial purposes. The polyetherimide contains various aromatic, heterocyclic and cycloaliphatic groups and systems in its chain. This article describes the main approaches to the creation of polymers with improved, compared with polyimides, technological properties and prospects for their application in the production of filled composite materials based on them. The paper presents the properties of the materials under consideration as a justification for the creation of heat-resistant composite materials.

Heat-resistant antiflaming and friction mechanisms in nano-Fe2O3-reinforced silicon rubber

2013 ◽  
Vol 20 (4) ◽  
pp. 331-335 ◽  
Author(s):  
Bin Zhao ◽  
Qilei Wang ◽  
Lin Jin
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
High Temperature ◽  
Heat Resistance ◽  
Friction Mechanisms ◽  
Raw Materials ◽  
Physical And Mechanical Properties ◽  
Maximum Elongation ◽  
Heat Resistant ◽  
Good Heat

AbstractA ferric oxide (Fe2O3)/silicone rubber (SR) composite was prepared to produce a magnetic rubber with good heat-resistant and friction properties: SR and nano-Fe2O3 were used as its raw materials. The heat-resistant, antiflaming, magnetic, and mechanical properties of such composites with different proportions of nano-Fe2O3 were studied. The results showed that the Fe2O3 nanoparticles were uniformly distributed throughout the composites. The physical and mechanical properties of SR were improved when Fe2O3 nanoparticles were added. The maximum elongation and tensile strength of the composites were relatively good when the ratio of Fe2O3 was 20 phr. The heat-resistance and antiflaming properties of SR were improved by adding nano-Fe2O3, which had good combined heat resistance. The friction properties of these composites were optimal at 20 phr addition of nano-Fe2O3, which laid the foundation for further applications of this type of composite in high-temperature sealing and shock absorption environments.

Mechanical Properties of Porous Titanium Structure Fabricated by Investment Casting with Pressurization/Depressurization System

2014 ◽  
Vol 52 (3) ◽  
pp. 203-209 ◽  
Author(s):  
San Kang ◽  
Ji Woon Lee ◽  
Soong Keun Hyun ◽  
Byong Pil Lee ◽  
Myoung Gyun Kim ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Investment Casting ◽  
Porous Titanium ◽  
Titanium Structure
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