Effect of partial replacement of V with Nb on phase transformations and mechanical properties of Ti-5553 alloy

2018 ◽  
Vol 220 ◽  
pp. 205-208 ◽  
Author(s):  
V.C. Opini ◽  
K.N. Campo ◽  
M.G. Mello ◽  
E.S.N. Lopes ◽  
R. Caram
Keyword(s):  
Mechanical Properties ◽  
Phase Transformations ◽  
Partial Replacement

scholarly journals Recent Attempts in the Design of Efficient PVC Plasticizers with Reduced Migration

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 844
Author(s):  
Joanna Czogała ◽  
Ewa Pankalla ◽  
Roman Turczyn
Keyword(s):  
Mechanical Properties ◽  
Partial Replacement ◽  
Total Replacement ◽  
Current Trends ◽  
Poly Vinyl Chloride ◽  
Wide Range ◽  
Migration Resistance ◽  
Secondary Plasticizer ◽  
New Compounds ◽  
Ethylhexyl Phthalate

This paper reviews the current trends in replacing commonly used plasticizers in poly(vinyl chloride), PVC, formulations by new compounds with reduced migration, leading to the enhancement in mechanical properties and better plasticizing efficiency. Novel plasticizers have been divided into three groups depending on the replacement strategy, i.e., total replacement, partial replacement, and internal plasticizers. Chemical and physical properties of PVC formulations containing a wide range of plasticizers have been compared, allowing observance of the improvements in polymer performance in comparison to PVC plasticized with conventionally applied bis(2-ethylhexyl) phthalate, di-n-octyl phthalate, bis(2-ethylhexyl) terephthalate and di-n-octyl terephthalate. Among a variety of newly developed plasticizers, we have indicated those presenting excellent migration resistance and advantageous mechanical properties, as well as those derived from natural sources. A separate chapter has been dedicated to the description of a synergistic effect of a mixture of two plasticizers, primary and secondary, that benefits in migration suppression when secondary plasticizer is added to PVC blend.

Physical and Mechanical Properties of Cement Paste Were Used Partially with Fly Ash and Kaolin Waste

2017 ◽  
Vol 866 ◽  
pp. 199-203
Author(s):  
Chidchanok Chainej ◽  
Suparut Narksitipan ◽  
Nittaya Jaitanong
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Room Temperature ◽  
Physical And Mechanical Properties ◽  
Partial Replacement ◽  
X Ray Diffraction ◽  
X Ray ◽  
Lime Water ◽  
Diffraction Patterns ◽  
Iron Mold

The aims of this research were study the microstructures and mechanical properties for partial replacement of cement with Fly ash (FA) and kaolin waste (KW). Ordinary Portland cement were partially replaced with FA and KW in the range of 25-35% and 10-25% by weight of cement powder. The kaolin waste was ground for 180 minutes before using. The specimen was packing into an iron mold which sample size of 5×5×5 cm3. Then, the specimens were kept at room temperature for 24 hours and were moist cured in the incubation lime water bath at age of 3 days. After that the specimens were dry cured with plastic wrap at age of 3, 7, 14 and 28 days. After that the compounds were examined by x-ray diffraction patterns (XRD) and the microstructures were examined by scanning electron microscopy (SEM). The compressive strength was then investigated.

Phase transformations in steel 1Kh12N2VMF during aging, and mechanical properties

1972 ◽  
Vol 13 (7-8) ◽  
pp. 579-582
Author(s):  
I. S. Kalashnikov ◽  
V. A. Konstantinov ◽  
M. F. Alekseenko ◽  
T. P. Kuznetsova ◽  
E. N. Masaleva
Keyword(s):  
Mechanical Properties ◽  
Phase Transformations

Effect of the use of diatomite as partial replacement of sand on thermal and mechanical properties of mortars

2021 ◽  
pp. 103038
Author(s):  
Driss Taoukil ◽  
Younes El meski ◽  
Mohammed lhassane Lahlaouti ◽  
Rabah Djedjig ◽  
Abdelmajid El bouardi
Keyword(s):  
Mechanical Properties ◽  
Partial Replacement ◽  
Thermal And Mechanical Properties

Influence of Different Mineral Precursors on the Properties of Fly Ash Based Alkali-Activated Mortars

2018 ◽  
Vol 761 ◽  
pp. 73-78 ◽  
Author(s):  
Matej Špak ◽  
Pavel Raschman
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Chemical Composition ◽  
Coal Combustion ◽  
Pure Aluminum ◽  
Partial Replacement ◽  
Black Coal ◽  
Fly Ashes ◽  
Final Composition ◽  
Alkali Activated

Alkali-activated materials based on fly ash are widely developed and also produced on the present. Some of fly ashes are not suitable for production of alkali-activated materials because of their inconvenient chemical composition. Alumina-silicates are the most important components that are needed to accomplish the successful reaction. The proper content of amorphous phase of alumina-silicates and its proportion as well should be provided for the final composition of alkali-activated materials. The influence of pure aluminum oxide powder as well as raw milled natural perlite on mechanical properties and durability of alkali-activated mortars was investigated. These minerals were used as partial replacement of fly ash coming from black coal combustion. In addition, the mortars were prepared by using different alkali activators.

Sign in / Sign up

Export Citation Format

Share Document