The Influence of Silicon Oxide on the Mechanical Properties of Metaphosphate Glasses

Baikova, L. G.; Fedorov, Yu. K.; Pukh, V. P.; Tikhonova, L. V.; Kazannikova, T. P.; Sinani, A. B.; Nikitina, S. I.

doi:10.1023/b:gpac.0000045922.98699.1f

Cited by 7 publications

(8 citation statements)

References 6 publications

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“…An increase in the SiO 2 content over and above what is required in the metaphosphate composition results in the formation of shorter chains with a strong interaction between terminal groups. This circumstance encourages the formation of a more favorable structure for the distribution of applied stresses and leads to an increase in the structural strength [5].…”

Section: Resultsmentioning

confidence: 99%

“…The structural strength was measured by the method of three-point bending of fibers 100 µ m in diameter in liquid nitrogen in accordance with the procedure described in [2][3][4][5]. The use of this procedure made it possible to exclude the effect of accidental defects and water contained in the medium on the strength.…”

Section: Sample Preparation and Experimental Techniquementioning

confidence: 99%

“…The results obtained from our earlier investigations of phosphate glasses in several systems [2][3][4][5] allowed us to make the inference that changes in the structural strength of these glasses follow the general regularities revealed for other oxide systems; namely, an increase in the degree of connectivity of the anionic network of the glass leads to an increase in the structural strength [6]. For metaphosphate glasses in which the anionic network, as a rule, has a chain structure, an important additional factor affecting the structural strength is the energy of the ionic interaction between the chain structures.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical properties of phosphate glasses as a function of the total bonding energy per unit volume of glass

et al. 2008

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The dependences of the structural strength and the elastic modulus on the chemical composition of phosphate glasses are analyzed. The structural strength and the elastic modulus of phosphate glasses are determined for different types of both the modifier ion and the second glass-former (B 2 O 3 or SiO 2 ) introduced into the glass. The total bonding energy per unit volume of the glass is calculated from the data on the dissociation energy for the oxides entering into the glass composition and the data on the atomic packing density. For four systems of phosphate glasses, it is demonstrated that the Young's modulus depends linearly on the total bonding energy per unit volume of the glass. The dependence of the structural strength on the chemical composition exhibits a more complex behavior and is governed by other additional factors, such as the formation of new structural groups or the change in the structure of the anionic network of the glass.

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Section: Resultsmentioning

confidence: 99%

Section: Sample Preparation and Experimental Techniquementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mechanical properties of phosphate glasses as a function of the total bonding energy per unit volume of glass

et al. 2008

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“…Because of the substantial mechanical loads applied to phosphate glasses in any application, knowledge of their strength and fatigue behavior is important. The structure and physical/chemical properties of bulk phosphate‐based glasses have been widely studied in the past; conversely, there is little information regarding the mechanical properties of phosphate fibers compared with traditional silicate fibers . The technological applications of these glasses are clear, so better understanding of the mechanical properties of phosphate glasses could lead to further applications especially in emerging technological fields or improved glass compositions.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Phosphate Glass Optical Fibers

Mura

Milanese

Lousteau

2013

Int J of Appl Glass Sci

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In this work, step-index 40/125 lm diameter optical fibers produced from two slightly different lithium phosphate glasses were subjected to mechanical characterization. Tensile tests were carried out on fibers with gage length from 10 to 150 mm, allowing for the determination of the failure stress (ranging from %200 to 400 MPa) and the elastic modulus (60 GPa). Some tests were also performed with the fiber "immersed" in water; an important subcritical crack growth effect was pointed out, and a fatigue susceptibility parameter (n) equal to 11.4 was determined. The analysis of fracture mirror allows an estimated fracture toughness equal to 0.5 MPa m 0.5 .

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“…Fracture surface energy of various glasses estimated from their elastic modulus. [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] impact energy, the particle size differs in the particle size distribution. Therefore, the glass size reduction can only be decided by their brittleness in the particle size distribution.…”

Section: Resultsmentioning

confidence: 99%