Diffusion Processes in Low-Frequency Internal Friction of Crystalline Argon, Neon and Hydrogen

The diffusion mechanisms of lithium ions in tetragonal phase as well as in Al and Nb stabilized cubic Li7La3Zr2O12 compounds were investigated by low-frequency internal friction technique. In the cubic Li7La3Zr2O12 phase, a remarkable relaxation-type internal friction peak PC with a peak height up to 0.12 was observed in the temperature range from 15°C to 60°C. In the tetragonal phase however, the height of the PT peak dropped to 0.01. The obvious difference of the relaxation strength between the cubic and tetragonal phases is due to the different distribution of lithium ions in lattice, ordered in the tetragonal phase and disordered in the cubic phase. Based on the crystalline structure of the cubic garnet-type Li7La3Zr2O12 compound, it is suggested that the high internal friction peak in the cubic phase may be attributed to two diffusion processes of lithium ions: 96h↔96h and 96h↔24d.

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LOW FREQUENCY INTERNAL-FRICTION PEAKS AS A FUNCTION OF STRAIN AMPLITUDE IN COLD-WORKED DILUTE ALUMINIUM ALLOYS

Le Journal de Physique Colloques ◽

10.1051/jphyscol:1981545 ◽

1981 ◽

Vol 42 (C5) ◽

pp. C5-307-C5-312 ◽

Cited By ~ 2

Author(s):

T. S. Kê

Keyword(s):

Internal Friction ◽

Strain Amplitude ◽

Aluminium Alloys ◽

Low Frequency ◽

Cold Worked

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Low‐Frequency Internal Friction Peak in Stoichiometric Gold‐Zinc Alloy

Journal of Applied Physics ◽

10.1063/1.1708639 ◽

1966 ◽

Vol 37 (4) ◽

pp. 1941-1942 ◽

Cited By ~ 6

Author(s):

K. Mukherjee

Keyword(s):

Internal Friction ◽

Low Frequency ◽

Zinc Alloy ◽

Internal Friction Peak

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Low Frequency Internal Friction Study and Prediction of Microcreep Behaviour of Elinvar Alloys

Materials Transactions JIM ◽

10.2320/matertrans1989.30.46 ◽

1989 ◽

Vol 30 (1) ◽

pp. 46-54 ◽

Cited By ~ 12

Author(s):

Osamu Yoshinari ◽

Masahiro Koiwa

Keyword(s):

Internal Friction ◽

Low Frequency ◽

Friction Study

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Determination of the glass transition temperature of metallic glasses by low-frequency internal friction measurements

Journal of Non-Crystalline Solids ◽

10.1016/s0022-3093(87)80028-5 ◽

1987 ◽

Vol 93 (1) ◽

pp. 53-66 ◽

Cited By ~ 20

Author(s):

H.-R. Sinning ◽

F. Haessner

Keyword(s):

Glass Transition ◽

Transition Temperature ◽

Glass Transition Temperature ◽

Internal Friction ◽

Metallic Glasses ◽

Low Frequency ◽

Friction Measurements

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Internal Friction Study of the Rare Earth Ion Substituted Fast Oxide-Ion Conductors (La1-ΧreΧ)2Mo2O9 (Re=Nd, Gd)

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.184.110 ◽

2012 ◽

Vol 184 ◽

pp. 110-115

Author(s):

X.P. Wang ◽

J. Hu ◽

Zhong Zhuang ◽

Tao Zhang ◽

Qian Feng Fang

Keyword(s):

Phase Transition ◽

Rare Earth ◽

Internal Friction ◽

Diffusion Processes ◽

Rare Earth Ion ◽

Disorder Transition ◽

Oxide Ion Conductors ◽

Oxide Ion ◽

The Rare Earth ◽

Ion Conductors

The relaxation and phase transition behaviors of rare-earth ion substituted fast oxide-ion conductors (La1-xRex)2Mo2O9 (Re=Nd, Gd) were investigated by internal friction (IF) measurement in the temperature range 300 K - 950 K. Three different IF peaks (labeled as PL, PH, and PG, respectively) were observed in the rare-earth ion doped La2Mo2O9 samples. Peak PL corresponds to short diffusion processes of oxygen ions among different oxygen vacancy sites. Peak PH is associated with the static/dynamic disorder transition in oxygen ion distribution. Peak PG is a newly discovered peak embodying phase transition-like characteristics and is suggested to be related to order-disorder transition associated with the rearrangement of La/ Re sub-lattice.

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Effect of Heat Treatments on the Damping Characteristics of TiNi-Based Shape Memory Alloys

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.319.33 ◽

2006 ◽

Vol 319 ◽

pp. 33-38 ◽

Cited By ~ 4

Author(s):

I. Yoshida ◽

Kazuhiro Otsuka

Keyword(s):

Internal Friction ◽

Shape Memory Alloys ◽

Shape Memory ◽

Low Frequency ◽

Heat Treatments ◽

Damping Capacity ◽

Temperature Hysteresis ◽

Temperature Spectrum ◽

Two Peaks ◽

Very High

Low frequency internal friction of Ti49Ni51 binary and Ti50Ni40Cu10 ternary shape memory alloys has been measured. The effect of solution and aging heat treatments on the damping property was examined. The temperature spectrum of internal friction for TiNi binary alloy consists, in general, of two peaks; one is a transition peak which is associated with the parent-martensite transformation and is rather unstable in a sense that it strongly depends on the frequency and decreases considerably when held at a constant temperature. The other one is a very high peak of the order of 10-2, which appears at around 200K. It appears both on cooling and on heating with no temperature hysteresis, and is very stable. The behavior of the peak is strongly influenced by the heat treatments. The trial of two-stage aging with a purpose of improving the damping capacity has been proved unsatisfactory. TiNiCu has a very high damping, the highest internal friction reaching 0.2, but by quenching from very high temperature, say 1373K, the damping is remarkably lowered. For the realization of high damping the quenching from a certain temperature range around 1173K seems the most preferable condition.

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