Chemical compatibility study of lithium titanate with Indian reduced activation ferritic martensitic steel

Sonak, Sagar; Jain, Uttam; Haldar, R.; Kumar, Sanjay

doi:10.1016/j.fusengdes.2015.07.026

Cited by 9 publications

(4 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Keisuke et al 16 investigated the corrosion behavior between the reduced activation ferriticmartensitic steel EUROFER and Li 2 TiO 3 with excess Li at different temperatures under sweeping gas of He+0.1 % H 2 , and the results show that the oxide corrosion layers of LiFe 5 O 8 , LiFeO 2 and LiCrO 2 can be seen. Sonak et al 17 studied chemical compatibility between lithium titanate and Indian reduced activation ferritic martensitic steel heated at 550 • C up to 900 h under an inert argon atmosphere, the result shows that the Li 2 TiO 3 chemically reacted with ferritic martensitic steel to form a brittle and nonadherent oxide layer. Moreover, the Li 2 TiO 3 with excess Li has good compatibility with RAFM blanket steel.…”

Section: Introductionmentioning

confidence: 99%

Study on the chemical compatibility between Li₂TiO₃ ceramic pebbles and diverse advanced structural materials

Tan

Cai

et al. 2023

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

The tritium breeder and structural materials are necessary components in the blanket to realize tritium (T) self‐sustainment of nuclear fusion. The long‐term exposure between tritium breeders and structural materials will cause surface corrosion in irradiation environments and then further affect the tritium release behavior. In this study, chemical compatibility between Li2TiO3 ceramic pebbles and advanced structural materials was studied systematically at 700 °C for 300 h under He+0.1 % H2 environment, respectively. The color of the Li2TiO3 ceramic pebbles changes from white to dark grey and black. Moreover, the grain size of Li2TiO3 ceramic pebbles increases to more than 5 μm, and the crushing load decreased slightly. For the structural materials, the Al‐rich oxide layer with about 188.7 nm of 14Cr‐5Al oxide dispersion strengthened (ODS) steel and Cr‐Fe rich oxide layer with about 1.04 μm of 14Cr‐ODS steel were observed on the cross‐section. The effective diffusion coefficient of O element in Li2TiO3 ceramic moved into ODS steel at 700 °C was calculated to be 3.3 × 10−16cm2/s and 1.02 × 10−14 cm2/s. Unfortunately, when SiC ceramics were contacted with the pebbles, the crystal phase transformed into SiO2, which severely limits its application. Therefore, these results will provide guidance for the selection of structural materials in the future.

show abstract

Section: Introductionmentioning

confidence: 99%

Study on the chemical compatibility between Li₂TiO₃ ceramic pebbles and diverse advanced structural materials

Tan

Cai

et al. 2023

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

show abstract

“…The chemical compatibility of RAFM steel with solid breeders at the operation temperatures has been studied [4][5][6][7]. Li 2 TiO 3 statically and chemically reacted with Indian RAFM steel (Fe-9.02Cr-1.46W) [4] and RAFM steel ARAA (Fe-9Cr-1.2W) [5], and formed oxide layers. Li 2+x TiO 3+x with Li 2 ZrO 3 also chemically reacted with F82H and formed oxide layers [6].…”

Section: Introductionmentioning

confidence: 99%

Effect of Temperature on Fretting Corrosion Behaviors between Li<sub>2</sub>TiO<sub>3 </sub>Pebble and F82H

MASAKI

Kondo

KIM

et al. 2022

Plasma and Fusion Research

View full text Add to dashboard Cite

Lithium titanate (Li 2 TiO 3 ) pebble is a candidate tritium breeder of solid breeder blanket systems of fusion reactors. The oscillation of coolant tubes can be induced by the coolant flow. Fretting corrosion is caused between the Li 2 TiO 3 pebbles and the coolant tubes which are made of reduced activation ferritic martensitic steel F82H. The purpose of the present study is to clarify the fretting behaviors at the temperatures of blanket conditions. The Li 2 TiO 3 pebble produced by sol-gel method was pushed onto the surface of the oscillating F82H plate in the fretting tests which were performed for 10 min in an air atmosphere up to 573 K. The fretting scars of the Li 2 TiO 3 pebble and the F82H plate were observed and analyzed by SEM/EDX and 3D laser scanning microscope. The fretting wear was mitigated at the temperatures of 373 K and 473 K due to the formation of the oxide layer, which might reduce the friction. The pebble was partially destructed by the fretting motion in the test performed at 573 K. The fretting wear of the pebble and the F82H plate was mitigated when the pebble was not fixed on the holder since the pebble could vibrate together with the oscillating plate.

show abstract

“…20,21 The Li loss by evaporation should be minimized for sufficient breeding of tritium fuel during reactor operation. Additionally, the vaporization behavior affects chemical compatibility between ceramic breeder and reduced-activation ferritic/martensitic (RAFM) steels; the Li-containing gaseous species are corrosive and form a double oxide layer on surface of the RAFM steels, [22][23][24][25] in which the growth is controlled by oxygen diffusion in the layers. 23 The Li mass loss and corrosion were critically enhanced by the increases in moisture concentrations.…”

Section: Introductionmentioning

confidence: 99%

“…It is noteworthy that mass loss by evaporation of Li-containing species at high temperatures were enhanced by the increase of Li/Ti ratio. , The Li loss by evaporation should be minimized for sufficient breeding of tritium fuel during reactor operation. Additionally, the vaporization behavior affects chemical compatibility between ceramic breeder and reduced-activation ferritic/martensitic (RAFM) steels; the Li-containing gaseous species are corrosive and form a double oxide layer on the surface of the RAFM steels, − in which the growth is controlled by oxygen diffusion in the layers . The Li mass loss and corrosion were critically enhanced by the increases in moisture concentrations. , The corrosion of the RAFM structural steel by Li 2.17 TiO 3+ y was reported to be more severe than that by Li 2 TiO 3 , but less severe than that by Li 2 O …”

Section: Introductionmentioning

confidence: 99%

Lithium Vapor Chemistry of Hyper-Stoichiometric Lithium Metatitanate Li_2.12(2)TiO_3+y

2020

View full text Add to dashboard Cite

Developing a better ceramic breeder (Li-containing oxide) is a key challenge for realizing fuel-self-sufficient fusion reactors. Ceramic breeder pebbles of hyper-stoichiometric lithium metatitanate, Li2+xTiO3+y (Li/Ti > 2), have been developed for a demonstration fusion reactor as high Li density enhances fuel tritium production. Previous studies have reported that Li loss by vaporization at high temperatures was largely enhanced by the increase in Li/Ti ratio and environmental moisture concentration. Minimizing the Li loss is a key issue for sufficient tritium breeding and reduced corrosion of structural steel. However, a suitable environmental parameter for hyper-stoichiometric Li2+xTiO3+y pebbles has not yet been determined because of unavailability of thermodynamic data. Herein, a solid/gas equilibria for Li2.12(2)TiO3+y was investigated by measuring vapor pressures using atmosphere controllable Knudsen cell high temperature mass spectrometry. The enhanced thermodynamic activities of Li and Li2O in Li2.12(2)TiO3+y in comparison with those in stoichiometric Li2TiO3 were obtained as functions of temperature and oxygen concentration. The equilibrium constants were used to achieve the optimum moisture concentration that can suppress the vapor reactions in a cylindrical breeding zone with inhomogeneous temperature distribution.Li 2.12(2) TiO 3+y L i ( g ) L i O H ( g )

show abstract

Chemical compatibility study of lithium titanate with Indian reduced activation ferritic martensitic steel

Cited by 9 publications

References 20 publications

Study on the chemical compatibility between Li₂TiO₃ ceramic pebbles and diverse advanced structural materials

Study on the chemical compatibility between Li₂TiO₃ ceramic pebbles and diverse advanced structural materials

Effect of Temperature on Fretting Corrosion Behaviors between Li<sub>2</sub>TiO<sub>3 </sub>Pebble and F82H

Lithium Vapor Chemistry of Hyper-Stoichiometric Lithium Metatitanate Li_2.12(2)TiO_3+y

Contact Info

Product

Resources

About

Chemical compatibility study of lithium titanate with Indian reduced activation ferritic martensitic steel

Cited by 9 publications

References 20 publications

Study on the chemical compatibility between Li2TiO3 ceramic pebbles and diverse advanced structural materials

Study on the chemical compatibility between Li2TiO3 ceramic pebbles and diverse advanced structural materials

Effect of Temperature on Fretting Corrosion Behaviors between Li<sub>2</sub>TiO<sub>3 </sub>Pebble and F82H

Lithium Vapor Chemistry of Hyper-Stoichiometric Lithium Metatitanate Li2.12(2)TiO3+y

Contact Info

Product

Resources

About

Study on the chemical compatibility between Li₂TiO₃ ceramic pebbles and diverse advanced structural materials

Study on the chemical compatibility between Li₂TiO₃ ceramic pebbles and diverse advanced structural materials

Lithium Vapor Chemistry of Hyper-Stoichiometric Lithium Metatitanate Li_2.12(2)TiO_3+y